About Tool4U.net
What this is
Tool4U.net is a growing collection of small, focused utility tools — resize an image, merge a PDF, convert units, generate a QR code, check a file's hash, and dozens more. Each tool does one job, does it on one page, and gets you to the result in a few seconds.
Why browser-first
Most tools here run entirely in your browser instead of uploading your file to a server. That means your files stay on your own device, results appear instantly with no upload/ download round-trip, and the tool keeps working even if our server is briefly down. A small number of tools do need a server — see the Privacy Policy for exactly which ones and why.
Who's behind it
Tool4U.net is an independent, solo-developed project — not a company with a support team or a sales department. It's built and maintained by one person adding tools incrementally.
Get in touch
Found a bug, have a tool idea, or something's not working right? See the Contact page.