Essential developer utilities for everyday coding tasks. Format JSON, encode/decode Base64, decode JWTs, test regex patterns, validate HTML, minify CSS, and much more — all in your browser.
Extract the color palette from any website — hex codes, RGB values, frequency analysis, and color categorization.
Validate, format, and minify JSON data with syntax highlighting and error detection.
Test regular expressions against text with match highlighting, groups, and flags support.
Decode JSON Web Tokens to inspect header, payload, and expiration without verification.
Encode or decode URL components. Use "text|||decode" format to decode.
Encode text to Base64 or decode Base64 to text. Use "text|||decode" to decode.
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and SHA3-256 hashes for any text.
Parse any User-Agent string to detect browser, OS, device type, and rendering engine.
Explain cron expressions in plain English with field breakdown and scheduling summary.
Convert colors between HEX, RGB, HSL formats with complementary color and contrast info.
Convert Markdown text to clean HTML with support for tables, code blocks, and lists.
Convert HTML markup to clean Markdown text preserving headings, links, and formatting.
Generate UUID v1, v4, and ULID identifiers in bulk. Enter a number (1-50) for count.
Convert YAML to JSON or JSON to YAML automatically. Format is auto-detected.
Convert between Unix timestamps and human-readable dates. Supports seconds, milliseconds, ISO 8601.
Send HTTP requests and inspect full response details including headers, body, status, and timing.
Analyze GitHub repos: stars, forks, languages, license, topics, activity, and more.
Analyze GitHub user profiles: repos, followers, top projects, bio, and contribution summary.
Analyze NPM packages: version, downloads, dependencies, maintainers, and release history.
Analyze Python packages from PyPI: version, dependencies, license, authors, and classifiers.
Analyze Docker Hub images: pulls, stars, tags, sizes, and update history.
Detect JavaScript frameworks and libraries: React, Next.js, Vue, Angular, Svelte, jQuery, and more.