About UsefulCrate

A small collection of everyday utilities that do their work inside your browser, so your files never leave your device.

Why this exists

Search for something as ordinary as "compress an image" and you will find dozens of sites that want you to upload your file to their server first. Some are honest about what happens next. Many are not. Either way, the file you are trying to shrink is now sitting on a machine you do not control — and it may be a passport scan, a signed contract, or a photo of someone you care about.

That never made much sense. A modern browser can already resize an image, compute a hash, format JSON, or generate a password. None of that requires a round trip to a data centre. UsefulCrate exists to do those jobs the obvious way: locally, instantly, and without asking for anything.

How it works

Every tool on this site is plain JavaScript running in your browser tab. There are no upload endpoints, no queues, and no background jobs. When you drop a file in, your browser reads it from disk, transforms it in memory, and hands you the result. If you want proof, open your browser's developer tools, switch to the Network tab, and use any tool — you will not see a request carrying your file.

The practical consequences are worth spelling out:

• It is private by construction. Not by promise — there is simply no code path that sends your file anywhere.
• It is fast. No upload, no queue, no download wait. The only limit is your own machine.
• It works offline. Once the page has loaded, the tools keep working even if your connection drops.
• There is no account. No sign-up, no email, no password to forget.

What it is not

These are small, focused tools, not a professional suite. Image re-encoding is convenient but will not match a dedicated photo editor, and you should always keep a copy of anything important and check the output before relying on it. If a job needs specialised software, use the specialised software.

How it is paid for

The site is free and carries no paywall. It is funded by advertising. Ads are served by third-party networks, which use cookies — this is described in full in the Privacy Policy. Because the tools themselves are local, blocking those cookies changes nothing about how they work.

Get in touch

Found a bug, want a tool that is not here yet, or spotted something that looks wrong? The contact page has the details. Requests for new tools are genuinely welcome — a good number of the tools on this site started as someone's suggestion.