From bd28fd786affca9f324b2c9552270721b673cdd5 Mon Sep 17 00:00:00 2001
From: lmj01 <lmj01@users.noreply.github.com>
Date: Fri, 1 Sep 2023 17:37:00 +0800
Subject: [PATCH] update

---
 gimp/JPEG.md      |  3 +++
 gimp/exif.md      | 10 ++++++++++
 index/standard.md |  4 ++++
 nodejs/index.md   |  1 +
 nodejs/pnpm.md    |  7 +++++++
 5 files changed, 25 insertions(+)
 create mode 100644 nodejs/pnpm.md

diff --git a/gimp/JPEG.md b/gimp/JPEG.md
index 4d75177..e35856a 100644
--- a/gimp/JPEG.md
+++ b/gimp/JPEG.md
@@ -1,3 +1,4 @@
+# jpeg格式
 
 ## JPEG
 是一种有损压缩,损失的部分是人眼视觉不容易发现的部分，利用人眼对计算机色彩中的高频信息部分不敏感的特点，研究发现人眼对亮度变换的敏感度比色彩变化的敏感度高，因此可以认为Y分量比UV分量重要，故采样时降低UV分量的采样率。对原始图像进行JPEG编码分成两步：
@@ -46,3 +47,5 @@ quality依赖图像色域，图像的对比度，用户对图像的敏感度
 75% JPEG quality and lower begins to show obvious differences in the image, which can reduce your website user experience.
 60% JPEG quality good for web
 
+## 参考
+- [This section contains TIFF related topics. It includes a freeware TIFF Tag Viewer application, the LibTiff mailing list archive, and a TIFF-specific links page](https://www.awaresystems.be/imaging.html)
\ No newline at end of file
diff --git a/gimp/exif.md b/gimp/exif.md
index e8fe257..31a2116 100644
--- a/gimp/exif.md
+++ b/gimp/exif.md
@@ -5,3 +5,13 @@ read, write and edit meta information
 [ExifTool](https://exiftool.org/)工具可以用来查看meta信息
 
 exiftool -a -S -G0 xxx.ext
+
+## extensions
+
+### File
+FileType: JPEG,JPEG,TIFF
+FileTypeExtension: jpg,tif
+MIMEType: image/jpeg,image/tiff
+### EXIF
+oritentation horizontal(normal)
+
diff --git a/index/standard.md b/index/standard.md
index 5f33b7e..2874fb9 100644
--- a/index/standard.md
+++ b/index/standard.md
@@ -25,6 +25,10 @@
 
 - [图像格式](../others/images.md)
 - [The DICOM Standard Current Edition](https://www.dicomstandard.org/current)
+- [Color Profile](../gimp/ColorProfile.md)
+- [exif tool](../gimp/exif.md)
+- [JPEG](../gimp/JPEG.md)
+- [CT](../cg/ct.md)
 
 ### OHIF
 
diff --git a/nodejs/index.md b/nodejs/index.md
index 60fd6ba..272edf3 100644
--- a/nodejs/index.md
+++ b/nodejs/index.md
@@ -2,6 +2,7 @@
 
 - [Electron](./electron.md)
 - [NPM](./npm.md)
+- [pnpm](./pnpm.md)
 - [test测试](./test.md)
 - [diff算法](./diff.md)
 - [图像处理](./ImageManipulation.md)
diff --git a/nodejs/pnpm.md b/nodejs/pnpm.md
new file mode 100644
index 0000000..3381235
--- /dev/null
+++ b/nodejs/pnpm.md
@@ -0,0 +1,7 @@
+# [pnpm](https://pnpm.io/)
+
+```javascript
+pnpm i // 按照依赖
+pnpm add libName --save // 按照库
+```
+