justuse.me
No upload · no sign-up · no watermark· 100% in your browser

The tool you need, already open.

122 privacy-first utilities — PDF, image, text, code, and more. Everything runs on your device. Pick a category below or search.

Browse by category →Monday late night — tuned to what people usually reach for now

Try one without leaving this page

Four of the most-used tools, fully working right here. The other 118 are one click away.

runs entirely on your device
LIVE · QR CODEopen →
Generate a QR code
Type anything — URL, text, Wi-Fi. Click to download.
LIVE · GENERATORopen →
Strong password
125 bits of entropy · regenerated locally
● strong
LIVE · TEXTopen →
Word & character counter
Paste anything — it never leaves your browser.
15
words
84
chars
70
no-spc
1m
read
LIVE · CONVERTopen →
Color converter
Pick or type — HEX · RGB · HSL update together.
HEX
RGB
HSL

Picked for you, right now

Monday late night — tuned to what people usually reach for now
See all 121 →

Browse by category

8 neighborhoods · 121 tools · all free, all local.
9 tools
PDF
Merge, split, compress, and convert PDFs online for free.
Merge PDFSplit PDFPDF to JPG+6 more
19 tools
Image
Compress, resize, and convert images instantly.
Compress ImageResize ImagePNG to JPG+16 more
23 tools
Text & Code
Format JSON, count words, encode/decode Base64, and more.
JSON FormatterWord CounterBase64 Encode/Decode+20 more
11 tools
Convert
Convert between CSV, JSON, YAML, XML, and other formats.
CSV to JSONYAML ↔ JSONJSON to CSV+8 more
14 tools
Generator
Generate QR codes, color palettes, and more.
QR Code GeneratorColor ConverterUUID Generator+11 more
16 tools
Calculator
Percentage, BMI, mortgage, loan, and other calculators.
Percentage CalculatorBMI CalculatorAge Calculator+13 more
15 tools
Developer
Regex tester, URL encoder, CSS generators, and more.
Regex TesterTimestamp ConverterJSON to TypeScript+12 more
14 tools
Utility
Stopwatch, timer, unit converters, and everyday tools.
Temperature ConverterLength ConverterWeight Converter+11 more

Tool Categories · 121

JustUse.me is a free, privacy-first online toolbox with 120+ browser-based tools for everyday file tasks. Every tool runs entirely in your browser using WebAssembly and Canvas APIs — your files are never uploaded to any server. No account required, no watermarks, no hidden fees.

PDF

9— Merge, split, compress, and convert PDFs online for free.

Image

19— Compress, resize, and convert images instantly.

Text & Code

23— Format JSON, count words, encode/decode Base64, and more.

Convert

11— Convert between CSV, JSON, YAML, XML, and other formats.

Generator

14— Generate QR codes, color palettes, and more.

Calculator

16— Percentage, BMI, mortgage, loan, and other calculators.

Developer

15— Regex tester, URL encoder, CSS generators, and more.

Utility

14— Stopwatch, timer, unit converters, and everyday tools.

Common questions

Is JustUse.me really free?

Yes. 120+ tools, no caps, no watermarks, no sign-up. Support is optional.

Are my files uploaded?

Never. Everything runs client-side in your browser. Your files don't leave your device.

Does it work offline?

After the first load, most tools work offline — they're pure JavaScript in your tab.

What languages are supported?

English, Simplified Chinese, and Traditional Chinese. More on the way.