Free Developer Tools
Encode, format and convert, handy utilities for developers.
38 free developer tools, no sign-up, no watermarks.
Cron Expression Generator
Build a cron expression, explain it and preview next runs.
Available nowJSON to YAML Converter
Convert JSON to YAML and YAML to JSON in your browser.
Available nowSQL Formatter
Format and beautify SQL queries for readability.
Available nowHTML Minifier
Minify HTML by removing comments and extra whitespace.
Available nowCSS Minifier
Minify CSS by stripping comments and whitespace.
Available nowJavaScript Minifier
Basic JavaScript minifier to shrink JS for the web.
Available nowURL Parser
Break a URL into protocol, host, path, query and hash.
Available nowColor Picker
Pick a color and get HEX, RGB and HSL codes.
Available nowRandom String Generator
Generate secure random strings, tokens and IDs.
Available nowColor Converter
Convert colours between HEX, RGB and HSL with a picker.
Available nowBase64 Encode / Decode
Encode text to Base64 or decode it back, UTF-8 safe.
Available nowJSON Formatter
Beautify, validate and minify JSON in your browser.
Available nowURL Encode / Decode
Percent-encode text for safe use in URLs, or decode it back.
Available nowHash Generator (SHA)
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.
Available nowUUID Generator
Generate version-4 UUIDs (GUIDs) in bulk with one-click copy.
Available nowJWT Decoder
Decode a JWT's header and payload (no signature check).
Available nowHTML Entity Encode / Decode
Encode characters to HTML entities or decode them back.
Available nowNumber Base Converter
Convert integers between binary, octal, decimal and hex.
Available nowUnix Timestamp Converter
Convert Unix timestamps to dates and back, both ways.
Available nowRegex Tester
Test a regex against text live, matches and capture groups.
Available nowImage to Base64
Convert an image to a Base64 data URI, with a CSS snippet.
Available nowText to Binary Translator
Convert text to 8-bit binary and back, UTF-8 safe.
Available nowCSS Box Shadow Generator
Build a CSS box-shadow with live preview and copy.
Available nowURL Slug Generator
Turn any title into a clean, lowercase, hyphenated slug.
Available nowCSS Gradient Generator
Build a linear or radial CSS gradient with live preview.
Available nowProgrammer Case Converter
camelCase, snake_case, kebab-case, CONSTANT and more.
Available nowPassword Strength Checker
Check password strength, entropy, rating and tips.
Available nowJSON to CSV / CSV to JSON
Convert JSON arrays to CSV and CSV back to JSON.
Available nowMeta Tag Generator
Generate SEO, Open Graph & Twitter Card meta tags.
Available nowUTM Link Builder
Build trackable campaign URLs with UTM parameters.
Available nowXML Formatter & Minifier
Beautify, validate and minify XML in your browser.
Available nowAspect Ratio Calculator
Resize keeping proportions; find the ratio like 16:9.
Available nowScientific Notation Converter
Convert numbers to/from scientific and E-notation.
Available nowColor Palette Generator
Tints, shades, complementary and analogous colours.
Available nowColor Contrast Checker
Check WCAG contrast ratio between two colors, AA/AAA badges and an accessible-color suggestion.
Available nowData Pipeline Builder
Chain Base64, hex, URL, ROT13/Caesar, case, hash and gzip steps into one live pipeline.
Available nowFake JSON Data Generator
Build a schema and generate realistic fake JSON test data, names, emails, dates, UUIDs and more.
Available nowBase32 Encode / Decode
Encode/decode Base32 (RFC 4648), UTF-8 safe.
Available now