Developer Utilities
Fast, private browser utilities for software developers: Base64 encode/decode, JSON prettify/minify, SHA-256 hashes, UUID generation, and timestamp calculations.
Encode characters into named HTML entities (©, €), decimal entities (©), or hex entities (©), and decode back to clean text.
Complete interactive Standard (0–127) and Extended (128–255) ASCII table with Decimal, Hexadecimal, Binary, Character, and Control codes.
Encode text to Base64 format and decode Base64 strings safely with full UTF-8 Unicode character support and zero server latency.
Encode query strings and URLs using percent-encoding (RFC 3986) or decode percent-encoded strings back to plain text.
Format, prettify, validate, and minify JSON data with instant error detection and line/column pointer indicators.
Convert text effortlessly between camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, Title Case, and Sentence case.
Generate cryptographically secure Version 4 UUIDs (GUIDs) and time-sortable ULIDs individually or in bulk.
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, CRC32, and HMAC signatures in real-time directly in your browser.
Real-time Unix epoch clock and bidirectional converter between epoch timestamps (seconds/milliseconds) and human-readable dates across world timezones.
Compare two text files or code blocks with side-by-side split and inline unified views, additions/deletions stats, and unified patch export.
Test and debug JavaScript regular expressions in real-time with live color match highlighting, capture group inspection, replacement mode, and cheat sheet.
Format, beautify, and indent HTML code or compress and minify HTML payloads with tag balancing and void element handling.
Format, clean, and beautify CSS stylesheets with custom indentation or minify CSS rules and media queries for production performance.
Generate W3C CSS.escape() compliant selectors for complex class names (Tailwind, colons, slashes), IDs starting with numbers, and CSS content strings.
Convert JavaScript strings and code into \uXXXX and ES6 \u{XXXXX} Unicode escape sequences, or unescape back into clean readable text.
Convert Hexadecimal to Decimal, Binary, Octal, and ASCII text with BigInt arbitrary precision support for arbitrarily large values.
Convert Binary (Base 2) to Decimal, Hexadecimal, Octal, and ASCII text with 8-bit byte grouping, bit counts, and BigInt precision.
Convert Decimal numbers to Binary, Hexadecimal, Octal, Roman Numerals, and byte representations with arbitrary precision BigInt.
Strict RFC 8259 JSON validation with line/column error pinpointing, syntax auto-fix (trailing commas, quotes), and structural metrics.
Format, clean, and indent XML, RSS, SVG, and SOAP payloads with custom indentation, well-formedness validation, and tag counting.
Dual-pane real-time GitHub Flavored Markdown (GFM) editor and visual previewer with instant HTML export and syntax styling.
Deconstruct any URL into protocol, origin, host, domain, port, path segments, query parameter table, and hash fragment.
Visual table editor to build, encode, and format URL query strings and API parameters with array notation (brackets, repeat, comma).
Decode and inspect JSON Web Tokens (JWT) 100% locally in your browser with expiration countdown, header/payload formatting, and signature inspection.
Convert colors between HEX, RGB, RGBA, HSL, HSLA, and CMYK with native color picker, 8-digit hex alpha, and WCAG accessibility contrast check.