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SlimFile.app

Repair a damaged PDF

Rebuild a PDF that will not open. Up to 10 at a time, 25 MB each.

Choose your PDFs

up to 10 at a time.

PDFMax 25 MB each

How it works

  1. Step 1

    Drop the broken PDF

    Drag up to 10 PDFs onto the page, or browse for them. Each can be up to 25 MB.

  2. Step 2

    It gets rebuilt

    Whatever can still be read is parsed out and written into a brand new file with a fresh, correct index.

  3. Step 3

    Check what survived

    The page count tells you how much came back. A file that is beyond saving says so, rather than handing you something that still will not open.

Why use SlimFile.app for this

  • Rebuilt, not redrawn

    Whatever can be read is written into a brand new file with a correct index — pages look exactly as they did.

  • Free, no sign-up

    No account, no email address, no trial that runs out.

  • No watermark

    What you download is clean — nothing added to your file.

  • Deleted within an hour

    Uploads and results are removed automatically about an hour after processing. We never look inside them.

Questions

How do I fix a PDF that will not open?
Add it here. The readable content is parsed out and written into a fresh file with a rebuilt structure, which fixes most broken downloads and bad transfers. Pages that never arrived cannot be brought back.
What can this actually fix?
Damage to the structure that points at your content — a broken cross-reference table, a wrong end-of-file offset, junk appended by a bad upload or transfer. Those stop a PDF opening even though every page is still intact, and rewriting the file from scratch resolves them.
What can it not fix?
Anything genuinely missing. If a download stopped halfway, the pages that never arrived cannot be recovered by any tool — the data is not in the file. In that case you will get fewer pages back, or a message saying the file is beyond saving, rather than a file that still will not open.
Will it change how my PDF looks?
No. Pages, text and images are carried across exactly as they were found. Only the file structure around them is rebuilt.

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