diff --git a/packages/assetpack/src/image/mipmap.ts b/packages/assetpack/src/image/mipmap.ts
index 19755a8d..2b4f6f84 100644
--- a/packages/assetpack/src/image/mipmap.ts
+++ b/packages/assetpack/src/image/mipmap.ts
@@ -9,7 +9,7 @@ import type { SharpProcessingOptions } from './types.js';
 
 export interface MipmapOptions extends PluginOptions {
     /** A template for denoting the resolution of the images. */
-    template?: string;
+    template?: string | ((resolution: number) => string);
     /** An object containing the resolutions that the images will be resized to. */
     resolutions?: { [x: string]: number };
     /** A resolution used if the fixed tag is applied. Resolution must match one found in resolutions. */
@@ -94,8 +94,13 @@ export function mipmap(defaultOptions: MipmapOptions = {}): AssetPipe<MipmapOpti
                 let resolution = '';
 
                 if (options) {
-                    resolution = (options as Required<MipmapOptions>).template.replace('%%', `${data.resolution}`);
-                    resolution = data.resolution === 1 ? '' : resolution;
+                    const template = (options as Required<MipmapOptions>).template;
+
+                    if (typeof template === 'function') {
+                        resolution = template(data.resolution);
+                    } else if (data.resolution !== 1) {
+                        resolution = template.replace('%%', `${data.resolution}`);
+                    }
                 }
 
                 const end = `${resolution}${data.format}`;
diff --git a/packages/assetpack/src/spine/spineAtlasMipmap.ts b/packages/assetpack/src/spine/spineAtlasMipmap.ts
index a0c418ed..3604c713 100644
--- a/packages/assetpack/src/spine/spineAtlasMipmap.ts
+++ b/packages/assetpack/src/spine/spineAtlasMipmap.ts
@@ -37,9 +37,13 @@ export function spineAtlasMipmap(_options?: SpineOptions): AssetPipe<SpineOption
             // loop through each resolution and pack the images
             const assets = Object.values(resolutionHash).map((resolution) => {
                 const scale = resolution / largestResolution;
-                let resolutionLabel = options.template.replace('%%', resolution.toString());
+                let resolutionLabel = '';
 
-                resolutionLabel = resolution === 1 ? '' : resolutionLabel;
+                if (typeof options.template === 'function') {
+                    resolutionLabel = options.template(resolution);
+                } else if (resolution !== 1) {
+                    resolutionLabel = options.template.replace('%%', resolution.toString());
+                }
 
                 const outputName = asset.filename.replace(/(\.[\w\d_-]+)$/i, `${resolutionLabel}$1`);
 
diff --git a/packages/assetpack/src/texture-packer/packer/createJsons.ts b/packages/assetpack/src/texture-packer/packer/createJsons.ts
index 70769656..0fde767a 100644
--- a/packages/assetpack/src/texture-packer/packer/createJsons.ts
+++ b/packages/assetpack/src/texture-packer/packer/createJsons.ts
@@ -17,6 +17,7 @@ export function createJsons(
     options: {
         textureName: string;
         resolution: number;
+        resolutionTemplate: string | ((resolution: number) => string);
         textureFormat: 'png' | 'jpg';
         nameStyle: 'short' | 'relative';
         removeFileExtension: boolean;
@@ -66,7 +67,14 @@ export function createJsons(
         json.meta = {
             app: 'http://github.com/pixijs/assetpack',
             version: '1.0',
-            image: createName(options.textureName, i, bins.length !== 1, options.resolution, options.textureFormat),
+            image: createName(
+                options.textureName,
+                i,
+                bins.length !== 1,
+                options.resolution,
+                options.textureFormat,
+                options.resolutionTemplate,
+            ),
             format: 'RGBA8888',
             size: {
                 w: width,
@@ -78,7 +86,14 @@ export function createJsons(
         };
 
         jsons.push({
-            name: createName(options.textureName, i, bins.length !== 1, options.resolution, 'json'),
+            name: createName(
+                options.textureName,
+                i,
+                bins.length !== 1,
+                options.resolution,
+                'json',
+                options.resolutionTemplate,
+            ),
             json,
         });
     }
diff --git a/packages/assetpack/src/texture-packer/packer/createTextures.ts b/packages/assetpack/src/texture-packer/packer/createTextures.ts
index b263a110..cce19db9 100644
--- a/packages/assetpack/src/texture-packer/packer/createTextures.ts
+++ b/packages/assetpack/src/texture-packer/packer/createTextures.ts
@@ -54,7 +54,14 @@ export async function createTextures(
 
         texturePromises.push(
             compositeTexture.toBuffer().then((buffer) => ({
-                name: createName(options.textureName, i, bins.length !== 1, options.resolution, options.textureFormat),
+                name: createName(
+                    options.textureName,
+                    i,
+                    bins.length !== 1,
+                    options.resolution,
+                    options.textureFormat,
+                    options.resolutionTemplate,
+                ),
                 buffer,
             })),
         );
@@ -63,9 +70,22 @@ export async function createTextures(
     return await Promise.all(texturePromises);
 }
 
