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Base64 Encoder / Decoder
Convert text to base64 and back, with full Unicode support.
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Generators
UUID Generator
Random RFC 4122 identifiers
Password Generator
Strong, configurable passwords
Lorem Ipsum
Placeholder filler text
QR Code
Encode text into a QR code
Data Faker
Fake names, emails, phones
Format
JSON Formatter
Pretty-print, minify and validate
Markdown Editor
Write and preview Markdown
Regex Tester
Test patterns with live highlights
Diff Viewer
Compare two blocks of text
CSV ↔ JSON
Convert between CSV and JSON
YAML ↔ JSON
Convert between YAML and JSON
HTML ↔ Markdown
Convert HTML to Markdown and back
Case Converter
camel · snake · kebab · slug
Word Counter
Words, characters, reading time
Encode
Base64
Encode and decode base64
URL Encoder
Percent-encode URL components
Hash Generator
SHA-1, 256, 384, 512
JWT Decoder
Inspect a JSON Web Token
HTML Entities
Encode/decode HTML entities
Number Base
bin · oct · dec · hex
Cookie Parser
Parse Cookie / Set-Cookie headers
Data
Color Converter
HEX · RGB · HSL · OKLCH
Palette + Contrast
Tints, shades, WCAG ratio
Timestamp
Epoch ↔ ISO ↔ human
Analog Clock
Pleasant clock, with timezones
Cron Expression
Humanize cron + next runs
IP / CIDR
Subnet math, range, mask
HTTP Status
Look up HTTP status codes
User-Agent
Parse a browser UA string
Image Compressor
Resize, compress, convert