diff --git a/.github/workflows/publish-pyktx.yml b/.github/workflows/publish-pyktx.yml
new file mode 100644
index 0000000000..b928c11684
--- /dev/null
+++ b/.github/workflows/publish-pyktx.yml
@@ -0,0 +1,126 @@
+# Copyright 2023 Shukant Pal
+# SPDX-License-Identifier: Apache-2.0
+
+name: Publish Python 🐍 distribution 📦 to PyPI or TestPyPI
+
+# https://github.com/pypa/gh-action-pypi-publish strongly recommends a
+# separate publishing job when building platform-specific distribution
+# packages, hence this.
+#
+# This should not be run until the release artifacts have been deployed.
+# The only way I can see to trigger this automatically is to have all
+# platform builds in a single workflow file and use on: `workflow_run`
+# so this is triggered when that workflow completes. Once all platform
+# builds are moved to GitHub Actions we can try making each platform
+# workflow reusable and making another workflow that calls each of
+# them via `uses` and use `on: workflow_run` here.
+#
+# We also have to figure out how to determine if the workflow deployed
+# to releases. Maybe can use the GitHub REST API to get an artifact
+# from the triggering workflow that is set only when deploying
+# releases. See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#using-data-from-the-triggering-workflow.
+# Alternatively maybe there is some way of querying what triggered
+# the workflow that we can test in an `if:` in the job as noted below.
+
+on:
+  workflow_dispatch:
+    inputs:
+#      repository-url:
+#        description: 'destination repository'
+#        required: true
+#        default: 'https://pypi.org'
+#        type: choice
+#        options:
+#          - https://test.pypi.org
+#          - https://pypi.org
+      test-pypi:
+        type: boolean
+        description: 'Deploy to test pypi registry'
+        required: true
+        default: false
+
+# Example to try in future.
+#  workflow_run:
+#    workflows: [KTX-Software Build All]
+#    types:
+#      - completed
+# An unknown is how to limit the trigger to when deploy is run in
+# Windows CI which is happens when that workflow is triggered by
+# a push with the tags below.
+#  push:
+#    # Trigger on push of release tags. There is no way to limit the trigger
+#    # to a specific branch. A later build step checks for the main branch.
+#    tags:
+#      - 'v[0-9]+\.[0-9]+\.[0-9]+'
+#      - 'v[0-9]+\.[0-9]+\.[0-9]+-*'
+
+jobs:
+  publish-to-pypi:
+    name:  Publish Python 🐍 distribution 📦 to PyPI
+    if: test-pypi == false
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url:  https://pypi.org/p/pyktx
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
+    # When using workflow_run it is necessary to check for successful
+    # completion of the workflow with
+    #if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    # Maybe it is possible to test for a release tag here too.
+    steps:
+      - name: Download latest release metadata
+        run: |
+           curl \
+              -H "Accept: application/vnd.github+json" \
+              -H "X-GitHub-Api-Version: 2022-11-28" \
+              -o latest.json \
+              https://api.github.com/repos/KhronosGroup/KTX-Software/releases/latest
+      - name: Filter out pyktx- assets
+        run: |
+          jq '.assets | map(select(.name | startswith("pyktx-"))) | map(.browser_download_url)' < latest.json > pyktx.json 
+      - name: Create dist directory
+        run: |
+          mkdir dist
+      - name: Download assets
+        run: |
+          cd dist; jq -c '.[]' ../pyktx.json | xargs -L 1 curl -O -J; cd..
+      - name: Publish distribution 📦 to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
+
+  publish-to-testpypi:
+    name:  Publish Python 🐍 distribution 📦 to TestPyPI
+    if: test-pypi
+    runs-on: ubuntu-latest
+    environment:
+      name: testpypi
+      url: https://pypi.org/p/pyktx
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
+    # When using workflow_run it is necessary to check for successful
+    # completion of the workflow with
+    #if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    # Maybe it is possible to test for a release tag here too.
+    steps:
+      - name: Download latest release metadata
+        run: |
+           curl \
+              -H "Accept: application/vnd.github+json" \
+              -H "X-GitHub-Api-Version: 2022-11-28" \
+              -o latest.json \
+              https://api.github.com/repos/KhronosGroup/KTX-Software/releases/latest
+      - name: Filter out pyktx- assets
+        run: |
+          jq '.assets | map(select(.name | startswith("pyktx-"))) | map(.browser_download_url)' < latest.json > pyktx.json 
+      - name: Create dist directory
+        run: |
+          mkdir dist
+      - name: Download assets
+        run: |
+          cd dist; jq -c '.[]' ../pyktx.json | xargs -L 1 curl -O -J; cd..
+      - name: Publish distribution 📦 to TestPyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
deleted file mode 100644
index dffb146955..0000000000
--- a/.github/workflows/publish.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-# Copyright 2023 Shukant Pal
-# SPDX-License-Identifier: Apache-2.0
-name: Publish to PyPI
-
-on:
-  workflow_dispatch:
-  push:
-    # Trigger on push of release tags. There is no way to limit the trigger
-    # to a specific branch. A later build step checks for the main branch.
-    tags:
-      - 'v[0-9]+\.[0-9]+\.[0-9]+'
-      - 'v[0-9]+\.[0-9]+\.[0-9]+-*'
-
-jobs:
-  pypi:
-    runs-on: ubuntu-latest
-    if: endsWith(github.event.base_ref, 'main')
-    steps:
-      - name: Download latest release metadata
-        run: |
-           curl \
-              -H "Accept: application/vnd.github+json" \
-              -H "X-GitHub-Api-Version: 2022-11-28" \
-              -o latest.json \
-              https://api.github.com/repos/KhronosGroup/KTX-Software/releases/latest
-      - name: Filter out pyktx- assets
-        run: |
-          jq '.assets | map(select(.name | startswith("pyktx-"))) | map(.browser_download_url)' < latest.json > pyktx.json 
-      - name: Create dist directory
-        run: |
-          mkdir dist
-      - name: Download assets
-        run: |
-          cd dist; jq -c '.[]' ../pyktx.json | xargs -L 1 curl -O -J; cd..
-      - name: Publish distribution 📦 to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
-        with:
-          password: ${{ secrets.PYPI_API_TOKEN }}
\ No newline at end of file
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index c942ccb527..c3c09359ed 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -225,7 +225,7 @@ jobs:
       # is spawned from some parent Powershell so it does not pick up
       # the changes from the registry. Use Chocolatey's helper to
       # pull in the changes.
-      #   After import `refreshenv` is an alias for
+      #   After import, `refreshenv` is an alias for
       # Update-SessionEnvironment. Without the import refreshenv will end
       # up calling the cmd.exe version, which won't help Powershell, and
       # Update-SessionEnvironment will not exist.
@@ -263,18 +263,20 @@ jobs:
         path: ${{env.BUILD_DIR}}/KTX-Software-*.exe*
 