-export function createName(name: string, page: number, paginate: boolean, scale: number, format: string): string {
+export function createName(
+    name: string,
+    page: number,
+    paginate: boolean,
+    scale: number,
+    format: string,
+    template: string | ((resolution: number) => string),
+): string {
     const pageLabel = !paginate ? '' : `-${page}`;
-    const scaleLabel = scale !== 1 ? `@${scale}x` : '';
+    let scaleLabel = '';
+
+    if (typeof template === 'function') {
+        scaleLabel = template(scale);
+    } else if (scale !== 1) {
+        scaleLabel = template.replace('%%', `${scale}`);
+    }
 
     return `${name}${pageLabel}${scaleLabel}.${format}`;
 }
diff --git a/packages/assetpack/src/texture-packer/packer/packTextures.ts b/packages/assetpack/src/texture-packer/packer/packTextures.ts
index ba7c7691..e0cb0bf3 100644
--- a/packages/assetpack/src/texture-packer/packer/packTextures.ts
+++ b/packages/assetpack/src/texture-packer/packer/packTextures.ts
@@ -45,6 +45,7 @@ export interface PackTexturesOptions {
     removeFileExtension?: boolean;
     autodetectAnimations?: boolean;
     sharpOptions?: SharpProcessingOptions;
+    resolutionTemplate?: string | ((resolution: number) => string);
 }
 
 interface PackTexturesResult {
@@ -65,6 +66,7 @@ export async function packTextures(_options: PackTexturesOptions): Promise<PackT
         textureFormat: 'png',
         scale: 1,
         resolution: 1,
+        resolutionTemplate: '@%%x',
         nameStyle: 'relative',
         removeFileExtension: false,
         autodetectAnimations: true,
diff --git a/packages/assetpack/src/texture-packer/texturePacker.ts b/packages/assetpack/src/texture-packer/texturePacker.ts
index 5e99da78..f6552d86 100644
--- a/packages/assetpack/src/texture-packer/texturePacker.ts
+++ b/packages/assetpack/src/texture-packer/texturePacker.ts
@@ -14,7 +14,7 @@ export interface TexturePackerOptions extends PluginOptions {
     /** Options for creating different resolutions of the sprite sheet. */
     resolutionOptions?: {
         /** A template for denoting the resolution of the images. */
-        template?: string;
+        template?: string | ((resolution: number) => string);
         /** An object containing the resolutions that the images will be resized to. */
         resolutions?: Record<string, number>;
         /** A resolution used if the fixed tag is applied. Resolution must match one found in resolutions. */
@@ -82,7 +82,7 @@ export function texturePacker(_options: TexturePackerOptions = {}): AssetPipe<Te
 
         async transform(asset: Asset, options) {
             const { resolutionOptions, texturePacker } = options;
-            const { resolutions, fixedResolution } = resolutionOptions!;
+            const { resolutions, fixedResolution, template: resolutionTemplate } = resolutionOptions!;
 
             const fixedResolutions = { [fixedResolution]: resolutions[fixedResolution] };
 
@@ -147,6 +147,7 @@ export function texturePacker(_options: TexturePackerOptions = {}): AssetPipe<Te
                                 texturesToPack,
                                 scale,
                                 resolution,
+                                resolutionTemplate,
                             });
 
                             if (options.addFrameNames) {
diff --git a/packages/docs/docs/guide/pipes/mipmap.mdx b/packages/docs/docs/guide/pipes/mipmap.mdx
index 58dfa41c..6c0ac0e9 100644
--- a/packages/docs/docs/guide/pipes/mipmap.mdx
+++ b/packages/docs/docs/guide/pipes/mipmap.mdx
@@ -53,12 +53,12 @@ export default {
 
