Black out part of a PDF without uploading it

Draw a rectangle, or pick a band, and download the PDF with that area covered. The box is painted in this tab.

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  1. Choose file
  2. Set options
  3. Get result

Your file never leaves your device. Processed locally in your browser. Nothing is uploaded.

The rectangle is opaque. The words underneath stay in the file, so this is a cover, not a deleted redaction.

How to black out a PDF

1. Drop one PDF you already have. Pictures and audio are refused here. 2. Drag on the preview to draw a cover, or press Middle band, Top band or Bottom band. 3. Leave Black, or pick White when the page is already dark. 4. Leave Every page, or choose First page only. 5. Press “Black out PDF” and open the download.

People also search for this as redact PDF. GustKit draws an opaque rectangle with pdf-lib. It does not delete the words stored under the box. A reader sees the cover. Copying text, or removing the drawing in another editor, can still reveal what was underneath.

A cover is not the same as deleting the page

Delete PDF pages removes a whole page. Crop PDF cuts the page down to a frame. This page keeps the page size and paints a rectangle on top. Watermark PDF stamps words you can still see through. Use a cover when a name, a number or a signature should not show in the reader.

The PDF stays in this tab

pdf-lib loads in this tab and writes the rectangles into the file you download. The original text layer is not rewritten. Password-protected PDFs must be unlocked first. GustKit does not fetch a PDF from a link.

How to check the cover before you send the PDF

1. Open the download and look at the band you covered. The page size should match the original. 2. Try to select text in that band. If the words still copy, the cover is only paint. 3. If a name still shows at the edge, draw a wider box and run again.

Black is the cover for a light page. White is for a dark page. Every page uses the same boxes. Delete PDF pages is the tool that removes a whole page. Nothing is uploaded.

Frequently asked questions

Did this erase the hidden words?

No. The rectangle is paint. The words underneath are still in the file. Flatten the download to an image if you need the text gone.

Can I cover a different area on each page?

No. The boxes you draw are applied the same way on every chosen page. Split the PDF first if each page needs its own cover.

Why is a white box hard to see on a white page?

White matches the paper. Use Black when the page is light. White is for a page that is already dark.

Is the PDF uploaded?

No. The rectangles are drawn in this tab.

The box is there and I can still copy the words. Did it work?

Yes. The rectangle hides the words in the reader. It does not delete them from the file. Flatten to an image if the text has to be gone.

Can I black out and also crop in one step?

No. Crop first, or black out first, then open the other page on the download.