54 free browser-based tools covering video, audio, PDF, images, security and finance. Everything runs locally — FFmpeg.wasm for video/audio, pdf-lib for PDFs, Web Crypto API for passwords. Files never leave your browser tab. ✓ No upload ✓ No watermark ✓ No signup ✓ Works offline after first visit Built for people who don't want to hand their files to a random server just to compress a PDF or trim a video.