     - name: Upload pyktx artifacts
-      if: matrix.options.package == 'YES' && matrix.options.py
+      if: matrix.options.package == 'YES' && matrix.options.py == 'ON'
       uses: kittaakos/upload-artifact-as-is@v0
       with:
         path: ${{env.BUILD_DIR}}/interface/python_binding/dist/
 
-    - name: Upload To Release
+    - name: Upload to Release
       uses: softprops/action-gh-release@v1
       if: matrix.options.package == 'YES' && matrix.toolset == 'CLangCL' && github.event_name == 'push' && github.ref_type == 'tag'
       with:
         draft: true
         prerelease: true
-        files: ${{env.BUILD_DIR}}/KTX-Software-*.exe*
+        files: |
+            ${{env.BUILD_DIR}}/KTX-Software-*.exe*
+            ${{env.BUILD_DIR}}/interface/python_binding/dist/pyktx-*
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
diff --git a/.gitignore b/.gitignore
index ff627cae65..e26a0c5b00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,3 +56,6 @@ cmake-build-*
 # Temps used for Windows signing on CI
 appveyor-tools
 the_khronos_group_inc.p12
+
+# Place for random developer test files.
+/testground/
diff --git a/.travis.yml b/.travis.yml
index 3f9ef3e425..04d5073d2a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -396,11 +396,25 @@ deploy:
 
   - provider: script
     edge: true
-    script: ruby ci_scripts/github_release.rb -s ${GITHUB_TOKEN} -r ${TRAVIS_REPO_SLUG} -c $REL_DESC_FILE -t ${TRAVIS_TAG} --overwrite true --draft true --prerelease true $BUILD_DIR/KTX-Software-*-* $BUILD_DIR/interface/python_binding/dist/*.whl
+    # nullglob is to force a null string when there are no *.whl files.
+    script: ruby ci_scripts/github_release.rb -s ${GITHUB_TOKEN} -r ${TRAVIS_REPO_SLUG} -c $REL_DESC_FILE -t ${TRAVIS_TAG} --overwrite true --draft true --prerelease true $BUILD_DIR/KTX-Software-*-*
     on:
       tags: true
       #branch: master
       condition: $PACKAGE = "YES" && $TRAVIS_TAG =~ ^v[0-9].*
+
+  # Separate deploy for pyktx because the linux runners use sh not bash
+  # for the "script" so `shopt -s nullglob; ci_scripts/github_release.rb ...`
+  # does not work to avoid passing `.../*.whl` to github_release when
+  # FEATURE_PY not ON.
+  - provider: script
+    edge: true
+    script: ruby ci_scripts/github_release.rb -s ${GITHUB_TOKEN} -r ${TRAVIS_REPO_SLUG} -c $REL_DESC_FILE -t ${TRAVIS_TAG} --overwrite true --draft true --prerelease true $BUILD_DIR/interface/python_binding/dist/*.whl
+    on:
+      tags: true
+      #branch: master
+      condition: $PACKAGE = "YES" && $TRAVIS_TAG =~ ^v[0-9].* && $FEATURE_PY = "ON"
+
 # ---------------------------------------------------------
 
 # vim:ai:ts=4:sts=2:sw=2:expandtab
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 454c0f04b3..4c17d9cb34 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -877,6 +877,7 @@ if(EMSCRIPTEN)
         "SHELL:-s EXPORT_NAME=LIBKTX"
         "SHELL:-s EXPORTED_RUNTIME_METHODS=[\'GL\']"
         "SHELL:-s GL_PREINITIALIZED_CONTEXT=1"
+        "SHELL:-s GL_ENABLE_GET_PROC_ADDRESS=1" # For Emscripten 3.1.51+
     )
     set_target_properties( ktx_js PROPERTIES OUTPUT_NAME "libktx")
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index f5183971c2..e78257b2db 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -2,8 +2,9 @@
 <!-- SPDX-License-Identifier: Apache-2.0 -->
 Release Notes
 =============
-## Version 4.3.0-alpha3
-### New Features
+## Version 4.3.0-beta1
+### New Features in Version 4.3.0
+#### Command Line Tools Suite
 
 v4.3.0 contains a new suite of command line tools accessed via an umbrella `ktx` command.
 
