Free tools, fast and private

Decode JWT header & payload, verify HS256/384/512.

Format, minify, and validate JSON with detailed errors.

Live-preview Markdown editor with GFM support.

Test JavaScript regex with live match highlighting.

Encode & decode Base64 text with full UTF-8 support.

encodeURIComponent / decodeURIComponent with batch mode.

Compare two text snippets side-by-side.

Translate cron expressions to plain English.

Format JS / HTML / CSS.

Obfuscate JavaScript code.

Convert curl commands into fetch / axios / Python.

Generate UUID v4 or v7 in bulk up to 1000 items.

Strong random passwords with entropy meter.

Generate placeholder text by paragraphs, sentences, or words.

Random numbers in a custom range.

Generate fake users, addresses, profiles.

Open Graph, Twitter Card and SEO meta tags.

UTM URL builder for marketing campaigns.

Generate QR codes with custom colors, ECC, logo.

HTML email signature builder.

Build a CV PDF from a simple form.

Spin a wheel to pick a random name.

Convert between HEX, RGB, HSL, HSV with live preview.

Unix timestamp ↔ ISO date.

MD5 / SHA-1 / SHA-256 / SHA-512.

Convert between CSV, JSON, and Excel.

Real-time currency exchange.

Calculate Body Mass Index.

Add/subtract dates, age calculator.

Percentage math made easy.

Compute aspect ratios for images & video.

WCAG contrast ratio checker.

Extract dominant colors from an image.

Decode QR codes from images or camera.

Add window chrome and gradients to screenshots.

Snap 4 frames from your webcam with effects.

Count words, characters, sentences, and reading time.

25/5 cycle with long break.

Stopwatch with lap times.

Calculate optimal sleep cycles.

Generate Gmail address variants.

Customize CSS scrollbar.

Public IP, geo location, ISP info.

Measure your words-per-minute.