Quick tools for your browser
Free — no sign-up, no hassle.
Calculator
Add, subtract, multiply and divide in a flash. Works with your keyboard too.
Notepad
Notes that stay in your browser — your data, never on a server.
Redirect Follower
Follow HTTP redirects step by step — status code, Location and response time per hop.
Data Inspector
Encode/decode Base64 and compute MD5, SHA-1 and SHA-256 hashes of files — fully offline.
Password Generator
Generate strong passwords or passphrases — all in your browser, nothing leaves your device.
Markdown Converter
Write Markdown and download it as HTML, a Word document or plain text — fully offline.
Text Diff
Compare two texts and see exactly what changed. Line, word and character mode.
Text Meter
Paste a text and see what’s in it: length, reading time, sentence length, readability, repetition, filler words and a checklist to go through.
What is my IP?
See your public IP address, location and ISP. Offline GeoIP — no tracking, no external calls.
Is it down?
Site not working? See whether it’s down for everyone or just for you — step by step: DNS, connection, certificate and page.
Hosting Checker
Check who hosts a domain: IP address, country, ISP, SSL certificate and DNS records, with a grade for digital sovereignty.
Email Test
Test a domain’s email: IPv6, DNSSEC, SPF, DKIM and DMARC, STARTTLS with DANE and route authorisation — with the evidence for each part.
Leak Test
See what a website leaks: trackers before consent, cookies, transfers outside the EEA, keylogging and security.txt.
No ads, no trackers, no profile of you. The calculator, the notepad, the password generator and the other text tools run entirely in your browser: what you type there never leaves your device. The Leak Test, the Hosting Checker, the Email Test and “Is it down?” can’t work that way — they measure from the server, and the first three keep their reports. Those reports are about the domain that was measured, not about you, but they are public: anyone who checks the same address sees the same result. The privacy statement explains it per tool.