Developer Tools, Instantly.
25 free tools — fast, private, 100% in your browser.
Data & Formats
JSON Formatter & Validator
Pretty‑print, minify, validate JSON. Load from URL, paste, or file upload. JSONPath query support.
YAML ↔ JSON Converter
Convert between YAML and JSON with validation. Supports Kubernetes & CI/CD configs.
Timestamp / Epoch Converter
Convert Unix timestamps to human‑readable dates for multiple timezones and back.
CSV ↔ JSON Converter
Convert between CSV and JSON for APIs and data pipelines.
Env Config Parser
Convert .env files to JSON / YAML and back.
JSON → TypeScript
Generate TypeScript interfaces and types from any JSON payload.
Security & Auth
Text & Diff
Regex Tester
Live regex match highlighting, capture groups, and substitution with pre‑built examples.
Text Diff Viewer
Side‑by‑side or inline diff with syntax‑like highlighting for any text or code.
Text Case Converter
Convert text to camelCase, PascalCase, snake_case, kebab-case, UPPER, lower, and more.
Markdown Preview
Live Markdown editor with instant HTML preview. Supports GFM, tables, and code blocks.
Slug Generator
Turn any title or sentence into a clean, URL-friendly slug.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words.
Encoding
Base64 Encode / Decode
Encode and decode text and files (images) in the browser with preview.
URL Encoder / Decoder
Encode and decode URL components and query strings.
HTML Entity Encoder
Encode and decode HTML entities. Escape special characters for safe HTML output.
Number Base Converter
Convert numbers between binary, octal, decimal, hex, and arbitrary bases up to 36.
Generators
Hash Generator
Generate SHA‑256, SHA‑512, MD5, and other hashes client‑side for text or files.
UUID Generator
Generate v4 UUIDs instantly in the browser.
QR Code Generator
Turn any text or URL into a downloadable QR code.
Color Converter & Picker
Pick colors and convert between HEX, RGB, HSL, and CSS named colors with live preview.
Image ↔ Base64
Convert images to Base64 data URIs and back. Preview and download results.
100 % Client-Side
Nothing leaves your browser. Zero server calls.
Privacy-First
No tracking, no cookies, no data collection.
Works Offline
Static site — works after first load, even without internet.