@@ -11,20 +12,21 @@ v4.3.0 contains a new suite of command line tools accessed via an umbrella `ktx`
 | :--- | ----------- | ------------------- |
 | `ktx create` | Create a KTX2 file from various input files | `toktx` |
 | `ktx extract` | Export selected images from a KTX2 file | - |
-| `ktx encode` | Encode a KTX2 file | `ktxsc` |
+| `ktx encode` | Encode a KTX2 file to a Basis Universal format | `ktxsc` |
 | `ktx transcode` | Transcode a KTX2 file | - |
 | `ktx info` | Prints information about a KTX2 file | `ktxinfo` |
 | `ktx validate` | Validate a KTX2 file | `ktx2check` |
 | `ktx help` | Display help information about the ktx tools | - |
 
-Equivalent old tools will be removed in the next release.
+Equivalent old tools will be removed in a subsequent release soon.
 
 Some features of the old tools are not currently available in the new equivalent.
 
 | Old Tool | New Tool | Missing Features |
 | :------: | :------: | ---------------- |
-| `toktx`  | `create` | JPEG and NBPM input and scaling/resizing. |
-| `ktxsc`  | `encode` | ASTC encoding. This can be done in `create`. |
+| `toktx`  | `create` | JPEG and NBPM input and scaling/resizing of input images. |
+| `ktxsc`  | `encode` | ASTC encoding of a KTX2 file. This can be done in `create`. <br>Deflation of a KTX2 file with zlib or zstd.|
+
 
 The command-line syntax and semantics differ from the old tools including, but not limited to:
 
@@ -43,12 +45,17 @@ The command-line syntax and semantics differ from the old tools including, but n
 
 Please refer to the manual pages or use the `--help` command-line option for further details on the options available and associated semantics for each individual command.
 
+#### Python Binding
+A Python binding for `libktx` has been added. Applications written in Python can now use `libktx` functions. Huge thanks to @ShukantPal. Please download the appropriate `pyktx` package from Releases as publishing to PyPI is not yet established.
+
 ### Changes
 
 * `libktx` has been made much more robust to errors KTX files.
-
 * `libktx` now validates checksums when present in a Zstd data stream.
 * `libktx` has two new error codes it can return: `KTX_DECOMPRESS_LENGTH_ERROR` and `KTX_DECOMPRESS_CHECKSUM_ERROR`.
+* All tools and `libktx` now correctly process on all platforms utf8 file names
+with multi-byte code-points. Previously such names did not work on Windows.
+* The Vulkan texture uploader can now optionally be used with an extenal memory allocator such as [VulkanMemoryAllocator](https://gpuopen.com/vulkan-memory-allocator/).
 
 ### Known Issues
 
@@ -63,6 +70,89 @@ Please refer to the manual pages or use the `--help` command-line option for fur
 * Neither the Vulkan nor GL loaders support depth/stencil textures.
 
 
+### Changes since v4.3.0-alpha3 (by part)
+### libktx
+
+* git subrepo push lib/dfdutils (ab9c27707) (@MarkCallow)
+
+* Reenable build of loadtest apps on Windows arm64 CI (#802) (6c131f75f) (@MarkCallow)
+
+* Utf-8/unicode support in legacy tools and lib. (#800) (1c5dc9cf6) (@MarkCallow)
+
+* Do not redefine NOMINMAX (#801) (6dbb24643) (@corporateshark)
+
+* libktx: update ktxTexture2\_setImageFromStream to allow setting the entire level's data in one call (#794) (88fc7a6e9) (@AlexRouSg)
+
+* Update dfdutils-included vulkan\_core.h. (#783) (9c223d950) (@MarkCallow)
+
+* Support for A8 and A1B5G5R5 formats (#785) (eeac6206c) (@aqnuep)
+
+* Major non-content documentation fixes. (#773) (e6a6a3be9) (@MarkCallow)
+
+* Fix vendor-specific/tied memory property flag detection (#771) (a10021758) (@toomuchvoltage)
+
+* Return KTX\_NOT\_FOUND when a GPU proc is not found. (#770) (aeca5e695) (@MarkCallow)
+
+* Support for external allocators: (#748) (6856fdb0d) (@toomuchvoltage)
+
+* Fix ktx\_strncasecmp (#741) (1ae04f897) (@VaderY)
+
+* Use correct counter for indexing sample. (#739) (3153e94e8) (@MarkCallow)
+
+### Tools
+
+* Disallow ASTC options when format is not ASTC (#809) (d3ef5ed8b) (@aqnuep)
+
+* Remove unnecessary nullptr checks. (#807) (072a4eb25) (@MarkCallow)
+
+* Set tools and tests rpath on Linux. (#804) (928612a71) (@MarkCallow)
+
+* Utf-8/unicode support in legacy tools and lib. (#800) (1c5dc9cf6) (@MarkCallow)
+
+* Support building of loadtest apps with locally installed dependencies (#799) (84ee59dd2) (@MarkCallow)
+
+* Update dfdutils-included vulkan\_core.h. (#783) (9c223d950) (@MarkCallow)
+
+* Add UTF-8 filename support on Windows to ktxtools (#788) (7b6eab5dc) (@aqnuep)
+
+* Support for A8 and A1B5G5R5 formats (#785) (eeac6206c) (@aqnuep)
+
+* KTXwriterScParams support (#779) (f8691ff05) (@aqnuep)
+
+* Use \-- in doc. to get -- not n-dash in output. (#767) (724790094) (@MarkCallow)
+
+* Document convert\_primaries option in toktx. (#765) (3049f5b5e) (@MarkCallow)
+
+* Do target\_type changes only in toktx (#757) (2cf053c19) (@MarkCallow)
+
+* Add support for fewer components in input files (#755) (adcccf152) (@aqnuep)
+
+* Fix --convert-primaries (#753) (e437ec45f) (@aqnuep)
+
+* Fix legacy app input from pipes on Windows. (#749) (3e7fd0af6) (@MarkCallow)
+
+* Improve output determinism and add internal ktxdiff tool for comparing test outputs (#745) (7f67af7e0) (@VaderY)
+
+* Add KTX\_WERROR config option (#746) (dab32db90) (@MarkCallow)
+
+* Fix incorrect index calculations in image conversions (#735) (682f456de) (@VaderY)
+
+* Color-space and documentation related improvements for ktx create (#732) (8b12216f7) (@VaderY)
+
+
+
+
+
+### Java Wrapper
+
+* Update dfdutils-included vulkan\_core.h. (#783) (9c223d950) (@MarkCallow)
+
+
+
+
+## Version 4.3.0-alpha3
+
+
 ### Changes since v4.3.0-alpha2 (by part)
 ### libktx
 