 ## API
 
-| Option          | Type     | Description                                                                                                                                                      |
-| --------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| template        | `string` | A template for denoting the resolution of the images.<br />Defaults to `@%%x`.                                                                                   |
-| resolutions     | `object` | An object containing the resolutions that the images will be resized to.<br />Defaults to `{ default: 1, low: 0.5 }`.                                            |
-| fixedResolution | `string` | A resolution used if the fix tag is applied e.g.<br />Resolution must match one found in resolutions.<br />Defaults to `default`.                                |
-| sharpOptions    | `object` | Options for the sharp library to use when generating the images. See [sharp resize](https://sharp.pixelplumbing.com/api-resize/#resize).<br />Defaults to `{ }`. |
+| Option          | Type                                       | Description                                                                                                                                                                                     |
+| --------------- | ------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| template        | `string`, `(resolution: number) => string` | If a string:<br />a template for denoting the resolution of the images.<br /><br />If a function:<br />a custom formatter for denoting the resolution of images.<br /><br />Defaults to `@%%x`. |
+| resolutions     | `object`                                   | An object containing the resolutions that the images will be resized to.<br />Defaults to `{ default: 1, low: 0.5 }`.                                                                           |
+| fixedResolution | `string`                                   | A resolution used if the fix tag is applied e.g.<br />Resolution must match one found in resolutions.<br />Defaults to `default`.                                                               |
+| sharpOptions    | `object`                                   | Options for the sharp library to use when generating the images. See [sharp resize](https://sharp.pixelplumbing.com/api-resize/#resize).<br />Defaults to `{ }`.                                |
 
 ## Tags
 
diff --git a/packages/docs/docs/guide/pipes/texture-packer.mdx b/packages/docs/docs/guide/pipes/texture-packer.mdx
index c909f7f6..9b67a7d4 100644
--- a/packages/docs/docs/guide/pipes/texture-packer.mdx
+++ b/packages/docs/docs/guide/pipes/texture-packer.mdx
@@ -45,32 +45,32 @@ export default {
 
