Before you write
A few things come up often enough that the answer might already be here.
"The tool says my compressed file isn't smaller"
That's the tool refusing to hand you a worse file. Some PDFs and images are already stored about as efficiently as they can be — usually files that were exported by good software in the first place. Rather than give you a bigger file with "compressed" in the name, the tool stops and tells you. It isn't broken.
"Do my files really stay on my device?"
Yes, and you can check it yourself: open your browser's developer tools, go to the Network tab, and run any tool. You'll see no upload. You can also disconnect from the internet entirely after the page has loaded — the tools keep working, because there's nothing to send. That's the whole design.
"A big file made my browser slow or crash"
Everything runs on your own machine, so your device's memory is the limit. Video tools are the heaviest — re-encoding decodes and re-encodes every frame. If a large file struggles, try a shorter clip, close other tabs, or use a desktop browser instead of a phone.
"Can you add a tool for X?"
Please ask. The one hard constraint is that it has to run entirely in the browser — if a job genuinely needs a server (sending email, looking things up in a database), it doesn't belong here. Everything else is fair game.
What happens to your message
Your subject line and message are stored so we can read and act on them. Your email address is optional — leave it blank and we simply have no way to write back, which is fine if you're just reporting something. We don't use anything you send here for advertising, and we don't pass it to anyone else. See the Privacy Policy for how long it's kept and how to have it deleted.