Developer Tools
HAR Viewer / Sanitizer
HAR Viewer / Sanitizer is a free browser-based developer tools for quick everyday work. Use it without registration, with instructions, examples, FAQ, and related tools on the same page.
Tool action area
HAR 可能包含 Cookie、Authorization、query token 與 request body；清理後仍要人工檢查再分享。
How to Use
1
Enter or paste the content for HAR Viewer / Sanitizer.
2
Run the browser-side conversion, validation, or calculation.
3
Review the result and copy it when needed.
Common Uses
- Handle a quick HAR Viewer / Sanitizer task without signing in.
- Prepare data for development, documents, or daily work.
- Check results locally before sharing or publishing.
FAQ
Do I need to sign in to use this tool?
No. Day Toolbox tools are available directly in the browser without registration or login.
Is my input uploaded to a server?
No. Ready tools are designed to run in your browser and do not send the content to a custom backend.
What can I use HAR Viewer / Sanitizer for?
HAR Viewer / Sanitizer is useful for quick browser-side tasks where you want a clear result without creating an account or sending data to a custom backend.