Detect it. Truly redact it.

Yes. Redaction is burned into the page, so text, images, metadata, annotations, attachments, and hidden text are all unrecoverable. After export, Fuseji re-runs a full-text search (and OCR, on Pro and Office) to confirm the redacted terms don't appear anywhere.

It means removing the text under the redaction and rebuilding the page. Many PDF redactions just place a black box over the text, and the text is still in the file, so it can be copied or revealed by moving the box. Burning in removes the text itself, so it cannot be recovered.

A redaction where a black box sits on top of text that is still in the file. It looks removed, but copy and paste or an editing tool can reveal it. Personal data has actually been exposed this way in published documents.

It checks a PDF redacted with another tool for text under black boxes, hidden text, and metadata such as the author. It is free. Use it on PDFs you receive or are about to send.

Yes. Text outside the redactions can be kept for search and copying (an export option). You can also export every page as an image with no text at all.

We don't quote a number. Automatic detection surfaces candidates, but it isn't a guarantee. Make the final call on screen. Fuseji records your confirmation state but isn't liable for what you didn't catch.

No. Documents, images, detection results and verification reports are never sent. The app only connects to activate, deactivate and weekly re-check your license key, to check for updates once a day (you can turn this off), and when you choose to send a case that didn’t work or send feedback. The case report replaces the document’s characters with their kinds and contains no documents or words; feedback contains only the text you write and an optional reply email address. You can read either in full before sending.

No real people's information. We fine-tuned a Japanese model (BERT) published by Tohoku University, using only data we built by combining fictional names, places, and sentences. The model is bundled under CC-BY-SA-4.0, and the credit is listed in the app's “About Licenses” screen.

Yes. Choose the “Contract template” analysis type when you open a PDF, and Fuseji also surfaces amounts, dates, and periods as candidates alongside company names, personal names, and addresses, with underline set as the default style. You can turn a signed contract into a fill-in-the-blank template.

Yes (from 0.1.10). Open a PNG, JPEG or HEIC image (PNG and JPEG on Windows) and redact names, phone numbers and so on the same way as a PDF. The exported image is read back with text recognition to confirm the removed words are unreadable and that metadata such as location is gone before it is saved (the free version checks too).

Mostly not. The text recognition used for scans and photos is designed for printed text, and handwritten names or numbers often cannot be read. Add a range by hand on the review screen for handwritten parts (drag with the mouse, or draw with Apple Pencil on iPad). Ranges you add are burned in the same way as printed text. The post-export verification (checking that the removed words can no longer be read) also relies on text recognition, so it does not cover handwritten text. Please check the exported file on screen.

On Mac: Apple silicon (M1 or later) with macOS 13 Ventura or later; Intel Macs are not supported. On Windows: Windows 10 or Windows 11 (x64, 22H2 or later); Windows on ARM is not supported.

Detection, review, export, the inspector, and text masking all work in the free version. The free version adds a watermark to exports and masks up to 2,000 characters at a time. Saving the verification report and the redaction ledger start with Personal; batch processing, shared dictionaries, strict (OCR) verification, and redaction reasons start with Pro.

We are improving detection by collecting and fixing cases where it did not work on real documents. During this period it is 50% off until December 31. The beta has no feature limits, and the one year of updates included with your purchase covers the full release. If a document did not work well, let us know at [email protected]. Please don’t send the documents themselves.

Versions released within one year of purchase keep working with no time limit. From the second year, an optional “One Year of Updates” (25% of the purchase price, tax included: Personal ¥995, Pro ¥3,200, Office ¥9,950) gives you every version released during that year. It renews yearly and can be stopped at any time; versions you already had keep working. During that year we keep updating detection and redaction to follow changes in laws and document formats. We will tell you how to buy it before your first year ends.

From January 1, 2027, customers who bought the desktop version will see a referral code and link under Settings → License in the app. Anyone who buys through that link gets 20% off, and you get one free year of “One Year of Updates” for each referral (with no limit). The code is derived inside the app from your license key; the app sends nothing for referrals.

Open the customer page and enter the email address you used to buy. Sign in with the code we send, and your license key is shown there at any time. The key is also in the email you received when you bought (sent by Polar). If you cannot find it either way, email [email protected] with the email address you bought with or your order number. Please don’t send the documents themselves.

Yes. Within 14 days of purchase, for any reason. Refunds are processed by Polar.

If something didn’t work, use うまくいかなかった例を送る (Report what didn’t work) in the app (only a diagnosis with the characters masked by type is sent). For anything else, email [email protected]. Please don’t send the documents themselves.