Privacy policy
The short version: we never receive what you compare. It's processed on your device and never uploaded or stored.
What you compare
Text, documents, spreadsheets, images and folders you compare with Diffspot are processed entirely in your browser. They are not sent to Diffspot, our host, our ad partners or anyone else, and we can't see or recover them. How Diffspot works describes the technology and how to verify this.
If you create a share link, the compared texts are packed into the link itself (after the #). That part of a URL isn't sent to our servers, but anyone you give the link to can read the texts, and the link may be stored wherever you paste it (chat apps, email, browser history).
Preferences stored on your device
Diffspot saves display preferences, such as the view mode, wrapping, ignore options and theme, in your browser's local storage so they're remembered next time. They never leave your device, and you can clear them by clearing site data for diffspot.io. The app also uses your browser's cache and a service worker so it loads fast and works offline; these store the app's own files, never your content.
Diffspot's pages don't set cookies. (Our host may set a strictly necessary security cookie if it detects suspicious traffic.)
Hosting
The site is served by Cloudflare. Like any web host, Cloudflare processes technical request data (such as IP address, browser user agent and the page requested) to deliver pages and protect against abuse. We don't use this data to identify you, and Diffspot runs no analytics or tracking scripts on its pages.
Advertising
Diffspot is free because it shows ads. Ads are loaded in separate frames from ads.diffspot.io. Browsers isolate these frames from the page, so ad code can't read anything you type, paste, open or compare.
Inside those frames, our advertising partners (such as Google) may use cookies, device identifiers and similar technologies to show ads, measure them and prevent fraud. Depending on your region and settings, ads may be personalized based on your browsing on other sites. The ad frame is told which page of Diffspot it appears on (for example, /pdf-compare), nothing more.
- Learn how Google uses information from sites that use its services: policies.google.com/technologies/partner-sites.
- Control or turn off personalized Google ads: adssettings.google.com. Other networks honor the opt-outs at optout.aboutads.info and youronlinechoices.eu.
- For visitors in the European Economic Area, the UK and Switzerland, Diffspot requests only non-personalized ads.
Blocking the ad frames doesn't affect the tool in any way.
Children
Diffspot is a general-purpose tool not directed at children under 13, and we don't knowingly collect personal information from anyone.
Changes
If this policy changes, we'll update this page and the date above. The core promise won't change: what you compare stays on your device.