 ## API
 
-| Option                               | Type              | Description                                                                                                                                                           |
-| ------------------------------------ | ----------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| texturePacker                        | `object`          | Options for generating texture atlases.                                                                                                                               |
-| texturePacker.textureFormat          | `png\|jpg`        | The format of the texture atlas file.<br />Defaults to `png`.                                                                                                         |
-| texturePacker.padding                | `number`          | The padding between sprites in the texture atlas.<br />Defaults to `2`.                                                                                               |
-| texturePacker.fixedSize              | `boolean`         | Whether the texture atlas should be a fixed size.<br />Defaults to `false`.                                                                                           |
-| texturePacker.powerOfTwo             | `boolean`         | Whether the texture atlas should be a power of two.<br />Defaults to `false`.                                                                                         |
-| texturePacker.width                  | `number`          | The width of the texture atlas.<br />Defaults to `1024`.                                                                                                              |
-| texturePacker.height                 | `number`          | The height of the texture atlas.<br />Defaults to `1024`.                                                                                                             |
-| texturePacker.allowTrim              | `boolean`         | Whether the texture atlas should allow trimming.<br />Defaults to `true`.                                                                                             |
-| texturePacker.allowRotation          | `boolean`         | Whether the texture atlas should allow rotation.<br />Defaults to `true`.                                                                                             |
-| texturePacker.alphaThreshold         | `number`          | The alpha threshold for the texture atlas.<br />Defaults to `0.1`.                                                                                                    |
-| texturePacker.scale                  | `number`          | The scale of the texture atlas.<br />Defaults to `1`.                                                                                                                 |
-| texturePacker.resolution             | `number`          | The resolution of the texture atlas.<br />Defaults to `1`.                                                                                                            |
-| texturePacker.nameStyle              | `short\|relative` | The name style of the texture atlas.<br />Defaults to `relative`.                                                                                                     |
-| texturePacker.removeFileExtension    | `boolean`         | Whether the file extension should be removed.<br />Defaults to `false`.                                                                                               |
-| texturePacker.autodetectAnimations   | `boolean`         | Whether to group sprites with numeric suffixes as animations.<br />Defaults to `true`.                                                                                |
-| texturePacker.sharpOptions           | `object`          | Options for the sharp library to use when generate the texture atlas. See [sharp resize](https://sharp.pixelplumbing.com/api-resize/#resize).<br />Defaults to `{ }`. |
-|                                      |                   |                                                                                                                                                                       |
-| resolutionOptions                    | `object`          | Options for generating resolutions.                                                                                                                                   |
-| resolutionOptions.template           | `string`          | A template for denoting the resolution of the images.<br />Defaults to `@%%x`.                                                                                        |
-| resolutionOptions.resolutions        | `object`          | An object containing the resolutions that the images will be resized to.<br />Defaults to `{ default: 1, low: 0.5 }`.                                                 |
-| resolutionOptions.fixedResolution    | `string`          | A resolution used if the fix tag is applied. Resolution must match one found in resolutions.<br />Defaults to `default`.                                              |
-| resolutionOptions.maximumTextureSize | `number`          | The maximum size a sprite sheet can be before its split out.<br />Defaults to `4096`.                                                                                 |
-|                                      |                   |                                                                                                                                                                       |
-| addFrameNames                        | `boolean`         | Whether to add frame names to the data in the manifest<br />Defaults to `false`.                                                                                      |
+| Option                               | Type                                       | Description                                                                                                                                                                                     |
+| ------------------------------------ | ------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| texturePacker                        | `object`                                   | Options for generating texture atlases.                                                                                                                                                         |
+| texturePacker.textureFormat          | `png\|jpg`                                 | The format of the texture atlas file.<br />Defaults to `png`.                                                                                                                                   |
+| texturePacker.padding                | `number`                                   | The padding between sprites in the texture atlas.<br />Defaults to `2`.                                                                                                                         |
+| texturePacker.fixedSize              | `boolean`                                  | Whether the texture atlas should be a fixed size.<br />Defaults to `false`.                                                                                                                     |
+| texturePacker.powerOfTwo             | `boolean`                                  | Whether the texture atlas should be a power of two.<br />Defaults to `false`.                                                                                                                   |
+| texturePacker.width                  | `number`                                   | The width of the texture atlas.<br />Defaults to `1024`.                                                                                                                                        |
+| texturePacker.height                 | `number`                                   | The height of the texture atlas.<br />Defaults to `1024`.                                                                                                                                       |
+| texturePacker.allowTrim              | `boolean`                                  | Whether the texture atlas should allow trimming.<br />Defaults to `true`.                                                                                                                       |
+| texturePacker.allowRotation          | `boolean`                                  | Whether the texture atlas should allow rotation.<br />Defaults to `true`.                                                                                                                       |
+| texturePacker.alphaThreshold         | `number`                                   | The alpha threshold for the texture atlas.<br />Defaults to `0.1`.                                                                                                                              |
+| texturePacker.scale                  | `number`                                   | The scale of the texture atlas.<br />Defaults to `1`.                                                                                                                                           |
+| texturePacker.resolution             | `number`                                   | The resolution of the texture atlas.<br />Defaults to `1`.                                                                                                                                      |
+| texturePacker.nameStyle              | `short\|relative`                          | The name style of the texture atlas.<br />Defaults to `relative`.                                                                                                                               |
+| texturePacker.removeFileExtension    | `boolean`                                  | Whether the file extension should be removed.<br />Defaults to `false`.                                                                                                                         |
+| texturePacker.autodetectAnimations   | `boolean`                                  | Whether to group sprites with numeric suffixes as animations.<br />Defaults to `true`.                                                                                                          |
+| texturePacker.sharpOptions           | `object`                                   | Options for the sharp library to use when generate the texture atlas. See [sharp resize](https://sharp.pixelplumbing.com/api-resize/#resize).<br />Defaults to `{ }`.                           |
+|                                      |                                            |                                                                                                                                                                                                 |
+| resolutionOptions                    | `object`                                   | Options for generating resolutions.                                                                                                                                                             |
+| resolutionOptions.template           | `string`, `(resolution: number) => string` | If a string:<br />a template for denoting the resolution of the images.<br /><br />If a function:<br />a custom formatter for denoting the resolution of images.<br /><br />Defaults to `@%%x`. |
+| resolutionOptions.resolutions        | `object`                                   | An object containing the resolutions that the images will be resized to.<br />Defaults to `{ default: 1, low: 0.5 }`.                                                                           |
+| resolutionOptions.fixedResolution    | `string`                                   | A resolution used if the fix tag is applied. Resolution must match one found in resolutions.<br />Defaults to `default`.                                                                        |
+| resolutionOptions.maximumTextureSize | `number`                                   | The maximum size a sprite sheet can be before its split out.<br />Defaults to `4096`.                                                                                                           |
+|                                      |                                            |                                                                                                                                                                                                 |
+| addFrameNames                        | `boolean`                                  | Whether to add frame names to the data in the manifest<br />Defaults to `false`.                                                                                                                |
 
 ## Tags