FormatDogWorkspace
For a PDF that won't open, looks broken, or throws errors in other viewers. Runs two levels of automatic recovery, entirely in your browser.
No signup · No file limits · Files never leave your deviceSelect the file(s) that won't open properly.
First, we rebuild the file's internal structure while keeping all real text intact. If that's not enough, we fall back to reconstructing every page visually.
Get back a working PDF — and we'll tell you honestly if a file was too damaged to fix.
Most commonly: a damaged internal index (cross-reference table), a bad incremental save, or minor structural corruption — the kind of thing that makes some viewers refuse to open a file that others can still partially read. The first repair pass rebuilds a clean internal structure while keeping your real, selectable text and formatting exactly as they were.
We automatically try a second, more aggressive recovery: rendering every page it can still read as an image and rebuilding a new PDF from those. This recovers the visual appearance even from more seriously damaged files, but the rebuilt pages will be images rather than selectable text — we only fall back to this if the first, better method doesn't work.
You'll get a clear message saying so. Some corruption (e.g. a file cut off mid-transfer, or damaged at the storage level) genuinely can't be recovered by any tool without the original source — we won't pretend otherwise.
No. Every repair attempt happens entirely inside your browser.
Yes, completely free with no daily limit.
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Pinch or use +/− to zoom, two fingers to pan. One finger to drag and redact.
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Drag the corner handles to resize the crop area, or drag the middle to move it.
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Detecting grid lines…
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Click any line of text to retype it. Pinch or use +/− to zoom.
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Highlight/Underline: drag a box over the text. Draw: drag to sketch. Note: tap once to place a comment.