All Developer Utilities
Browse the complete catalog of 98 browser-first developer utilities. Run entirely in your browser with zero data tracking.
Validate JSON syntax, inspect structure, and diagnose syntax errors with line and column diagnostics.
Compress and minify JSON data by stripping whitespace and indentation while preserving string values.
Convert bi-directionally between JSON and YAML with strict alias and cycle protection, custom indentation, and swap support.
Encode and decode URL components, query parameters, and special characters using RFC 3986 percent-encoding or form-urlencoded format.
Decode and inspect JSON Web Token (JWT) headers, payloads, and claims locally in browser memory without signature verification.
Generate cryptographically secure RFC 4122 Version 4 UUIDs in bulk with custom casing, hyphens, and wrapper formatting.
Generate cryptographic hashes and message digests including SHA-256, SHA-512, SHA-384, SHA-1, and MD5 for text payloads.
Compare two text files, code snippets, or configuration payloads line-by-line, word-by-word, or as a unified patch.
Test, match, and replace regular expressions with real-time capture group extraction and flag configuration.
Parse cron expressions into human-readable descriptions, inspect schedule fields, and compute upcoming execution dates.
Convert curl commands into executable code for JavaScript (fetch), Python (requests), Node.js (axios), Go, and PHP.
Format, indent, prettify, or minify XML documents with customizable indentation, comment preservation, and self-closing tags.
Decompose, inspect, and analyze URLs into protocol, host, port, path segments, query parameters, and hash fragments.
Parse URL query strings into formatted JSON objects, or serialize structured JSON objects back into configurable query strings.
Convert text, identifiers, and variables between camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, Title Case, dot.case, and path/case.
Convert bi-directionally between JSON arrays of objects and tabular CSV/TSV data with delimiter options, header validation, and spreadsheet formula injection protection.
Convert bi-directionally between dotenv configuration files and flat JSON objects with prototype pollution protection, quote escaping, and sensitive memory-only handling.
Convert Unix timestamps and date strings between epoch seconds, milliseconds, ISO 8601, UTC representations, and selected display timezones.
Render pasted code as a styled SVG snapshot with syntax highlighting, themes, window frames, and gradient backgrounds for blogs and docs.
Generate cryptographically secure passwords locally with configurable character sets.
Format and beautify INI files, .properties files, and system configurations locally in your browser.
Convert bi-directionally between XML and JSON documents with configurable indentation, attribute prefixes, text node handling, and local XXE protection.
Convert bi-directionally between XML lists and tabular CSV data with custom delimiters, header extraction, and spreadsheet formula injection protection.
Convert bi-directionally between YAML configuration files and XML documents with custom indentation, root tag wrapping, and client-side XXE security.
Convert bi-directionally between TOML configuration files and JSON documents with indentation options, recursive key sorting, and local browser execution.
Convert bi-directionally between JSON arrays and line-delimited JSON (JSON Lines / NDJSON) with custom indentation and empty line handling.
Sort JSON object keys alphabetically in ascending or descending order, with optional case sensitivity, recursive sorting, and array element sorting.
Escape raw text and JSON strings for programming literals, or unescape escaped strings back to readable text.
Automatically fix malformed JSON: repairs single quotes, unquoted keys, trailing commas, Python constants (True/False/None), JavaScript comments, and missing brackets.
Convert bi-directionally between CSV (Comma-Separated Values) and TSV (Tab-Separated Values) with delimiter flexibility, quote handling, and spreadsheet formula injection protection.
Inspect, validate, and preview CSV and TSV tabular data. Auto-detects delimiters, diagnoses malformed rows or ragged columns, and reports row/column statistics.
Convert bi-directionally between CSV/TSV spreadsheets and semantic HTML <table> markup with custom class attributes, header cells, and spreadsheet injection protection.
Convert bi-directionally between CSV/TSV data and GitHub Flavored Markdown (GFM) pipe tables with column alignment, pretty padding, and spreadsheet injection protection.
Encode UTF-8 text to RFC 4648 Base32, extended hex, or Crockford alphabet and decode Base32 back to readable text.
Encode UTF-8 text to Base58 and decode Base58 strings back to readable text using Bitcoin/IPFS, Ripple, or Flickr alphabets.
Encode text to hexadecimal (Base16) byte strings and decode hex bytes back to UTF-8 text with customizable delimiters and prefixes.
Convert text to 8-bit binary strings (Base2) and decode binary byte representations back to UTF-8 text.
Convert text characters into ASCII/Unicode code points, hex, decimal, or escape sequences, and translate code points back to text.
Inspect the UTF-8 byte encoding, binary bits, hex values, and code points for every character in your text.
Encode reserved HTML characters and symbols into named or numeric HTML entities, and decode entities back to plain text.
Encode and decode the 5 predefined XML entities (&, <, >, ", ') and numeric character references.
Escape and unescape special characters, quotes, and control sequences for JavaScript, JSON, C/C++, Python, SQL, and regex literals.