diff --git a/cmake/version.cmake b/cmake/version.cmake
index f9f20015ed..859fd0e43d 100644
--- a/cmake/version.cmake
+++ b/cmake/version.cmake
@@ -197,7 +197,7 @@ function( create_version_header dest_path target )
 endfunction()
 
 function( create_version_file )
-    file(WRITE ${PROJECT_BINARY_DIR}/ktx.version "${KTX_VERSION}")
+    file(WRITE ${PROJECT_BINARY_DIR}/ktx.version "${KTX_VERSION_FULL}")
 endfunction()
 
 # vim:ai:ts=4:sts=4:sw=2:expandtab:textwidth=70
diff --git a/interface/python_binding/CMakeLists.txt b/interface/python_binding/CMakeLists.txt
index 85d5edf110..b2c4051434 100644
--- a/interface/python_binding/CMakeLists.txt
+++ b/interface/python_binding/CMakeLists.txt
@@ -2,8 +2,9 @@
 # SPDX-License-Identifier: Apache-2.0
 
 find_package (Python3 COMPONENTS Interpreter)
-file(GLOB pyktx_py_src ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx/*.py)
-list(TRANSFORM pyktx_py_src REPLACE "${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx/" "${KTX_BUILD_DIR}/interface/python_binding/docs/pyktx." OUTPUT_VARIABLE pyktx_py_rst_filenames)
+set(SOURCE_DIR ${CMAKE_SOURCE_DIR}/interface/python_binding)
+file(GLOB pyktx_py_src ${SOURCE_DIR}/pyktx/*.py)
+list(TRANSFORM pyktx_py_src REPLACE "${SOURCE_DIR}/pyktx/" "${KTX_BUILD_DIR}/interface/python_binding/docs/pyktx." OUTPUT_VARIABLE pyktx_py_rst_filenames)
 list(TRANSFORM pyktx_py_rst_filenames REPLACE ".py$" ".rst" OUTPUT_VARIABLE pyktx_py_rst)
 
 set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
@@ -28,7 +29,7 @@ add_custom_target( pyktx-deps ALL
 add_custom_command(
     TARGET pyktx-deps
     COMMAND
-        ${PYTHON_EXECUTABLE} -m pip install --no-warn-script-location -r ${CMAKE_SOURCE_DIR}/interface/python_binding/requirements.txt
+        ${PYTHON_EXECUTABLE} -m pip install --no-warn-script-location -r ${SOURCE_DIR}/requirements.txt
     COMMENT
         "Install dependencies for pyktx build"
 )
@@ -37,7 +38,7 @@ add_custom_target( pyktx ALL
     DEPENDS
         ktx
     WORKING_DIRECTORY
-        ${CMAKE_SOURCE_DIR}/interface/python_binding
+        ${SOURCE_DIR}
     COMMENT
         "Python distributions"
 )
@@ -51,15 +52,29 @@ add_custom_command(
     COMMENT
         "Clean up pyktx build artifacts"
     WORKING_DIRECTORY
-        ${CMAKE_SOURCE_DIR}/interface/python_binding
+        ${SOURCE_DIR}
 )
 
+# Normalize version number as the python toolchain does. Tweaks are reduced
+# to a, b or rc immediately following the patch number. We do because names
+# of the BYPRODUCTS in the following custom_command need to match the
+# names with normalized version numbers the python tools would produce.
+function(normalize_version _var fullver)
+    string(REPLACE -alpha a normalized ${fullver})
+    string(REPLACE -beta b normalized ${normalized})
+    set(${_var} "${normalized}" PARENT_SCOPE)
+endfunction()
+
+normalize_version(KTX_VERSION_NORMALIZED ${KTX_VERSION_FULL})
+set(DIST_DIR ${KTX_BUILD_DIR}/interface/python_binding/dist)
+set(SOURCE_ARCHIVE_BASENAME ${DIST_DIR}/pyktx-${KTX_VERSION_NORMALIZED})
+
 add_custom_command(
     TARGET
         pyktx
     BYPRODUCTS
-        ${KTX_BUILD_DIR}/interface/python_binding/dist/pyktx-${KTX_VERSION}.tar.gz
-        ${KTX_BUILD_DIR}/interface/python_binding/dist/pyktx-${KTX_VERSION}.zip
+        ${SOURCE_ARCHIVE_BASENAME}.tar.gz
+        ${SOURCE_ARCHIVE_BASENAME}.zip
     DEPENDS
         ${pyktx_py_src}
         pyktx/ktx_texture.h
@@ -72,10 +87,10 @@ add_custom_command(
         ${CMAKE_COMMAND} -E env
             LIBKTX_INCLUDE_DIR=${CMAKE_SOURCE_DIR}/include
             LIBKTX_LIB_DIR=${LIBKTX_LIB_DIR}
-            LIBKTX_VERSION=${PROJECT_VERSION}
-        ${PYTHON_EXECUTABLE} -m build --sdist --outdir ${KTX_BUILD_DIR}/interface/python_binding/dist
+            LIBKTX_VERSION=${KTX_VERSION_NORMALIZED}
+        ${PYTHON_EXECUTABLE} -m build --sdist --outdir ${DIST_DIR}
     WORKING_DIRECTORY
-        ${CMAKE_SOURCE_DIR}/interface/python_binding
+        ${SOURCE_DIR}
 )
 
