How to blur a PDF
- Choose or drop the PDF.
- Type the words to blur, or tick what to find automatically.
- Click any text to blur it or show it again, and draw boxes over pictures.
- Download the blurred PDF.
Can blur be undone?
Not here. Each blurred patch is made from a heavily shrunk picture of the area, so the detail is gone, and the text underneath is deleted from the file.
Why this is real redaction
- Drawing a black box in a PDF editor leaves the text underneath; anyone can copy it out. Here the hidden text is deleted from the file.
- The rest of each page keeps its original text, so it stays sharp, selectable and searchable instead of turning into a blurry image.
- After export the PDF is read back like any PDF reader would. If hidden text could still be extracted from a page, that page is saved as an image instead.
- Comments, form fields, thumbnails, bookmarks, attachments and document metadata are removed.
- The site has no server code, no analytics and no cookies. Its security policy stops the page from connecting to any other site, and it keeps working offline after the first visit.
Questions
- Can blurred text in a PDF be recovered?
- Not with this tool. The text under the blur is deleted from the PDF, and the blur is drawn from a shrunk copy of the area, so there is no detail left to sharpen.
- Is my PDF uploaded anywhere?
- No. The PDF is opened inside your browser tab. The site's security policy blocks the page from sending data to any server, and it works offline once loaded.