Compress, convert & edit media — right in your browser.
Free, fast and private video, audio and image tools. Every tool runs entirely on your device — nothing is ever uploaded, stored or tracked. No queues, no file-size limits, no watermark.
All tools, by category
17 tools and counting — free forever.
Video tools
Docs tools
Why MediaToolbox?
The privacy-first media toolbox.
Nothing leaves your device
All processing happens locally with in-browser engines. Your files are never uploaded, stored or seen by anyone.
No limits, no watermark
Because your files never hit a server, there are no file-size caps, no queues and no waiting rooms.
Fast by design
No upload, no download, no server round-trip. Press a button and your result is ready in seconds.
Free forever
Every tool is completely free — no accounts, no trials, no watermarks. Ever.
Guides & learn
Plain-English media explainers.
How to compress a video without losing quality (2026)
Why videos are huge, what CRF actually means, and the exact settings to shrink a file by 80% while keeping it watchable.
Read guide →MP4 vs WebM: which video format should you use?
MP4 is everywhere, WebM is smaller and free of patents. Here's when each wins, and how to convert between them.
Read guide →JPEG vs PNG vs WebP: image formats explained
Photos, logos, screenshots, web images — each job has a best format. A plain-English guide to picking the right one.
Read guide →