About SwiftTools
SwiftTools is an independent set of everyday utilities — PDF, images, text and numbers — built around one constraint: your files never leave your computer.
What this site is
Roughly thirty tools for the chores that keep coming back: merging a PDF before you email it, getting a photo under an upload limit, converting the HEIC file your phone produced, counting the words in something you wrote, working out what a loan actually costs over its life. Each tool does one job, on the page you already have open, with no queue and no waiting.
The rule everything here follows
Every tool runs inside your browser. When you choose a file, the page reads it straight from your disk, works on it in memory, and writes the result back to your downloads folder. Nothing is uploaded, because there is no server doing the work — the page you loaded already contains the PDF parser, the image encoder and the arithmetic. Close the tab and the working copy is gone. This is not a promise in a privacy policy; it is how the software is built, and you can check it yourself by opening your browser developer tools and watching the network panel stay quiet while a file is processed.
What this site is not
There is no account to create, no file storage, no sharing link that quietly stays live after you leave, and no paid tier holding the settings that actually matter. If a tool cannot do what you need, it says so rather than pretending.
How it is funded
SwiftTools is free and has no subscription. Running costs are covered by advertising, which is why you will see clearly marked ad placements around the page. Because all processing happens on your device, that ad code is the only third party anywhere near this site, and it is deliberately kept out of the area you actually work in. Any tool that needed your files uploaded would not be worth running here.
Contact
Questions, bug reports and corrections are all welcome. Write to:
This mailbox is read by a person. Say which tool you were using, and if something went wrong, which browser you saw it in — that is usually enough to reproduce it.