50+ Free Tools
Every tool a developer needs.
One site.
Regex testers, CSS generators, JSON formatters, encoders, converters — all free, all instant, no signup required.
🔍
Popular Tools
Regex⭐
Regex Tester
test and debug regular expressions with real-time matching
Try it →
Regex⭐
Regex Cheatsheet
browse a complete regex syntax reference with live examples
Try it →
Regex⭐
Common Regex Patterns
browse and copy 100+ common regex patterns for email, URL, phone, and more
Try it →
Regex⭐
Regex Explainer
break down a regex pattern into plain English with visual diagrams
Try it →
CSS⭐
CSS Gradient Generator
generate CSS linear, radial, and conic gradients visually
Try it →
CSS⭐
CSS Box Shadow Generator
build CSS box-shadow with live preview and copy-ready code
Try it →
CSS⭐
CSS Flexbox Generator
generate CSS flexbox layouts with a visual editor
Try it →
CSS⭐
CSS Grid Generator
generate CSS grid templates visually with live preview
Try it →
All 50 Tools
Every tool grouped by what it does. Click any name to open it.
Regex Tester
test and debug regular expressions with real-time matching
Regex Cheatsheet
browse a complete regex syntax reference with live examples
Regex to String Generator
generate matching strings from a regex pattern
Common Regex Patterns
browse and copy 100+ common regex patterns for email, URL, phone, and more
Regex Explainer
break down a regex pattern into plain English with visual diagrams
Regex Flags Explained
understand what regex flags g, i, m, s, u, y do with live examples
Lookahead & Lookbehind Guide
learn lookahead and lookbehind assertions with interactive examples
Named Capture Groups
learn and test named capture groups in regex
CSS Gradient Generator
generate CSS linear, radial, and conic gradients visually
CSS Box Shadow Generator
build CSS box-shadow with live preview and copy-ready code
CSS Border Radius Generator
create complex CSS border-radius shapes with per-corner controls
CSS Flexbox Generator
generate CSS flexbox layouts with a visual editor
CSS Grid Generator
generate CSS grid templates visually with live preview
CSS Animation Generator
build CSS keyframe animations with timeline editor and preview
CSS Filter Generator
combine CSS filter functions (blur, brightness, etc.) with live preview
CSS Clip Path Generator
draw CSS clip-path shapes and copy the generated code
CSS Variables Cheatsheet
complete CSS custom properties reference with examples
CSS Specificity Calculator
calculate and compare CSS selector specificity scores
JSON Formatter
format and prettify JSON with syntax highlighting
JSON Validator
validate JSON and show specific error locations
JSON Minifier
minify JSON by removing whitespace to reduce size
JSON to TypeScript
convert JSON objects to TypeScript interfaces automatically
JSONPath Tester
test JSONPath expressions against JSON data in real time
Color Converter
convert between HEX, RGB, HSL, HSB, and CMYK color formats
Color Contrast Checker
check WCAG color contrast ratio for accessibility compliance
Color Palette Generator
generate harmonious color palettes from a base color
Color Shades Generator
generate tints and shades of any color for design systems
Gradient Color Picker
extract the color at any point of a CSS gradient
Word Counter
count words, characters, sentences, and reading time in real time
Case Converter
convert text between camelCase, snake_case, kebab-case, and more
Lorem Ipsum Generator
generate Lorem Ipsum placeholder text in multiple formats
Text Diff Checker
find differences between two text blocks with color-coded highlighting
Markdown Previewer
preview Markdown with live side-by-side rendering
Slug Generator
convert any text to a URL-friendly slug
Base64 Encoder / Decoder
encode and decode Base64 strings and files in your browser
URL Encoder / Decoder
encode and decode URL percent-encoding for query strings and paths
HTML Entity Encoder
encode and decode HTML entities for safe HTML embedding
JWT Decoder
decode JWT tokens and inspect header, payload, and claims
Hash Generator
generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text
Unix Timestamp Converter
convert between Unix timestamps and human-readable dates
Timezone Converter
convert times between any two time zones instantly
Date Duration Calculator
calculate the duration between two dates or add/subtract time
Cron Expression Generator
build and explain cron schedule expressions with a visual builder
50 tools and counting
All tools run entirely in your browser. No data sent to any server. No account needed.
Browse All Tools →