100% Local & Private

Anonymise. Prompt. Restore.

Drop documents right inside ChatGPT or Claude. PromptSafe detects confidential data, replaces it with smart placeholders, and injects safe text directly into the chat. Restore originals in one click.

Also works on Edge, Brave, Opera, and all Chromium browsers.
Or use the web app

Looking for PDF anonymisation? PromptSafe PDF →

100% Client-side No Server Uploads Reversible Vault

Paste or drop your document

Contracts, resumes, case files, financials — any document with confidential data. PromptSafe extracts the content automatically.

Review & adjust detections

Names, IDs, emails and more are auto-detected. Add anything missed, remove what doesn't need hiding.

Inject safe text, then restore

Hit "Anonymise & Inject" — safe text goes straight into the AI chat. AI responds with placeholders. Restore originals in one click.

See it in action

Toggle between original and anonymised to see what AI receives

Original text

Dear Mr. Tan Wei Ming, Please find the updated employment contract for Sarah Lim (NRIC: S9012345B). Her new salary of $8,500/month at TechVentures Pte Ltd is effective from 1 March 2025. Sarah Lim should contact David Chen at david.chen@techventures.sg or +65 8234 5678 to arrange signing at TechVentures Pte Ltd.

Smart detection, not find‑and‑replace

PromptSafe detects entity types — not individual words. It scans for names, NRICs, emails, phone numbers, and more across your entire document automatically.

Spotted a false positive? Click to remove it. Missed something? Highlight any text and label it — Person, Company, NRIC, or any of 18+ types. You're always in control of what gets anonymised.

Detected entities

Dear Tan Wei Ming, Please find the updated contract for Sarah Lim (NRIC: S9012345B). Her new salary of $8,500/month is effective from 1 March 2025. Contact her at sarah.lim@email.com or +65 8234 5678. Regards, David Chen HR Manager, TechVentures Pte Ltd

Person NRIC Email Phone Company Date Financial

Chrome Extension

Anonymise right inside ChatGPT & Claude

The full workflow without switching tabs. Drop documents, anonymise, inject, and restore — all from a side panel.

Open the side panel

After installing the extension, click the PromptSafe icon next to the Microphone icon on ChatGPT.

PromptSafe icon next to ChatGPT send button

Drop & detect

Drag in a PDF, DOCX, or image. Text is extracted instantly with names, NRICs, emails, and financials highlighted.

Review & adjust

Review the extracted text and add or remove any sensitive items. You're always in control of what gets anonymised.

Inject safe text

Hit "Anonymise & Inject" — safe text with [PERSON_1] placeholders is inserted directly into the chat input.

Restore original data

AI responds using placeholders. Restore original data by clicking the blue banner under the output (ChatGPT) or copying the output and pasting in the extension's Restore tab (Claude).

Anonymise. Prompt. Restore.