MergevantaMergevanta

Repair a damaged or corrupted PDF

Fix a PDF that won't open, shows errors or broke during a download. Its structure is rebuilt from the parts that can still be read and saved as a clean copy — free, with no watermark and no sign-up.

No watermarkFree, no sign-upFiles never storedAccepts .pdf
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Quick answer

How do I fix a corrupted PDF that won't open?

Add the file to Mergevanta's Repair PDF tool and press Repair PDF. It rebuilds the damaged cross-reference table and page list from the objects that can still be read, then saves a clean copy. If the structure is beyond saving, the pages are redrawn as images so their content is still recovered.

Price
Free
Watermark
None
Sign-up
Not required
Accepts
.pdf
You get
A repaired .pdf
Processing
Encrypted server for files up to 4 MB, your browser for larger ones
Files stored
Never
Works on
Windows, macOS, Linux, iPhone, iPad and Android

Updated

What you get

Why use Mergevanta to repair a damaged PDF

Rebuilds broken structure

Fixes the most common damage: a broken cross-reference table, a missing end-of-file marker, a cut-off download or stray bytes from a bad transfer.

Several repair methods

When one method can't read the file, the next one tries — and the result tells you which one worked.

Keeps what can be saved

Readable pages are kept even when others are lost, and the result lists any page that couldn't be recovered.

Private and free

No watermark and no sign-up. Uploads are encrypted end to end, repaired in memory and never stored.

Step by step

How to repair a damaged PDF with Mergevanta

  1. 1

    Click Choose PDF and pick the damaged file.

  2. 2

    Check the status: it tells you whether the file still opens or is damaged.

  3. 3

    Press Repair PDF.

  4. 4

    See which repair method worked, then press Download.

FAQ

Repair PDF questions

Broken or missing cross-reference tables, wrong object offsets, a missing %%EOF marker, files cut off during a download and bytes inserted by a faulty transfer. Content that was never saved in the file can't be brought back.

Files up to 4 MB are repaired on Mergevanta's server — encrypted end to end, processed in memory and never stored. Larger files, and files the server can't fix, are repaired in your browser.

When nothing else can read a file's structure, each page is redrawn as an image so its content isn't lost. Text on those pages can't be selected; run OCR PDF to make it searchable again.

Yes, if you know the password. Enter it when asked. The repaired copy is saved without a password, so add one again with Protect PDF if you need it.

A file that isn't damaged keeps its pages and content; it's only rewritten in a cleaner form. Damaged parts that can't be read are left out, and the result lists any missing pages.

Yes. Repair PDF works in mobile browsers on iPhone and Android, with no app to install.

Keep going

Other tools in the studio

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OCR PDF

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Merge PDF

Drop in as many PDFs as you need and get a single file back — free, with no watermark and no sign-up.

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