 add_custom_command(
@@ -87,18 +102,18 @@ add_custom_command(
         ${CMAKE_COMMAND} -E env
             LIBKTX_INCLUDE_DIR=${CMAKE_SOURCE_DIR}/include
             LIBKTX_LIB_DIR=${LIBKTX_LIB_DIR}
-            LIBKTX_VERSION=${PROJECT_VERSION}
-        ${PYTHON_EXECUTABLE} -m build --wheel --outdir ${KTX_BUILD_DIR}/interface/python_binding/dist
+            LIBKTX_VERSION=${KTX_VERSION_NORMALIZED}
+        ${PYTHON_EXECUTABLE} -m build --wheel --outdir ${DIST_DIR}
     WORKING_DIRECTORY
-        ${CMAKE_SOURCE_DIR}/interface/python_binding
+        ${SOURCE_DIR}
 )
 
 set(pyktx_egg_info
-    ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx.egg-info/dependency_links.txt
-    ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx.egg-info/PKG-INFO
-    ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx.egg-info/requires.txt
-    ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx.egg-info/SOURCES.txt
-    ${CMAKE_SOURCE_DIR}/interface/python_binding/pyktx.egg-info/top_level.txt)
+    ${SOURCE_DIR}/pyktx.egg-info/dependency_links.txt
+    ${SOURCE_DIR}/pyktx.egg-info/PKG-INFO
+    ${SOURCE_DIR}/pyktx.egg-info/requires.txt
+    ${SOURCE_DIR}/pyktx.egg-info/SOURCES.txt
+    ${SOURCE_DIR}/pyktx.egg-info/top_level.txt)
 
 add_test(NAME pyktx
     COMMAND
@@ -110,7 +125,7 @@ add_test(NAME pyktx
             LD_LIBRARY_PATH=${LIBKTX_LIB_DIR}:$ENV{LD_LIBRARY_PATH}
         ${PYTHON_EXECUTABLE} buildscript.py
     WORKING_DIRECTORY
-        ${CMAKE_SOURCE_DIR}/interface/python_binding
+        ${SOURCE_DIR}
 )
 
 if(KTX_FEATURE_DOC)
@@ -152,6 +167,6 @@ if(KTX_FEATURE_DOC)
                 SPHINXBUILD=${PYTHON_PATH}\ -m\ sphinx
             make SOURCEDIR="${KTX_BUILD_DIR}/interface/python_binding" BUILDDIR="${KTX_BUILD_DIR}/interface/python_binding/docs/html/pyktx" html
         WORKING_DIRECTORY
-            ${CMAKE_SOURCE_DIR}/interface/python_binding
+            ${SOURCE_DIR}
     )
-endif()
\ No newline at end of file
+endif()
diff --git a/interface/python_binding/README.md b/interface/python_binding/README.md
index a0b931b2ce..f3006142f7 100644
--- a/interface/python_binding/README.md
+++ b/interface/python_binding/README.md
@@ -31,5 +31,5 @@ If you are on a POSIX system (macOS or Linux), make sure libktx is on your `DYLD
 > ```
 > ld: warning: ignoring file '/usr/local/lib/libktx.4.3.0.dylib': found architecture 'arm64', required architecture 'x86_64'
 > ```
-> 
-> 'arm64' and 'x86_64' may be reversed depending on the build machine architecture. This happens because libktx is not a universal binary so only supports the current platform architecture. The message can be ignored.
\ No newline at end of file
+>
+> 'arm64' and 'x86_64' may be reversed depending on the build machine architecture. This happens because libktx is not a universal binary so only supports the current platform architecture. The message can be ignored.
diff --git a/interface/python_binding/buildscript.py b/interface/python_binding/buildscript.py
index 9b7c8e29e3..fb823a0952 100644
--- a/interface/python_binding/buildscript.py
+++ b/interface/python_binding/buildscript.py
@@ -34,7 +34,7 @@
 ffibuilder.cdef(
     """
     void free(void *ptr);
-    
+
     typedef struct ktxTexture ktxTexture;
     typedef struct ktxTextureCreateInfo ktxTextureCreateInfo;
     typedef struct ktxTexture1 ktxTexture1;
@@ -45,13 +45,13 @@
         uint32_t error;
         ktxTexture* texture;
     } ktxTextureMixed;
-    
+
     typedef struct {
         void *bytes;
         size_t size;
         int error;
     } ktxWriteToMemory;
-    
+
     typedef struct {
         size_t offset;
         int error;
@@ -80,7 +80,7 @@
     int ktxHashList_AddKVPair(ktxHashList *, const char *key, unsigned int valueLen, const void *value);
     int ktxHashList_DeleteKVPair(ktxHashList *, const char *key);
     ktxHashListEntry *ktxHashList_Next(void *entry);
-    
+
     // Glue code
     ktxTextureMixed PY_ktxTexture_CreateFromNamedFile(const char* const filename,
                                                       uint32_t create_flags);
diff --git a/interface/python_binding/pyktx/ktx_astc_params.py b/interface/python_binding/pyktx/ktx_astc_params.py
index 46c760a2dd..fef0a98fb3 100644
--- a/interface/python_binding/pyktx/ktx_astc_params.py
+++ b/interface/python_binding/pyktx/ktx_astc_params.py
@@ -25,7 +25,7 @@ class KtxAstcParams:
 
     mode: KtxPackAstcEncoderMode = KtxPackAstcEncoderMode.DEFAULT
     """Can be {ldr/hdr} from astcenc"""
-    
+
     quality_level: int = KtxPackAstcQualityLevels.FASTEST
     """astcenc supports -fastest, -fast, -medium, -thorough, -exhaustive"""
 
