PixelSlim is an open-source, ultra-lightweight batch image optimizer and format converter designed natively for macOS. Built with Rust and Tauri v2, it compresses, resizes, and converts images 100% offline with instant launch (<250ms) and minimal RAM usage (~40 MB).

Which image formats does PixelSlim support?

PixelSlim accepts PNG, JPEG, JPG, WebP, AVIF, SVG, and GIF images, and can convert them into WebP, AVIF, PNG, JPEG, and SVG formats with customizable quality, target file sizes, and vectorization options.

Is PixelSlim safe and private? Does it upload images to the cloud?

PixelSlim is 100% private and offline. All compression and format conversion occurs locally on your Mac's hardware using native Rust libraries. Images are never uploaded to any remote server, and EXIF metadata and GPS location tags are automatically stripped to protect your privacy.

How does PixelSlim compare to Electron-based and web image compressors?

Unlike web tools (which require network bandwidth and queue times) and Electron apps (which often weigh 150+ MB and consume over 400 MB of RAM), PixelSlim is packaged as a tiny 6.8 MB Universal DMG, uses just ~40 MB of RAM, and processes batches in milliseconds.

Does PixelSlim support Apple Silicon Macs?

Yes. PixelSlim is compiled as a Universal macOS binary with native support for Apple Silicon (M1, M2, M3, M4) as well as Intel-based Macs.

High-performance batch compression, right on your Mac.

Q: Which image formats does PixelSlim support?

PixelSlim accepts PNG, JPEG, JPG, WebP, AVIF, SVG, and GIF images, and can convert them into WebP, AVIF, PNG, JPEG, and SVG formats with customizable quality, target file sizes, and vectorization options.

Q: Is PixelSlim safe and private? Does it upload images to the cloud?

PixelSlim is 100% private and offline. All compression and format conversion occurs locally on your Mac's hardware using native Rust libraries. Images are never uploaded to any remote server, and EXIF metadata and GPS location tags are automatically stripped to protect your privacy.

Q: How does PixelSlim compare to Electron-based and web image compressors?

Unlike web tools (which require network bandwidth and queue times) and Electron apps (which often weigh 150+ MB and consume over 400 MB of RAM), PixelSlim is packaged as a tiny 6.8 MB Universal DMG, uses just ~40 MB of RAM, and processes batches in milliseconds.

Q: Does PixelSlim support Apple Silicon Macs?

Yes. PixelSlim is compiled as a Universal macOS binary with native support for Apple Silicon (M1, M2, M3, M4) as well as Intel-based Macs.

Q: How much does PixelSlim cost?

PixelSlim is completely free and open-source under the MIT license, created by ZeoSpec.

Batch compress, resize, and convert images into WebP, AVIF, PNG, JPEG, and SVG with instant drag-and-drop. Built with Rust & Tauri v2 for near-instant launch, tiny ~40 MB RAM usage, and 100% offline privacy.

Download for macOS Universal DMG (Apple Silicon & Intel) • 6.8 MB

Star on GitHub

Converts to: WebP AVIF PNG JPEG SVG

• Accepts GIF, PNG, JPG, WebP, AVIF, SVG

⚡ <250ms Launch 🪶 6.8 MB DMG 🧠 ~40 MB RAM 🔒 100% Offline & Private

PixelSlim

Ultra-lightweight batch image optimizer & converter

System Light Dark

Target Format:

Keep Original WebP SVG AVIF PNG JPEG

SAVE TO:

Same folder

Custom folder

✨ Smart 🎯 Target Size 🎛️ Custom Quality

4 processed • Total saved: 8.4 MB (78%)

⚡ 58ms total

⋮⋮

PNG

hero-illustration.png WEBP

4.2 MB → 840 KB -80% 🛡️ 18ms

⋮⋮

PNG

product-dashboard.png AVIF

2.8 MB → 590 KB -79% 🛡️ 22ms

⋮⋮

SVG

vector-logomark.svg SVG

180 KB → 48 KB -73% 4ms

⋮⋮

JPG

gallery-cover.jpg JPEG

6.5 MB → 1.2 MB -81% 🛡️ 14ms

Frequently Asked Questions

What makes PixelSlim faster than web compressors?

PixelSlim is a native macOS application built with Rust and Tauri v2. Unlike web-based tools that require uploading heavy images over the network and waiting for remote server queues, PixelSlim processes files directly on your Mac's hardware using multithreaded native codecs. It launches in under 250ms and optimizes images in milliseconds without network latency.

Which image formats does PixelSlim convert between?

PixelSlim accepts PNG, JPEG/JPG, WebP, AVIF, SVG, and GIF files, and converts them into modern WebP, AVIF, PNG, JPEG, and SVG formats. It also includes vectorization tracing for raster graphics and automated SVG minification.

Is PixelSlim 100% offline and private?

Yes. PixelSlim operates completely offline with zero telemetry, zero analytics, and zero cloud uploads. Your images, personal photos, and sensitive company assets never leave your computer. Furthermore, PixelSlim automatically strips sensitive EXIF metadata and GPS location coordinates from processed files.

Does it support Apple Silicon (M1/M2/M3/M4) and Intel Macs?

Yes. PixelSlim is distributed as a Universal DMG containing a native fat binary for both Apple Silicon (ARM64) and Intel (x86_64) architectures. It runs at peak native speed on all modern macOS machines running macOS 11.0 Big Sur or later, while weighing only ~6.8 MB.

How much does PixelSlim cost, and what is its license?

PixelSlim is 100% free and open-source software published under the MIT license.