Every tool runs 100% in your browser. No sign-up, no data collection, no rate limits.
Format, beautify, validate, and minify JSON. Detects BigInt precision issues, duplicate keys, and JSONC comments.
Compare two JSON objects side-by-side and highlight differences.
Convert JSON to TOON (Token-Oriented Object Notation) to reduce LLM prompt token usage by ~40%. Lossless and instant.
Validate JSON data against a JSON Schema in your browser. See detailed error paths and messages. Supports draft-07 and 2020-12.
Convert TOON (Token-Oriented Object Notation) back to JSON. Decode a compact LLM response into standard JSON. Lossless and instant.
Encode or decode Base64 strings instantly. Supports standard and URL-safe variants.
Encode or decode URL components and query strings.
Convert PNG, JPG, GIF, WebP, SVG, and BMP to Base64. Output as raw string, CSS background-image, or HTML <img> tag. Drag & drop.
Look up Unicode code points, HTML entities, hex values, and UTF-8 bytes for any character or text. Supports emoji.
Translate binary code to text and text to binary. Reads UTF-8, 7-bit ASCII, hex and decimal bytes, with a per-character breakdown. Runs in your browser.
Decode and inspect JWT tokens. View header, payload, and signature without a secret.
Generate and verify JWT tokens with HS256 or RS256 signing.
Generate RFC-4122 UUIDs (v1, v4, v5) and ULIDs instantly.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any string.
Generate QR codes for URLs, text, WiFi credentials, emails, and vCards. Custom colors, PNG/SVG download.
Generate cryptographically secure passwords and EFF-style passphrases using the Web Crypto API.
Generate placeholder text by paragraph, sentence, or word count. Classic and authentic Cicero Latin variants.
Build MCP server configs for Claude Desktop and Claude Code visually. Add presets, set env vars, copy JSON instantly.
Turn any code snippet into a beautiful screenshot. Pick a theme, font, and background, then download a shareable PNG. Runs fully in your browser.
Generate linear, radial, and conic CSS gradients and layered box-shadows with a live preview. Copy ready-to-use CSS.
Generate Discord timestamp tags in all 9 styles, including relative countdowns. Every reader sees the time in their own time zone. Live preview, one-click copy.
Convert Unix timestamps to human-readable dates and vice versa.
Convert colors between HEX, RGB, and HSL formats instantly.
Convert numbers between binary, octal, decimal, and hexadecimal.
Parse YAML into JSON in your browser. Handles anchors, block scalars, and multi-line strings. Powered by js-yaml.
Convert CSV to JSON in your browser. Parses spreadsheet exports into typed JSON with custom delimiters and header rows.
Convert TOML to JSON. Reads Cargo.toml, pyproject.toml, and Hugo config files with full TOML type support.
Check WCAG 2.1 contrast ratios for AA and AAA, normal and large text. Live preview plus accessible color suggestions.
Read a .env file as JSON or YAML. Handles comments, quotes, export prefixes, and nested keys. Runs in your browser.
Convert JSON to YAML instantly. Produces clean, indentation-based YAML for Kubernetes manifests, Docker Compose, and CI workflow files.
Convert a JSON array to CSV in your browser. Infers column headers from every key across your records. Spreadsheet-ready output.
Convert JSON to TOML in your browser. Produces valid Cargo.toml, pyproject.toml, and Hugo config syntax with proper table nesting.
Convert a JSON or YAML config object into a .env file. Flattens nested keys, quotes values that need it, and outputs valid dotenv syntax.
Test and debug regular expressions with real-time match highlighting.
Compare two text blocks and highlight line-by-line differences.
Write and preview Markdown with live rendering.
Autosaving plain-text editor with word count, Find & Replace, and .txt download. Nothing leaves your browser.
Real-time words, characters, sentences, paragraphs, reading time, and keyword density analysis.
Convert HTML or pasted rich text to GitHub Flavored Markdown. Tables, strikethrough, task lists supported.
Convert text to camelCase, PascalCase, snake_case, SCREAMING_SNAKE, kebab-case, Title Case, and 3 more formats. All 9 at once.
Complete HTTP status code reference with descriptions. Search and filter all 1xx, 2xx, 3xx, 4xx, and 5xx codes.
Count tokens for GPT-5.6, Claude, Gemini, DeepSeek, and GLM. See context window usage and estimated API cost.
Build and validate cron expressions with a human-readable description.
Format and beautify SQL queries for MySQL, PostgreSQL, SQLite, T-SQL, and Standard SQL. Keyword casing control.
Format, beautify, and minify XML online. Validates XML structure and supports custom indentation.
Format, beautify, and minify CSS code online. Shows byte reduction percentage on minify.
Optimize and minify SVG in your browser. Strip metadata, round precision, and export as SVG, data URI, or Base64. See bytes saved.
View HTML online with a live preview at desktop, tablet or phone width. Format and beautify messy or minified HTML. Remote images and scripts stay blocked.
Calculate the network, broadcast, host range, subnet mask and wildcard for any IPv4 or IPv6 CIDR block. Split a network into smaller subnets.
Find the vendor of any MAC address or OUI from the IEEE registry. Bulk lookup from arp output, randomized address detection, and every notation.
