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Prepare documents for AI

Use the document.
Leave out the names.

Replace private details in a document before you use it with AI. Bring the answer back to put those details in again.

Prepare a documentTry an example

Excel, Word, PDF or text. No sign-up. Try fictional data first.

Your document

Alex Morgan will review the draft.

Choose the details to replace

The copy you share with AI

REF_7a91c82d4e60_0001 will review the draft.

Bring the answer back and the label becomes Alex Morgan again.

Fictional example. Only the text you choose is replaced.

One document. Four simple steps.

  1. 1

    Add your document

    Choose a file on your computer, or paste text. It is opened in your browser.

  2. 2

    Choose what to replace

    Select names, email addresses or other private details. Exact matches get a consistent label.

  3. 3

    Use the prepared copy

    Review and download the copy. Attach it in Gemini, Claude or ChatGPT using your own account.

  4. 4

    Bring the answer back

    Paste the answer or add the returned file. Restore the original details and download it for local use.

Start with the file you have.

Want to anonymise a document before AI? Replace selected identifiers with reversible labels. Each format has different limits; this is not guaranteed anonymisation or layout-preserving redaction.

Excel spreadsheetsReplace a whole column. Keep the saved values.Word documentsChoose names and phrases. Export a fresh text-based copy.PDF textExtract the wording. Download Word or text, not PDF.Text and notesPaste notes or open a .txt file. Keep your question separate.
See how to bring the names back

Your original stays with you.

Files and replacements are processed in your browser, not uploaded to our server. You decide when to share the prepared copy with your AI.

Review before you share. Only your selected text is replaced. Other details could still identify someone. Follow your organisation’s rules and use an approved AI account.

Bring back the answer. We save the matching details in this browser when you download your copy. Return here to restore them, with no password or extra file for new documents. Anyone using this browser profile can restore saved details. Clearing browser data can remove them.

A fresh copy, not the original layout. Word and PDF become text-based Word or text files. Excel keeps rows, columns and saved values. Images, comments and original metadata are not copied. Scanned PDFs are not supported.

Start with a document, not a setup process.

Prepare a document