Image Optimizer

A fast, private desktop image optimizer.

A free and open source desktop app for compressing raster images and optimizing vector graphics. Files are processed locally on your computer.

Features

• Optimize JPEG, PNG, GIF, and SVG files in batches.
• Drop individual images or entire folders; nested folders are scanned recursively.
• Compare original and optimized images with an interactive before/after preview.
• Review per-file sizes, status, savings, total reduction, and elapsed time.
• Adjust JPEG and PNG quality before running a job.
• Convert JPEG and PNG images to WebP.
• Strip metadata and control where optimized files are written.
• Save results to a configurable output folder, add a .min suffix, or replace the source file.
• Reveal completed files in Finder, Explorer, or the Linux file manager.
• Download and install published updates from inside the app.

Supported formats

Input	Optimizer	Output
JPEG / JPG	mozjpeg	JPEG or WebP
PNG	pngquant	PNG or WebP
GIF	gifsicle	GIF
SVG	SVGO	SVG

WebP conversion is powered by cwebp.

Download

Download the latest installer from GitHub Releases.

• macOS: DMG and ZIP for Apple Silicon and Intel
• Windows: NSIS installer
• Linux: Snap package

Development

Requirements

• Node.js 24
• pnpm 10

Install dependencies and start the Electron app with hot reload:

pnpm install --frozen-lockfile
pnpm dev

Quality checks

Run the same checks used by CI:

pnpm check
pnpm format:check
pnpm build

pnpm check runs ESLint, TypeScript checks, and the Vitest test suite.

Packaging

Build an unpacked application directory:

pnpm package

Platform-specific packages can be created with:

pnpm package:mac
pnpm package:win
pnpm package:linux

For an unsigned, non-notarized macOS package suitable for local testing, run:

pnpm package:mac:local

Generated packages are written to dist.

Tech stack

• Electron
• Vue 3
• TypeScript
• Vite
• Tailwind CSS and shadcn-vue
• Vitest

Related

• Electron Vue Vite Boilerplate

Copyright (c) 2021-present, Anton Reshetov.