Short and plain.

Catail

What it keeps on your computer

• Settings: in %APPDATA%\Catail\settings.json.
• Queued images: in the temp folder (%TEMP%\catail\). They are deleted when the app closes; anything left behind is cleared the next time it starts.
• Queued files: only the file's path is kept. Catail never copies, changes or deletes the original.

The clipboard

Catail only watches the clipboard while text mode is on; what you copy then joins the queue. Copies that password managers mark as "keep out of history" are skipped. After pasting, whatever was on your clipboard before is put back.

The two moments it goes online

• Checking for a new version: at startup it reads the release file on GitHub. That's an ordinary download request; nothing about you is sent, though, as with any connection, GitHub sees your IP address.
• Translation: only when you press Translate is the text you picked sent to Google Translate. If you don't press it, no text leaves your computer.

Apart from these, Catail doesn't go online. Text recognition (OCR) uses Windows' own engine, and QR codes are read on your device. If you choose to open the address in a QR code, your browser opens it; Catail doesn't visit it itself.

Catail Convert

What it keeps on your computer

• Settings: in the app's own browser storage (%LOCALAPPDATA%\com.catail.convert\).
• The files you convert: Catail Convert never changes, deletes or overwrites the original. The result is written as a new file next to it or into the folder you chose.
• Clipboard content: a picture or text added with Ctrl+V waits in the temp folder (%TEMP%\catail-convert\) and is deleted when the app closes. The clipboard is read only when you press Ctrl+V in the app.

How it talks to Catail-SS

With both apps installed, they find each other through a small folder on your computer (%LOCALAPPDATA%\Catail Studio\bridge\): their versions, the chosen cat and language, and the paths and texts of what is in Catail-SS's queue. The folder stays in your own user account; nothing between them goes online.

The one moment it goes online

Converting is fully offline. Audio and video need FFmpeg, which doesn't ship with the app. Catail Convert asks first; only if you press Download and install does it download FFmpeg's official static Windows build (gyan.dev, linked from ffmpeg.org), check it against its SHA-256 and put it in %APPDATA%\com.catail.convert\ffmpeg\. Nothing about you and none of your files are sent; as with any connection, that server sees your IP address. If FFmpeg is already on your computer, nothing is downloaded.

This website

• Cookies: none. No visitor counter, ads or tracking code either.
• What it keeps in your browser: the cat you picked, plus the release list and the GitHub counts (a cache of a few minutes, to make fewer requests). All of it stays in your browser's own storage; none is sent to us.
• Outside addresses it connects to: Google Fonts for the typefaces; GitHub for the release list and the download and star counts. Download buttons fetch the file straight from GitHub.
• Server logs: like any website, the server hosting this site may keep technical access logs (IP address, time, page asked for). We don't use them for ads or profiling.

Questions and changes

If this text changes, we update its date and say so in the release notes. If something's wrong, tell us on GitHub. All the code is open, so you can check all of the above yourself.