FAQ
Questions people ask before trusting a tool with their documents
Short, specific answers. If yours is missing, write to us and it will be added.
Privacy and security
Is my document uploaded anywhere?
No. The site has no upload endpoint. Your browser reads the file, finds sensitive data and writes the anonymized copy, all on your device. You can watch the Network tab in developer tools or turn off Wi‑Fi and repeat the job.
How can I be sure, beyond your word?
Three checks: open the Network tab and anonymize a file (no request contains it); do the same with Wi‑Fi off (it still works); look at Application → Storage to see that only a dictionary and a notice flag are kept. The how-it-works page walks through each step.
Do you keep logs of what I anonymize?
We cannot. The document never reaches a server, so there is nothing to log. Our analytics counts page views without cookies and never sees file contents.
What happens to my mapping table?
It is generated on your device and downloaded with your file. It is the key to reversing the anonymization, so treat it like the original document. We never see it.
Formats
Which formats are supported?
Nine: DOCX, PPTX, XLSX, PDF, TXT, MD, CSV, JSON and HTML. Up to 10 files per job, 50 MB each.
Will my Word file keep its formatting?
Yes. DOCX, PPTX and XLSX are edited at the XML level inside the archive: styles, headers and footers, comments, tables and images stay exactly as they were. Only matched text changes.
What happens to a PDF?
The text layer is extracted and returned as an anonymized DOCX plus Markdown. The original PDF is not modified and page layout is not reproduced. Scanned PDFs without a text layer are not supported; run OCR first.
What about old .doc, .xls and .ppt files?
The pre-2007 binary formats cannot be edited reliably in a browser. Open them in Office and save as .docx, .xlsx or .pptx first.
Detection quality
Is the detection perfect?
No tool is. Patterns with checksums (IBAN, card numbers, Turkish national IDs) are exact. Names, companies and places rely on your dictionary and the optional model, which can miss unusual names or flag ordinary words. That is why the review list is always shown before anything changes.
What is “smart detection” and is it required?
It is an optional named-entity model that spots names, organizations and places. It runs in your browser: about 110 MB for English or about 180 MB for the multilingual model used for Turkish, downloaded once from the Hugging Face Hub and cached. Pattern and dictionary detection work without it.
Does it handle Turkish names and suffixes?
Yes. Dictionary matches keep suffixes such as “Ahmet’in” → “Kişi 1’in”, Turkish national ID and tax numbers are validated with their checksums, and the multilingual model covers Turkish names.
Using with ChatGPT, Claude and Gemini
How do I use the result with an AI assistant?
Download the Markdown version and paste it into ChatGPT, Claude or Gemini, or attach the anonymized DOCX where file upload is supported. Ask your question as usual; the answer refers to Person 1 or Company A.
How do I get the real names back into the answer?
Copy the AI's answer into the de-anonymizer along with your mapping table. It swaps every placeholder back to the original, on your device.
Offline and PWA
Does it work offline?
Yes. After the first visit the app is cached by a service worker. Pattern and dictionary detection, rewriting and download all work with Wi‑Fi off. Smart detection needs its one-time download first; afterwards it is offline too.
Can I install it like an app?
Yes. In Chrome, Edge or Safari choose “Install” or “Add to Home Screen”. It opens in its own window and works offline.
Legal, GDPR and KVKK
Is this compliant with GDPR / KVKK?
Because documents are processed only on your device, we act as no processor for their contents, there is no transfer to us. You remain responsible for what you share with an AI provider. Our privacy policy explains the small amount of analytics data we do process.
Do you use cookies?
No cookies, first- or third-party. Page views are counted with cookieless Vercel Web Analytics. The one-time notice you see on first visit is stored as a flag in localStorage, not a cookie.
Pricing
Is it free?
Yes. Free, no account, no usage limits beyond the 10 files × 50 MB per job. It is an individual project by Göktuğ Yurt.
Still unsure?
Read the security page or write to us. yurtgoktug@gmail.com