Maskback is one file that runs in your browser. Names, emails and numbers become placeholders before the text goes to ChatGPT or Claude. The reply comes back with the real details in place. Nothing leaves your machine.
One purchase, no subscription. Team licence 79.00. Full refund within 14 days.
The free version below does the full redact and restore, up to 2,000 characters per pass. Paste anything with names, emails or numbers in it, press Redact, and read what comes out. Detection is pattern-based: read the output before you send it, every time.
Prefer it on its own page? Open the free version. You can turn off your connection after it loads; it keeps working.
It finds the shapes personal data usually takes. It is not a guarantee: it can miss things, and it can mask things that are not personal data. That is why the redacted text stays on screen for you to read before you copy it, and why the same person always gets the same placeholder, so a long document stays consistent.
The free page is complete for anything under 2,000 characters. The paid file is the same tool with the limits removed and the working features added, as one file you keep.
| Free page | Paid file | |
|---|---|---|
| Length per pass | 2,000 characters | No limit |
| Files | Paste only | Open .txt, .csv or .md, redact, download; restore the same way |
| Your own names | Not saved | A dictionary of client, staff and project names, saved in your browser |
| Placeholder maps | This session only | Export and import, so a reply from last week still restores |
| Runs offline | After the page loads | Always; it is a file on your disk |
| Price | Free | 19.00 USD personal, 79.00 USD team, one purchase |
Delivered by the checkout provider immediately after payment, as a download link on the receipt and in the receipt email. Refund in full within 14 days if it does not do what this page says, no questions asked.