Your data never leaves your device

Everything in your own browser

Converting, deduplicating, comparing, counting, sorting and making QR codes, barcodes and passwords: it all happens in your browser, on this device. Whatever you paste or open doesn’t go to a server of ours or anyone else’s. Rekenblad doesn’t even have a server that could receive it: the site technically allows no outgoing connections.

What Rekenblad does fetch

Rekenblad only loads the parts of a tool when you open that tool, always from its own address, such as the part that reads and writes Excel files. That’s fetching, never sending.

Passwords

A password or passphrase that Rekenblad makes, and a Wi-Fi password you put in a QR code, only exist in your browser while the page is open. Rekenblad doesn’t keep them.

What your browser remembers

Only your preferences: light or dark, your language and your Reading aids settings. No text and no files.

What you send on yourself

Whatever Rekenblad makes is an ordinary file in your downloads or text on your clipboard. If you send it on, it goes through your email or your storage, and their rules apply.

Technical logs

Like every web server, our hosting provider keeps short technical logs (such as IP address and time of a page visit) to keep the site running safely. They contain no text or files. We don’t use those logs to track visitors.

Questions

Rekenblad is a free tool from nealvdv. Have a question about your privacy? Email contact@nealvdv.be.

Libraries used

Rekenblad runs in your browser with these open libraries. Thanks to their makers. Each licence is available in full below.

• SheetJS Community Edition 0.20.3 (Apache-2.0): licence text
• jsdiff 9 (BSD-3-Clause): licence text
• node-qrcode 1.5 (MIT): licence text
• Tabler Icons (MIT): licence text