@@ -41,16 +41,16 @@ class KtxAstcParams:
     perceptual: bool = False
     """
     The codec should optimize for perceptual error, instead of direct RMS error.
-    
+
     This aims to improves perceived image quality, but
     typically lowers the measured PSNR score. Perceptual methods are
     currently only available for normal maps and RGB color data.
     """
-    
+
     input_swizzle: bytes = bytes([0, 0, 0, 0])
     """
     A swizzle to provide as input to astcenc.
-    
+
     It must match the regular expression /^[rgba01]{4}$/.
     """
 
diff --git a/interface/python_binding/pyktx/ktx_basis_params.py b/interface/python_binding/pyktx/ktx_basis_params.py
index 64e1fe4f43..1a883f90c8 100644
--- a/interface/python_binding/pyktx/ktx_basis_params.py
+++ b/interface/python_binding/pyktx/ktx_basis_params.py
@@ -23,8 +23,8 @@ class KtxBasisParams:
 
     compression_level: int = 0
     """
-    Encoding speed vs. quality tradeoff. Range is [0,5]. 
-    
+    Encoding speed vs. quality tradeoff. Range is [0,5].
+
     Higher values are slower, but give higher quality. There is no default.
     Callers must explicitly set this value. Callers can use
     KTX_ETC1S_DEFAULT_COMPRESSION_LEVEL as a default value. Currently this is 2.
@@ -35,13 +35,13 @@ class KtxBasisParams:
     Compression quality. Range is [1,255].
 
     Lower gives better compression/lower quality/faster.
-    Higher gives less compression/higher quality/slower. 
+    Higher gives less compression/higher quality/slower.
     This automatically determines values for max_endpoints, max_selectors,
     endpoint_rdo_threshold, and selector_rdo_threshold for the target quality
     level. Setting these parameters overrides the values determined by quality_level
     which defaults to 128 if neither it nor both of max_endpoints and max_selectors
     have been set.
-    
+
     Both of max_endpoints and max_selectors must be set for them to have any effect.
     quality_level will only determine values for endpoint_rdo_threshold and selector_rdo_threshold
     when its value exceeds 128, otherwise their defaults will be used.
@@ -58,7 +58,7 @@ class KtxBasisParams:
     endpoint_rdo_threshold: int = 0
     """
     Set endpoint RDO quality threshold. The default is 1.25.
-    
+
     Lower is higher quality but less quality per output bit (try [1.0,3.0].
     This will override the value chosen by quality_level.
     """
@@ -66,15 +66,15 @@ class KtxBasisParams:
     max_selectors: int = 0
     """
     Manually set the max number of color selector clusters. Range is [1,16128].
-    
+
     Default is 0, unset. If this is set, max_endpoints must also be set, otherwise
     the value will be ignored.
     """
-    
+
     selector_rdo_threshold: int = 0
     """
     Set selector RDO quality threshold. The default is 1.5.
-    
+
     Lower is higher quality but less quality per output bit (try [1.0,3.0]).
     This will override the value chosen by @c qualityLevel.
     """
@@ -82,7 +82,7 @@ class KtxBasisParams:
     input_swizzle: bytes = bytes(4)
     """
     A swizzle to apply before encoding.
-    
+
     It must match the regular expression /^[rgba01]{4}$/. If both this and
     pre_swizzle are specified KtxTexture2.compressBasis() will raise INVALID_OPERATION.
     """
@@ -98,7 +98,7 @@ class KtxBasisParams:
     pre_swizzle: bool = False
     """
     If the texture has swizzle metadata, apply it before compressing.
-    
+
     Swizzling, like rabb may yield drastically different error metrics
     if done after supercompression.
     """
@@ -106,7 +106,7 @@ class KtxBasisParams:
     separate_rg_to_rgb_a: bool = False
     """
     This was and is a no-op.
-    
+
     2-component inputs have always been automatically separated
     using an "rrrg" input_swizzle.
     """
@@ -114,21 +114,21 @@ class KtxBasisParams:
     no_endpoint_rdo: bool = False
     """
     Disable endpoint rate distortion optimizations.
-    
+
     Slightly faster, less noisy output, but lower quality per output bit.
     """
 
     no_selector_rdo: bool = False
     """
     Disable selector rate distortion optimizations.
-    
+
     Slightly faster, less noisy output, but lower quality per output bit.
     """
 
     uastc_flags: int = KtxPackUastcFlagBits.FASTEST
     """
     A set of KtxPackUastcFlagBits controlling UASTC encoding.
-    
+
     The most important value is the level given in the
     least-significant 4 bits which selects a speed vs quality tradeoff.
     """
@@ -139,7 +139,7 @@ class KtxBasisParams:
     uastc_rdo_quality_scalar: float = 0.
     """
     UASTC RDO quality scalar (lambda).
-    
+
     Lower values yield higher quality/larger LZ compressed files, higher
     values yield lower quality/smaller LZ compressed files. A good range to
     try is [.2,4]. Full range is [.001,50.0]. Default is 1.0.
@@ -169,4 +169,4 @@ class KtxBasisParams:
     """Do not favor simpler UASTC modes in RDO mode."""
 
