Cut File Sizes by 90%Without Uploading
Compress images, PDFs, and documents directly in your browser. No servers. No sign-up. No limits.
Works worldwide — Deutschland, Việt Nam, السعودية, Nederland, ایران. No upload, ever.
Drop files here to compress
JPEG, PNG, WebP, PDF, DOCX, PPTX, XLSX, MP3, WAV, FLAC
Advanced Options
Built for Privacy-First Compression
Professional file compression for developers, marketers, and businesses
How Local Processing Works
Your files never leave your device. Everything runs in your browser.
Your Browser
Files stay on your device. Nothing is uploaded to any server.
Local WASM Processing
MozJPEG, OxiPNG, and libwebp run directly in your browser via WebAssembly.
Compressed Output
Download optimized files instantly. Up to 90% smaller, same visual quality.
Your Browser
Files stay on your device. Nothing is uploaded to any server.
Local WASM Processing
MozJPEG, OxiPNG, and libwebp run directly in your browser via WebAssembly.
Compressed Output
Download optimized files instantly. Up to 90% smaller, same visual quality.
Real Results
E-commerce Store
Image-heavy product catalog optimized with FileSlim.
Photography Portfolio
Professional photographer optimizing high-resolution galleries.
Tech Startup
SaaS platform reducing infrastructure costs with optimized assets.
Resources & Ecosystem
Everything you need to optimize files — tools, guides, and an SDK for developers.