Data Tools That Respect Your Privacy
DataFormatHub is a free collection of browser-based tools for developers and data professionals. Convert, validate, and transform data formats — all without uploading a single byte to any server.
Our Mission
We believe developer tools should be free, fast, and private. Too many online converters upload your data to their servers, require registration, or hide features behind paywalls.
DataFormatHub takes a different approach. Every tool runs entirely in your browser using modern JavaScript. This means:
- Your sensitive data (API keys, credentials, personal info) stays on your device
- Instant conversions with no network latency
- Tools work offline once the page is loaded
What We Stand For
Privacy First
All processing happens in your browser. Your data never leaves your device — we don't upload, store, or even see it.
Instant & Free
No signup, no paywalls, no limits. Just paste your data and get instant results. Works offline once loaded.
Universal Access
Works on any modern browser, any device. No installation required — bookmark it and use it anywhere.
Developer Focused
Built by developers, for developers. We understand the daily data wrangling challenges and build tools that solve them.
What We Offer
Data Converters
JSON ↔ CSV, XML ↔ JSON, YAML ↔ JSON, Excel, vCard, and more. Convert between 15+ data formats instantly.
Data Visualizers
Explore JSON trees, view CSV data, create charts from spreadsheets. Understand your data at a glance.
Developer Utilities
Base64, URL encoding, UUID generator, hash tools, regex tester, and more essential dev utilities.
AI Tools
Token counter for GPT/Claude/Gemini, API key validator, and other AI development helpers.
Get In Touch
Have suggestions, found a bug, or want to request a new tool? We'd love to hear from you.