     uastc_rdo_no_multithreading: bool = False
-    """Disable RDO multithreading (slightly higher compression, deterministic)."""
\ No newline at end of file
+    """Disable RDO multithreading (slightly higher compression, deterministic)."""
diff --git a/interface/python_binding/pyktx/ktx_error_code.py b/interface/python_binding/pyktx/ktx_error_code.py
index a9d340afce..d70c9fc54e 100644
--- a/interface/python_binding/pyktx/ktx_error_code.py
+++ b/interface/python_binding/pyktx/ktx_error_code.py
@@ -45,7 +45,7 @@ class KtxErrorCode(IntEnum):
 
     NOT_FOUND = 12
     """Requested key was not found"""
-    
+
     OUT_OF_MEMORY = 13
     """Not enough memory to complete the operation."""
 
diff --git a/interface/python_binding/pyktx/ktx_pack_astc_encoder_mode.py b/interface/python_binding/pyktx/ktx_pack_astc_encoder_mode.py
index c3435d6064..e306a6c154 100644
--- a/interface/python_binding/pyktx/ktx_pack_astc_encoder_mode.py
+++ b/interface/python_binding/pyktx/ktx_pack_astc_encoder_mode.py
@@ -7,7 +7,7 @@
 class KtxPackAstcEncoderMode(IntEnum):
     """
     Options specifying ASTC encoder profile mode.
-    
+
     This and function is used later to derive the profile.
     """
 
diff --git a/interface/python_binding/pyktx/ktx_pack_uastc_flag_bits.py b/interface/python_binding/pyktx/ktx_pack_uastc_flag_bits.py
index ceea6bea5f..971b8c14c9 100644
--- a/interface/python_binding/pyktx/ktx_pack_uastc_flag_bits.py
+++ b/interface/python_binding/pyktx/ktx_pack_uastc_flag_bits.py
@@ -30,7 +30,7 @@ class KtxPackUastcFlagBits(IntEnum):
 
     FAVOR_UASTC_ERROR = 8
     """Optimize for lowest UASTC error."""
-    
+
     FAVOR_BC7_ERROR = 16
     """Optimize for lowest BC7 error."""
 
diff --git a/interface/python_binding/pyktx/ktx_texture.py b/interface/python_binding/pyktx/ktx_texture.py
index 8b531ae142..2da6b15c52 100644
--- a/interface/python_binding/pyktx/ktx_texture.py
+++ b/interface/python_binding/pyktx/ktx_texture.py
@@ -107,7 +107,7 @@ def element_size(self) -> int:
     def kv_data_raw(self) -> Optional[c_buffer]:
         """
         The raw KV data buffer.
-        
+
         This is available only if RAW_KVDATA_BIT was used in create-flag bits.
         """
 
@@ -150,7 +150,7 @@ def row_pitch(self, level: int) -> int:
         if necessary. For all currently known compressed formats padding will
         not be necessary.
         """
-        
+
         return lib.ktxTexture_GetRowPitch(self._ptr, level)
 
     def image_size(self, level: int) -> int:
diff --git a/interface/python_binding/pyktx/ktx_texture1.py b/interface/python_binding/pyktx/ktx_texture1.py
index e3182c918c..51f8de91e4 100644
--- a/interface/python_binding/pyktx/ktx_texture1.py
+++ b/interface/python_binding/pyktx/ktx_texture1.py
@@ -56,7 +56,7 @@ def create_from_named_file(filename: str, create_flags: int = KtxTextureCreateFl
     def gl_format(self) -> int:
         """
         Format of the texture data, e.g. GL_RGB.
-        
+
         You can find all OpenGL formats here: <https://registry.khronos.org/OpenGL/api/GL/glcorearb.h>
         """
         return lib.PY_ktxTexture1_get_glFormat(self._ptr)
@@ -85,7 +85,7 @@ def gl_baseinternalformat(self) -> int:
     def gl_type(self) -> int:
         """
         Type of the texture data, e.g, GL_UNSIGNED_BYTE.
-        
+
         You can find all OpenGL data types here: <https://registry.khronos.org/OpenGL/api/GL/glcorearb.h>
         """
         return lib.PY_ktxTexture1_get_glType(self._ptr)
diff --git a/interface/python_binding/pyktx/ktx_texture2.py b/interface/python_binding/pyktx/ktx_texture2.py
index 2619d16a00..c2a6760c00 100644
--- a/interface/python_binding/pyktx/ktx_texture2.py
+++ b/interface/python_binding/pyktx/ktx_texture2.py
@@ -91,7 +91,7 @@ def needs_transcoding(self) -> bool:
     def compress_astc(self, params: Union[int, KtxAstcParams]) -> None:
         """
         Encode and compress a ktx texture with uncompressed images to ASTC.
-        
+
         The images are either encoded to ASTC block-compressed format. The
         encoded images replace the original images and the texture's fields
         including the dfd are modified to reflect the new state.
@@ -197,7 +197,7 @@ def transcode_basis(self, output_format: KtxTranscodeFmt, transcode_flags: int =
         PVRTC2_4_RGB, PVRTC2_4_RGBA, ASTC_4x4_RGBA, ETC2_EAC_R11, ETC2_EAC_RG11, ETC and BC1_OR_3.
 
