# PDF Repair, Cleanup, and Slimming

Rescue a damaged PDF, strip what should not travel with it, and cut its weight — repair broken headers and cross-reference tables with diagnostics, export annotations before erasing them, remove metadata and form fields, then downsample and recompress to hit your size target.

> Canonical page: https://elysiatools.com/en/hubs/pdf-repair-cleanup-and-slimming

- **Keywords:** repair damaged PDF, fix broken PDF file, remove PDF metadata, export PDF annotations, compress PDF smaller, PDF file size reduction, clean PDF before sending, downsample PDF images

## Frequently asked questions

### Is a PDF that will not open at all still rescuable?

Often, yes — most broken PDFs have a damaged header or a missing cross-reference table rather than destroyed content, and the repair tools rebuild exactly those. How much survives depends on where the damage sits, which is why the original is backed up first and the diagnostic log is read after.

### Does optimization damage the content?

Stream recompression and redundant-object removal cost almost nothing visible. Image downsampling is the one irreversible cut — it permanently reduces image resolution, so it belongs in screen copies and out of print masters and archival copies.

### How is cleanup different from redaction?

Cleanup removes document-level attachments — metadata, annotations, bookmarks, form fields — the furniture around the content. Redaction removes content itself, words and images from the page, and belongs to the signing and distribution workflow. Cleaning a file does not expurgate it.

### Why export annotations before cleaning?

Because annotations carry review conclusions — the questions raised, the passages flagged, the verdicts penciled in the margin — and cleanup erases them without appeal. The export takes seconds and preserves exactly the material that is hardest to reconstruct from memory.

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