DataPad
Free Online Data Tools
No login. No upload. Data stays local.
Tools
Why DataPad
DataPad is a collection of free online data tools that run entirely in your browser. No signup, no upload, no data collection — your files stay on your device, always private and secure. Whether you need to edit CSV files, format JSON data, or work with other data formats, DataPad gives you professional-grade tools without compromising your privacy.
Features
- 100% client-side processing — data never leaves your device
- Multi-format support — CSV, JSON, and more coming soon
- Automatic local saving — your work persists across browser sessions
- File System Access API — edit files directly from your hard drive
- Full i18n support — 13 languages available
- Dark mode support — comfortable editing day and night
Privacy
Unlike most online tools, DataPad never sends your files to any server. All parsing, editing, formatting, and exporting happen directly in your web browser using JavaScript and WebAssembly. Your data is yours alone — we can't see it, access it, or store it. This makes DataPad safe for sensitive data like financial records, customer lists, and personal information.
Frequently Asked Questions
Is DataPad free?
Yes, DataPad is completely free to use. No signup, no subscription, no hidden fees.
Do I need to create an account?
No. You can start using DataPad immediately — no account, no installation, nothing to download.
Where is my data stored?
All your data is stored locally in your browser's IndexedDB storage. It never leaves your device.
What tools does DataPad offer?
Currently we offer CSV Editor and JSON Editor. More tools (Text Editor, YAML Editor, Markdown Editor) are planned.
Can I use DataPad offline?
Yes. Once the page has loaded, all tools work without an internet connection.
Is my data secure?
Absolutely. All processing is client-side. We don't have servers that store your data. Your files are never uploaded anywhere.