Compress raw text into Gzip, Deflate, or Deflate-Raw byte streams (encoded in Base64 or Hex), or decompress compressed payloads back to plain text.
Calculate non-cryptographic checksums and cyclic redundancy checks including CRC-32, CRC-32C, CRC-16, Adler-32, and BSD sum for data integrity verification.
Sort lines of text alphabetically, numerically, by string length, deduplicate lines, reverse line order, or shuffle randomly.
Clean extra whitespace, strip blank lines, collapse consecutive spaces, and convert between multi-line lists and single-line text.
Find and replace text patterns using plain text matching or regular expressions, with case-sensitivity, whole-word matching, and count statistics.
Count words, characters (with and without spaces), sentences, paragraphs, lines, reading time, speaking time, and word frequencies.
Convert article headlines, titles, and text strings into clean, SEO-friendly URL slugs with customizable separators and transliteration.
Generate placeholder Latin dummy text in paragraphs, sentences, words, or lists with optional HTML tag formatting.
Calculate IPv4 and IPv6 subnet ranges, network addresses, broadcast addresses, subnet masks, and usable host counts.
Convert IPv4 addresses between dotted-decimal, 32-bit integer, hexadecimal, binary, and octal notations.
Parse, analyze, and format raw HTTP request and response headers with security, caching, and CORS diagnostics.
Look up, filter, and inspect HTTP response status codes, caching semantics, and RFC specifications.
Convert text, SVG markup, HTML, and JSON into inline RFC 2397 Data URIs, or decode existing Data URIs back to raw content.
Generate, parse, and validate standards-compliant robots.txt files with crawler directives, sitemaps, and RFC 9309 audits.
Generate, validate, and format standard sitemaps.org XML sitemaps with priorities, change frequencies, and URL audits.
Generate, parse, and audit HTML head meta tags, Open Graph (og:*), Twitter Cards, and canonical tags for social sharing and SEO.
Lookup standard IANA MIME types, Content-Type headers, and corresponding file extensions for web assets and APIs.
Parse User-Agent strings to extract browser, engine, OS, device, and architecture details, and inspect modern Client Hints.
Safely join URL path segments, deduplicate slashes, resolve relative path dots (../), and normalize clean API endpoints.
Compute Hash-based Message Authentication Codes (HMAC) using SHA-256, SHA-512, SHA-384, SHA-1, and MD5 with custom secret keys.
Generate and decode HTTP Basic Authentication Authorization headers (RFC 7617) and Base64 tokens from username and password.
Generate cryptographically secure random tokens, secret keys, API keys, and passwords in hex, base64, base64url, alphanumeric, or numeric formats.
Generate and inspect time-ordered, sortable RFC 9562 Version 7 UUIDs with embedded millisecond timestamps and high-entropy random bits.
Parse, decode, and inspect X.509 certificates, PEM files, and CSRs client-side: extract subject, issuer, validity dates, SANs, key algorithm, and fingerprints without online trust claims.
Compute and verify cryptographic file hashes and checksums (SHA-256, SHA-512, SHA-384, SHA-1, MD5, CRC-32) from Data URIs, Base64, Hex, or text entirely client-side.
Convert colors across HEX, RGB, HSL, HSV, CMYK, and CSS color strings with alpha channel and WCAG luminance support.
Generate harmonious color palettes (monochromatic, analogous, complementary, triadic) and check WCAG 2.1 AA/AAA contrast ratios against background colors.
Convert CSS typography and layout units between pixels (px), rem, em, points (pt), and percent (%) with configurable root and parent font sizes.
Convert integers and arbitrary-precision numbers between binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and custom radix bases (2–36).
Convert physical measurements across metric and imperial systems including length, mass/weight, area, volume, temperature, and speed.
Convert digital data storage sizes between bytes, decimal SI units (KB, MB, GB, TB, PB), and binary IEC units (KiB, MiB, GiB, TiB, PiB).
Calculate bitwise logic (AND, OR, XOR, NOT, NAND, NOR, XNOR, shifts) across 8/16/32/64-bit widths with binary visualizer and truth tables.
Two-way converter between standard Roman numerals (I, V, X, L, C, D, M) and Arabic integers with subtractive notation and strict syntax validation.
Generate, format, and align GitHub Flavored Markdown (GFM) tables from CSV, TSV, or spreadsheet data with column alignment and compact mode.
Convert CSV, TSV, or tabular data into accessible HTML <table> markup with <thead>, <tbody>, CSS styling, and responsive wrappers.
Create, inspect, and export linear, radial, and conic CSS gradients with multi-stop color controls, angle presets, and Tailwind CSS outputs.
Design, inspect, and export multi-layer CSS box-shadow and drop-shadow declarations with blur, spread, inset, and Tailwind CSS arbitrary classes.
Design uniform, per-corner, or full 8-value elliptical CSS border-radius shapes with Tailwind CSS classes and JSON models.
View, format, sanitize, and inspect SVG vector markup with security filtering, minification, Data URI generation, and metadata extraction.