About

What this is

webtoolz is a set of free developer tools that work without an account. Paste JSON and it formats. Drop a video and it converts. Describe a song and it writes one. There is no sign-up wall, no trial, and no upsell.

Why it works this way

Most of these tools run in your browser on purpose. Uploading a config file or a client's video to somebody's server to do a job the browser can already do is a bad trade, so we do not make it. The media tools run ffmpeg compiled to WebAssembly for the same reason.

That has real costs, and it is worth being honest about them. The ffmpeg core is a large download the first time you use it in a session. It is single-threaded, so a long 4K clip takes a while and will pin a core. Browsers give a tab a limited amount of memory, and Safari and phones give it less, so very large files can fail there when they would have worked on a server.

Some things genuinely need one. Music generation needs a GPU. AI repair needs a model. Share links need somewhere to put the file. Those features call a server, and the privacy policy says exactly what each one sends.

How it is paid for

There is no paid tier. AI repair, music generation, and hosted exams cost real money to run, and covering that cost is why the site may carry advertising. If it does, it will be listed on the cookie policy before the first ad loads.

Open source

The code is on GitHub. You can read what each tool does with your data instead of taking this page's word for it, and bug reports and pull requests are welcome.

Get in touch

hello@webtoolz.dev reaches us. A tool you wish existed is as welcome as a bug report.