         ETC automatically selects between ETC1_RGB and ETC2_RGBA according to whether an alpha
-        channel is available. BC1_OR_3 does likewise between BC1_RGB and BC3_RGBA. Note that if 
+        channel is available. BC1_OR_3 does likewise between BC1_RGB and BC3_RGBA. Note that if
         PVRTC1_4_RGBA or PVRTC2_4_RGBA is specified and there is no alpha channel PVRTC1_4_RGB
         or PVRTC2_4_RGB respectively will be selected.
 
diff --git a/lib/libktx_mainpage.md b/lib/libktx_mainpage.md
index 135104ad10..3e37f01597 100644
--- a/lib/libktx_mainpage.md
+++ b/lib/libktx_mainpage.md
@@ -86,7 +86,7 @@ result = ktxTexture_CreateFromNamedFile("mytex3d.ktx",
                                         &kTexture);
 glGenTextures(1, &texture); // Optional. GLUpload can generate a texture.
 result = ktxTexture_GLUpload(kTexture, &texture, &target, &glerror);
-ktxTexture_Destroy(texture);
+ktxTexture_Destroy(kTexture);
 // ...
 // GL rendering using the texture
 // ...
diff --git a/tests/loadtests/CMakeLists.txt b/tests/loadtests/CMakeLists.txt
index 28f85dd6b7..59188a0d87 100644
--- a/tests/loadtests/CMakeLists.txt
+++ b/tests/loadtests/CMakeLists.txt
@@ -18,6 +18,14 @@ if(NOT IOS)
         find_package(OpenGL REQUIRED)
     endif()
     if(KTX_LOADTEST_APPS_USE_LOCAL_DEPENDENCIES)
+        # When using a local SDL2 package installed by brew on macOS, at
+        # least, a mysterious .../lib/$<CONFIG> appears in the library
+        # search paths in the generated project. I've been unable to find
+        # this in the {INTERFACE,}_LINK_DIRECTORIES properties in any of
+        # the SDL2::SDL2 or {gl3,vk}loadtests targets. My guess is the Xcode
+        # generator is adding it. It leads to a harmless warning during
+        # build, harmless because the libraries are referenced by full paths
+        # and the .../lib directory is in the search path of SDL2::SDL2.
         find_package(SDL2 REQUIRED)
         if(NOT EMSCRIPTEN)
             # Tests that require assimp are omitted from loadtests
diff --git a/tools/imageio/imageinput.cc b/tools/imageio/imageinput.cc
index ae46e98893..2541c064e9 100644
--- a/tools/imageio/imageinput.cc
+++ b/tools/imageio/imageinput.cc
@@ -312,12 +312,16 @@ ImageInput::readImage(void* pBuffer, size_t bufferByteCount,
                      uint32_t subimage, uint32_t miplevel,
                      const FormatDescriptor& format)
 {
+    const auto& targetFormat = format.isUnknown() ? spec().format() : format;
+    size_t outScanlineByteCount
+           = targetFormat.basic.bytesPlane0 * spec().width();
+
     uint8_t* pDst = static_cast<uint8_t*>(pBuffer);
     for (uint32_t y = 0; y < spec().height(); y++) {
         readScanline(pDst, bufferByteCount,
-                     y, 0, subimage, miplevel, format);
-        pDst += spec().scanlineByteCount();
-        bufferByteCount -= spec().scanlineByteCount();
+                     y, 0, subimage, miplevel, targetFormat);
+        pDst += outScanlineByteCount;
+        bufferByteCount -= outScanlineByteCount;
     }
 }
 
diff --git a/tools/imageio/jpg.imageio/jpginput.cc b/tools/imageio/jpg.imageio/jpginput.cc
index c08ee04f90..eebb243f73 100644
--- a/tools/imageio/jpg.imageio/jpginput.cc
+++ b/tools/imageio/jpg.imageio/jpginput.cc
@@ -362,13 +362,16 @@ void JpegInput::readImage(void* bufferOut, size_t bufferByteCount,
                           uint subimage, uint miplevel,
                           const FormatDescriptor& format)
 {
-    if (bufferByteCount < spec().imageByteCount())
+    const auto& targetFormat = format.isUnknown() ? spec().format() : format;
+    size_t outImageByteCount
+           = targetFormat.basic.bytesPlane0 * spec().width() * spec().height();
+    if (bufferByteCount < outImageByteCount)
         throw buffer_too_small();
 
     pJd->begin_decoding();
     decodingBegun = true;
     ImageInput::readImage(bufferOut, bufferByteCount,
                           subimage, miplevel,
-                          format);
+                          targetFormat);
 }
 
diff --git a/tools/ktxtools_mainpage.md b/tools/ktxtools_mainpage.md
index d21e8b3bcc..3a6a8588bc 100644
--- a/tools/ktxtools_mainpage.md
+++ b/tools/ktxtools_mainpage.md
@@ -23,14 +23,14 @@ ktx Overview
 | @ref ktx_validate | Validate a KTX2 file | `ktx2check` |
 | @ref ktx_help | Display help information about the ktx tools | - |
 
-Equivalent old tools are deprecated and will be removed in the near future.
+Equivalent old tools are deprecated and will be removed soon.
 
-Some features of old tools are not currently available in their new equivalent.
+Some features of old tools are not currently available in the new equivalent.
 
 | Old Tool | New Tool | Missing Features |
 | :------: | :------: | ---------------- |
-| @ref toktx  | @ref ktx_create "create" | JPEG and NBPM input and scaling/resizing. |
-| @ref ktxsc  | @ref ktx_encode "encode" | ASTC encoding. This can be done in `create`. |
+| @ref toktx  | @ref ktx_create "create" | JPEG and NBPM input and scaling/resizing of input images. |
+| @ref ktxsc  | @ref ktx_encode "encode" | ASTC encoding. This can be done in `create`.<br>Deflation of a KTX2 file with zlib or zstd.|
 
 The command-line syntax and semantics differ from the old tools including, but not limited to: