Developer Tools That
Respect Your Privacy
Free, fast, and secure. Every tool runs entirely in your browser — no server uploads, no data collection, no tracking. Ever.
100% Client-Side
All processing happens in your browser using JavaScript and WebAssembly. Zero network requests.
No Data Storage
We don't store, log, or transmit your data. Close the tab and it's gone. No cookies, no analytics.
Verifiably Safe
CSP headers block all external connections. Open DevTools and verify — zero outbound requests.
Why SafeTools?
In 2025, popular developer tools leaked 5GB of user data including API keys and credentials.
| Feature | SafeTools | Others |
|---|---|---|
| Data processing | Browser only | Server-side |
| Data sent to server | Never | Every request |
| Works offline | Yes | No |
| CSP verified | Yes | No |
| Tracking / Analytics | None | Multiple trackers |
Tools
All free. All private. All client-side.
JSON Formatter & Validator
Format, validate, and minify JSON with syntax highlighting. All processing happens in your browser.
Code Beautifier
Beautify and format code in JS, TS, CSS, HTML, JSON, YAML, Markdown, and GraphQL using Prettier.
Diff Checker
Compare two texts side-by-side or unified. Highlights additions, deletions, and changes at character, word, or line level.
Base64 Encoder / Decoder
Encode and decode Base64 strings and files. Supports text and binary file conversion.
URL Encoder / Decoder
Encode and decode URL components. Handles special characters, query strings, and full URLs.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files using the Web Crypto API.
JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, and signature with syntax highlighting.
Color Converter
Convert colors between HEX, RGB, HSL, and OKLCH formats with a live preview.
Regex Tester
Test regular expressions with real-time matching, capture group highlighting, and flag options.
Markdown Preview
Write and preview GitHub Flavored Markdown in real-time with syntax highlighting and export.
JSON to TypeScript
Generate TypeScript interfaces and types from JSON data automatically.
UUID Generator
Generate random UUIDs (v4) with bulk generation, formatting options, and one-click copy.
Timestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.
Text Case Converter
Convert text between camelCase, snake_case, PascalCase, kebab-case, UPPER CASE, and more.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words with customizable options.