ToolMug is a free collection of online tools: merge and compress PDFs, compress and convert images, make QR codes, clean up text, debug code, run network lookups, and use all kinds of calculators and everyday helpers. Open a page and start working — no account, no software to install.
The name comes from the mug on your desk: something you reach for without thinking.
Why this site exists
Many online tools make you upload your file, wait in a queue, sit through ads, or sign up and pay after a couple of uses. Yet compressing a photo, merging a few PDFs or formatting some JSON is something a modern browser can do on its own. There is no need to hand your files to someone else’s server.
So the tools here follow a few rules:
- If it can run in the browser, it runs in the browser. Most tools process everything on your device; files and text are never uploaded. Each tool page says how it works right under the title, so you can check before you start.
- Ready when you are. No sign-up and nothing to install.
- Explain things clearly. Every tool page has steps, option descriptions and an FAQ, so you can check a result when something looks off.
Tools that need a server
A few tools cannot work without a server: network lookups such as DNS, SSL certificate checks and traceroute, plus HEIC photo conversion. These send the domain, URL or file you provide to our server, which processes it and discards it straight away — nothing is kept. Their pages say “Processed on our server; nothing is stored” under the title. See the privacy policy for details.
Who runs it
ToolMug is built and maintained by one independent developer in their spare time. It launched in September 2026.
Tools and guides keep improving. If a result looks wrong, a tool doesn’t work for you, or you want a tool we don’t have yet, leave a message on the contact page — or click “Something’s wrong” under any tool to report it directly.
How it’s funded
ToolMug is free to use and has no paid features. The developer covers the server and domain costs.