elpx-optimizer

Makes eXeLearning projects (.elpx) lighter: smaller videos, images, audio and PDFs, in a project that is still editable in eXeLearning. The original is never touched.

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Web app

ateeducacion.github.io/elpx-optimizer: drop your .elpx and download the result. Everything runs in your browser; nothing is uploaded.

Command line

npx elpx-optimizer optimize course.elpx

docker run --rm -u $(id -u) -v "$PWD:/work" ateeducacion/elpx-optimizer optimize course.elpx

Both write course_optimized.elpx next to the original. Add --dry-run to see the plan first. npx needs Node.js 22 and FFmpeg for video and audio; the Docker image includes everything. All options →

What it does

• Recompresses videos, images, audio and PDFs, and the images inside attached ODT and ODP files, and keeps a new version only when it is valid and smaller.
• Finds missing, unused and duplicate files; on request it removes, merges and renames them.
• Refreshes the project thumbnail from its first page, or from an image of your choice.
• Verifies the whole package again before handing it over.

Also as an Agent Skill for AI assistants.

More

Presets and quality · Web app · CLI · Architecture · Diagnostics · Design decisions · Testing · npm · eXeLearning format · Contributing · Security

AGPL-3.0-or-later. Third-party components keep their licenses; see THIRD-PARTY-NOTICES.md. Made by the Área de Tecnología Educativa of the Government of the Canary Islands, whose logo is not covered by the project's license.