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Add avif and webm to the list of supported extensions #2999

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Add avif and webm to the list of supported extensions #2999

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ca04d0f
Add avif and webm to the list of supported extensions
goekce Jul 10, 2026
63da9d4
Merge branch 'jupyter-book:main' into main
goekce Aug 15, 2026
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2 changes: 2 additions & 0 deletions packages/myst-cli/src/process/site.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,8 @@ import { cpus } from 'node:os';

const WEB_IMAGE_EXTENSIONS = [
ImageExtensions.mp4,
ImageExtensions.webm,
ImageExtensions.avif,
ImageExtensions.webp,
ImageExtensions.svg,
ImageExtensions.gif,
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4 changes: 3 additions & 1 deletion packages/myst-cli/src/utils/resolveExtension.ts
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Expand Up @@ -13,13 +13,15 @@ export enum ImageExtensions {
pdf = '.pdf',
eps = '.eps',
webp = '.webp',
avif = '.avif',
mp4 = '.mp4', // A moving image!
mov = '.mov',
avi = '.avi',
webm = '.webm',
}

export const KNOWN_IMAGE_EXTENSIONS = Object.values(ImageExtensions);
export const KNOWN_VIDEO_EXTENSIONS = ['.mp4', '.mov', '.avi'];
export const KNOWN_VIDEO_EXTENSIONS = ['.mp4', '.mov', '.avi', '.webm'];
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export const VALID_FILE_EXTENSIONS = ['.md', '.ipynb', '.tex', '.myst.json'];
export const KNOWN_FAST_BUILDS = new Set(['.ipynb', '.md', '.tex', '.myst.json']);
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