mazanoke

Developer Productivity

A self‑hosted local image optimizer that runs in your browser, works offline, and keeps images private on the device.

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HTML Latest v1.1.6 · 2mo ago Security brief →

Features

Optimize images directly in the browser with quality, size, dimension controls and format conversion (JPG, PNG, WebP, ICO, HEIC, AVIF, TIFF, GIF, SVG).
Privacy‑focused: works completely offline, processes images on‑device, strips EXIF data, and has no tracking.
Installable as a Progressive Web App for easy desktop or mobile use.

Recent releases

View all 2 releases →

v1.1.6 Breaking risk 2mo

Fixed Firefox conversion output type, SVG optimization failures, duplicate auth_basic causing bootloops, and Docker compose restart policy crashes.

Full changelog

A long‑overdue spring‑cleaning release to address bugs and improve stability before the planned refactoring (#44). The upcoming refactoring is intended to make the codebase more maintainable and provide a better foundation for expanding the app with new features.

I'm also happy to finally include the community contributions provided since the last release!

Improvements

Minor optimization in PWA caching logic.
Upgrade dependencies:
- Refactor breaking changes in ico.js.
- Remove png2icojs dependency as ico.js now supports encoding (and not just decoding).

Fixes

Firefox: Incorrect file type of the output file when converting from HEIC, AVIF, PNG, WebP, produces .jpeg instead of png. (#42, #46) by @dgrayvold
Firefox: SVG optimization and conversion fails due to not having explicit width and height dimensions. (#35, #48) by @dgrayvold
Prevent duplicate auth_basic, causing bootloops. (#49, #50) by @LouisLau-art
Docker compose missing restart policy causes container to crash on restart (#40, 5a062f1847ea0321f19ee54724ffd020035dcc30)

Docs