Developer Tools
26 tools
Format and convert data; handle URL, Base64, Unicode, number bases and escaping; inspect JWTs, hashes and UUIDs; use regex, Cron, HTTP/MIME references and frontend helpers.
Hold to read the full description
Hash Generator & Checker
Generate hashes for text or a file and compare checksums.
UUID Generator
Generate UUIDs for database records, request tracking, and idempotency keys.
URL Encode/Decode
Encode or decode URL components and values using percent encoding.
URL Parser
Inspect a URL's components and preview changes to its structure.
Base64 Encode/Decode
Base64 for text and images.
JSON Escape/Unescape
Escape text for JSON strings or restore escaped content to readable text.
HTML Escape/Unescape
Escape special characters as HTML entities or decode character references.
Unicode Converter
Convert text to code points or decode numeric character tokens.
Unicode Normalizer
Normalize text into standard Unicode forms and optionally remove combining marks.
ASCII Converter
Convert text to numeric character codes or decode supported numeric tokens.
Base Converter
Convert nonnegative integers between binary, octal, decimal, and hexadecimal bases.
JSON Formatter & Validator
Format, validate, and minify JSON.
JSON Repair & Inspector
Repair malformed JSON, review warnings, and compare results.
JSON to TypeScript
Generate TypeScript interfaces and types from JSON samples.
JSON ↔ YAML Converter
Convert between JSON and YAML with validation and formatting controls.
JSON ↔ CSV Converter
Convert CSV, TSV, and JSON.
JWT Decoder
Decode JWT contents and inspect claims without verifying signatures.
JWT Signature Verifier
Verify JWT signatures with keys and check selected claims.
Regex Tester
Test JavaScript regular expressions, inspect matches, and preview replacements.
MIME Type Lookup
Look up media types by extension, filename, or type name.
HTTP Status Codes
Look up HTTP status codes, related headers, and caching guidance.
CSS Unit Converter
Convert CSS units using font sizes and viewport dimensions.
Color Converter
Convert color values between supported models and preview the results.
Lorem Generator
Generate Lorem Ipsum by paragraph count, word count, or length.
Cron Expression Parser
Validate cron expressions and preview upcoming execution times.
Cron Expression Generator
Build cron schedules and preview executions in a chosen time zone.