117 free tools that run in your browser
Format code, convert data, compress images, generate passwords and QR codes. Nothing is uploaded to a server, so your files and text never leave your device.
- No signup
- No upload
- No watermark
- Works offline once loaded
Most used
Ranked by unique visitors over the last 30 days. Counted without cookies.
All categories
Text tools
Count, clean, convert and rewrite text right in the browser.
14 toolsEncoding
Base64, URL, HTML entities, punycode and other encodings.
14 toolsData converters
Move data between JSON, CSV, XML, Markdown and HTML.
6 toolsCode tools
Format, minify and validate CSS, HTML, JavaScript, JSON and SQL.
12 toolsHashes and passwords
Hashes, password generation and strength checks, all offline.
7 toolsImage tools
Compress, resize and convert images without uploading them.
12 toolsColor tools
Convert HEX, RGB, HSL and check contrast against WCAG.
3 toolsConverters and calculators
Length, weight, temperature, speed, storage and everyday math.
7 toolsTime and date
Timestamps, world clock, stopwatch and countdown.
5 toolsWebmaster tools
Robots.txt, htaccess, meta tags and social cards with a preview.
6 toolsNetwork tools
DNS, whois, SSL, headers and other lookups.
17 toolsGenerators and other
QR codes, UUIDs, random numbers and small everyday helpers.
14 toolsWhy everything runs in your browser
Your data stays yours
A password generated on a server is a password that server has seen. Here the work happens on your device, and the page never sends a request containing what you typed.
No waiting, no limits
There is no upload, no queue and no size cap set by someone else. Compressing twenty images is as fast as your machine, not as fast as a shared server.
Fast pages
Every page here is static HTML. The interactive part loads only where it is needed, which is why tools open immediately rather than after a spinner.