Is my text uploaded anywhere?

No. Diffly compares the two texts with JavaScript in your browser. Nothing you paste or open is sent to ToolBookly or anyone else.

How can a share link work without a server?

Both texts are compressed and placed in the link after the # sign. Browsers never send that part of a URL to a server, so the person who opens the link decodes the diff on their own device.

Do Diffly share links expire?

No. There is no database entry to delete, so a link keeps working as long as the link itself exists.

Yes. Open or drop any plain-text file (code, CSV, JSON, Markdown, logs) up to 5 MB on either side. The file is read locally.

Yes. Free forever, no signup, no limits on how often you compare.

Terms of Service

Last Updated: October 5, 2026

Service Description

Diffly is a free client-side text and file diff checker on ToolBookly. All processing happens in your browser. ToolBookly provides this service "as is" without warranties.

Limitations

ToolBookly is not liable for any damages arising from use of this tool. Users are responsible for their own content and for complying with applicable law. Share links contain the compared texts; anyone who has a link can read them, so share links only with people you trust.

Contact

support@toolbookly.com