About

Nutter Tools is a toolbox, not a service.

Nutter Tools ( nutter/tools ) converts, compresses, and resizes files entirely inside your browser. The codecs are compiled to WebAssembly and run on your device. When you drop a file on one of our pages, it is processed locally and never uploaded. We could not read your files even if we wanted to: they never reach a server we operate.

What is live today

- Image tools (/images) convert between 20+ formats (including HEIC from iPhones and RAW files), compress, resize, and optimize, in batch, with every codec running locally.
- Encoding (/encoding), generator (/generate), crypto (/crypto), JSON (/json), and web (/web) tools cover base64 and URL encoding, passwords and UUIDs, hashes, JSON formatting, and JWT inspection. Same rule: nothing leaves the tab.
- Time tools (/time) cover timestamp and timezone conversion, duration math, and availability sharing, all computed in the page.
- Video and audio tools are in progress. Their pages currently explain what is coming; we would rather ship nothing than ship a tool that quietly uploads your media.

Why we built it this way

Most online converters ask you to upload private files to a stranger's server, then wait in a queue behind everyone else. We think that trade is backwards. A modern browser is a capable computing platform: WebAssembly runs real, battle-tested codecs (the same ones behind tools like FFmpeg) at native-adjacent speed. Once a Nutter Tools page and its engine code have loaded, it keeps working offline, on a plane or on locked-down networks, and your files stay yours. That design also means there is no account to create, no quota tied to your email, and no file retention policy to trust. There is simply nothing retained.

The trade-offs, honestly

Client-side processing is bounded by your device. Very large files depend on your browser's memory limits, and speed depends on your CPU rather than a server farm. There is no API and no server-side batch mode. If you need to process thousands of files programmatically, a command-line tool like FFmpeg is the better fit. For one photo or a folder of them, Nutter Tools trades a queue for privacy.

Where to go next

- Start with the image tools (/images) or browse every page on the site (/routes).
- Agents and crawlers: /llms.txt describes the site and when to use it; /sitemap.xml lists every indexable page.
- Questions, privacy, or legal matters: see contact (/contact); the media engines this site ships (and the ones it blocks) are listed on the licenses page (/licenses).

Canonical HTML: https://nutter.tools/about
Markdown version: https://nutter.tools/about/index.md
Plain-text version: https://nutter.tools/about/index.txt
Agent index: https://nutter.tools/llms.txt