Free tools for
everyday tasks

Infinite-scroll calendar with public holidays for all 27 EU countries, week numbers and dark mode.

Encode and decode URLs and query strings — component and full URL modes.

Compare two texts and see exactly what changed, line by line.

Test regular expressions live — matches highlighted, groups extracted.

Explain cron expressions in plain English and preview the next 10 run times.

Convert Unix timestamps to dates and back. Live current timestamp shown.

Count words, characters, sentences, paragraphs and reading time instantly.

Convert colors between HEX, RGB, HSL and CMYK with a color picker.

Convert length, weight, temperature, area, volume, speed, data and time units.

Convert between Roman numerals and Arabic numbers instantly.

Generate Lorem Ipsum placeholder text — paragraphs, sentences or words.

Generate QR codes for URLs, text, email, phone and WiFi. Download as PNG.

Live Markdown editor and previewer — write on the left, see the result on the right.

Look up any IP address — country, city, ISP, timezone and type. Shows your IP too.

Generate strong, truly random passwords — configurable length and character sets.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes — live as you type.

Encode and decode Base64 — standard and URL-safe. Live, in your browser.

Decode and inspect JSON Web Tokens — view claims, expiry and header instantly.

Encrypt and decrypt text with a passphrase using AES-256-GCM — runs entirely in your browser.

Inspect any domain's SSL certificate — expiry, issuer, SANs and chain validity.

Inspect HTTP response headers, audit security policies and follow redirect chains.

Detect server software, CDN, platform, IP address, SSL status and response time for any site.

WHOIS, MX, SPF, DMARC, TXT, NS, IP and more — live DNS queries for any domain.

Validate any email address with live MX lookup, disposable detection and typo suggestions.

Validate, format, search and compare JSON side by side. Runs entirely in your browser.

Mutual link exchange between websites. Free, voluntary — grow traffic together.