Essential Tools for Modern Developers
Formatters, encoders, generators, and inspectors running directly in your browser memory. Never phones home, never leaks secrets.
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(36 total)JSON Formatter & Validator
Format, validate and minify JSON instantly — paste your JSON to beautify it, spot syntax errors, or compress it. Free, runs entirely in your browser.
/json-formatterJSON → Model
Convert JSON to C# classes or TypeScript interfaces with proper types.
/json-modelJSON to Zod Schema Generator
Convert JSON payloads into strongly-typed Zod schemas and TypeScript types.
/json-to-zodYAML <-> JSON Converter
Convert bidirectionally between YAML and JSON with real-time validation, key sorting, and custom indentation options.
/yaml-json-convertercURL to Code Converter
Convert cURL command line requests into clean JavaScript fetch, Node.js Axios, Python requests, Go, Rust, or PHP code snippets instantly.
/curl-converterSQL Formatter & Prettifier
Format, indent, validate, and minify SQL queries online. Capitalize keywords, format clauses, and clean up raw database queries.
/sql-formatterGraphQL Query Formatter
Format, prettify, validate, and minify GraphQL queries, mutations, and schemas online with custom indentation.
/graphql-formatterHMAC Generator & Calculator
Calculate HMAC-SHA256, HMAC-SHA512, and HMAC-SHA1 signatures for webhook verification and API security.
/hmac-generatorBase64
Encode plain text to Base64 or decode Base64 back to plain text.
/base64URL Encoder / Decoder
Encode or decode URLs and query string parameters instantly in your browser.
/url-encoderHTML Entity Encoder
Encode plain text into safe HTML entities and decode entity strings back into readable text in your browser.
/html-entityText Diff
Compare two text blocks line-by-line and highlight every change.
/text-diffUUID Generator
Generate RFC 4122 v4 UUIDs one at a time or in bulk up to 100.
/uuidJWT Decoder
Decode and inspect JSON Web Tokens — header, payload, expiry and more.
/jwtHTML Formatter
Format and minify HTML code for better readability or compactness.
/html-formatterPassword Generator
Generate strong, random passwords with customizable length and character sets.
/password-generatorLorem Ipsum Generator
Create placeholder paragraphs for wireframes, prototypes, content mocks, and layout testing.
/lorem-ipsum-generatorRegex Tester
Test regular expressions live against sample text with match highlighting.
/regexCase Converter
Convert text between uppercase, lowercase, camelCase, snake_case, kebab-case and more.
/case-converterSlug Generator
Convert titles and labels into clean kebab-case or snake_case slugs entirely in your browser.
/slug-generatorMarkdown Preview
Write Markdown on the left and see a live preview on the right.
/markdown-previewSHA-256 Hash Generator
Generate a SHA-256 hash from any input string instantly in your browser.
/sha256Word Counter
Count words, characters, sentences, paragraphs and reading time instantly.
/word-counterTimestamp Converter
Convert Unix timestamps, ISO dates, and local date strings instantly in your browser.
/timestamp-converterCron Expression Parser
Parse, explain, and calculate execution times for 5-part cron expressions.
/cron-parserQuery String Parser
Parse URL query strings into readable key/value pairs and JSON entirely in your browser.
/query-string-parserColor Converter
Convert HEX, RGB, and HSL values instantly with a live color preview. Free and fully client-side.
/color-converterHTTP Status Lookup
Search common HTTP response codes and their meanings while debugging APIs. Runs entirely in your browser.
/http-status-lookupMIME Type Lookup
Look up common file extensions, content types, and browser-facing MIME labels while working with uploads or headers.
/mime-type-lookupUser Agent Parser
Parse raw browser user agent strings into browser, engine, operating system, and device hints.
/user-agent-parserASCII Table
Browse ASCII characters in decimal, hex, and binary with search and quick copy actions.
/ascii-tableHash Comparator
Compare two hashes or checksums after trimming whitespace and normalizing letter case.
/hash-comparatorHTTP Header Parser
Parse raw HTTP request or response headers into structured rows and JSON.
/http-header-parserBasic Auth Header
Generate and decode HTTP Basic Authorization headers using username and password pairs.
/basic-auth-headerUnix Permissions Calculator
Convert read, write, and execute bits into chmod octal and symbolic permission strings.
/unix-permissions-calculatorLocal AI Text Assistant
Summarize text, surface keywords, detect action items, and estimate sentiment fully in JavaScript with no API.
/local-ai-text-assistant100% Client-Side Privacy
Your code, API keys, JSON strings, and secrets never leave your device. All parsing, hashing, and encoding happens entirely inside your browser JS runtime.
Zero Latency & Offline Ready
No network latency or server bottlenecks. Every transformation executes synchronously at native WebAssembly and JS V8 speeds.
No Ads, Trackers, or Bloat
Zero telemetry, no popups, no cookie banners, and no clutter. Just clean, developer-focused utilities designed for high productivity.