Developer Utilities
Everyday utilities for developers.
.gitignore Generator
Build a .gitignore for any combination of languages and stacks.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Chmod Calculator
Toggle Linux file permission bits and read both numeric and symbolic chmod.
Color Code Converter
Convert HEX ↔ RGB ↔ HSL ↔ HSV in one step.
Cron Expression Parser
Parse a cron expression and translate it to plain English.
CSS Specificity Calculator
Calculate selector specificity as ID, class and element weights.
CSS → Tailwind Suggestions
Suggest Tailwind utility classes for a block of CSS.
Docker Run to Compose Converter
Convert a docker run command into a Docker Compose service.
Dockerfile Linter
Check Dockerfiles for common security and portability issues.
ENV File Parser / Validator
Validate .env syntax and inspect key/value pairs.
GraphQL Schema Formatter
Format and validate GraphQL schema definitions.
HOTP Generator
Generate counter-based one-time passwords using RFC 4226 HOTP.
HTML / CSS / JS Minifier
Minify HTML, CSS or JavaScript safely.
HTML Encoder / Decoder
Escape or unescape HTML entities like &, <, >.
HTTP Status Codes
Searchable reference of all standard HTTP status codes.
HTTP/2 Header Compression Explainer
Explain how HPACK compresses repeated HTTP/2 headers.
IP CIDR Notation Builder
Suggest CIDR notation for IP ranges.
JWT Decoder
Decode a JWT to inspect its header, payload and signature.
MIME Type Lookup
Look up the MIME type for a file extension (and vice versa).
package.json Generator
Generate a clean package.json from a small form.
Semantic Version Comparator
Compare semantic version numbers and see which is newer.
SVG Minifier
Minify SVG markup by removing extra whitespace.
Unix Timestamp Converter
Convert between Unix timestamps and human dates.
URL Encoder / Decoder
Percent-encode URLs or decode them back to readable form.
UUID Generator
Generate v4 / v7 UUIDs (GUIDs) with one click.