210 free tools · 100% in your browser
Online tools that never see your files.
Compress, convert, merge, calculate and clean up in seconds. Free, no sign-up: everything runs on your device.
- Files never leave your device
- No sign-up, no watermark
- Works offline
utilsdock
4.2 MB → 380 KB
−91 %
Example figures. Try it: drag the slider.
Most used
The everyday tools, one click away
Compress images onlineMake photos lighter with a before-and-after view, one or many at once.
Compress PDFShrink PDF files by recompressing their images, keeping the text selectable.
Merge PDF filesCombine several PDFs into one, in the order you choose, without uploading them.
HEIC to JPG converterTurn iPhone photos into JPG or PNG that open anywhere, without uploading them.
QR code generatorMake a QR code for a link, Wi-Fi, contact, email or text, and download it as PNG or SVG.
Strong password generatorGenerate strong random passwords in your browser. Nothing is sent or stored.
{ "name":
"Ana", "age": 31, "tags": [ … ] }
JSON formatter and validatorFormat, validate and repair JSON, with the exact line of any error.
Browse all 210 toolsImages, PDF, text, data, color, dates, calculators and more.
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Private by designYour files are processed on your own device and are never uploaded.
Free, no sign-upNo accounts, no limits and no watermarks on the results.
Works offlineAfter your first visit, the tools you have used keep working without a connection.
FastNo uploads and no queues: the result appears in seconds.
Tools that run on your device, not on a server
For years, converting an image or signing a PDF meant uploading your file to some website, waiting, downloading it back with a watermark on it, and trusting that somebody deleted it afterwards. Browsers can now do that work by themselves, and that changes the rules.
UtilsDock is built on exactly that. When you use a tool here, the code that does the work is downloaded once and runs on your own device, like an installed program. The result is faster, because nothing has to travel up and back down, and far more private: there is no copy of your file on any server, because it never left your computer or your phone.
It also sets the limits, and we would rather say them out loud: the tools depend on your device's memory, so a very large file can be slow on an old phone. When a tool has a realistic ceiling, you will find it written on its page before you start, not after it fails.