Reduce an archival file carefully and validate again after compression.
- Compression creates a new archival object: Compression can rewrite images, metadata, object streams and colour information, so the output is a new file from a compliance perspective.
- Choose the safest point to reduce file size: Size reduction is safest before the final PDF/A conversion; when compression happens later, another validation pass is mandatory.
- Validate the smaller copy again: Compare legibility, searchable text, colour and metadata after compression.
Use these checks before completing Can You Compress a PDF/A File Without Breaking Compliance?.
Compression creates a new archival object
Compression can rewrite images, metadata, object streams and colour information, so the output is a new file from a compliance perspective.
Size reduction is safest before the final PDF/A conversion; when compression happens later, another validation pass is mandatory.
Decision table for Can You Compress a PDF/A File Without Breaking Compliance?
| Checkpoint | What to verify |
|---|---|
| Compression creates a new archival object | Compression can rewrite images, metadata, object streams and colour information, so the output is a new file from a compliance perspective. |
| Choose the safest point to reduce file size | Size reduction is safest before the final PDF/A conversion; when compression happens later, another validation pass is mandatory. |
| Validate the smaller copy again | Compare legibility, searchable text, colour and metadata after compression. |
Choose the safest point to reduce file size
- Keep the validated archive master untouched.
- Compress a working copy only when a portal limit requires it.
- Avoid aggressive settings that destroy legibility or OCR text.
- Run the PDF/A checker on the compressed result.
Workflow graph for Can You Compress a PDF/A File Without Breaking Compliance?
Validate the smaller copy again
Compare legibility, searchable text, colour and metadata after compression. Retain the validated master even when the smaller derivative passes, because the archive copy and the portal copy serve different purposes.
Review form for Can You Compress a PDF/A File Without Breaking Compliance?
Tools to put “Can You Compress a PDF/A File Without Breaking Compliance?” into practice
Reduce a working copy with PDF compression suited to the portal limit, create the archive form with PDF to PDF/A, and validate the compressed PDF/A result before submission.
Keep reading after Can You Compress a PDF/A File Without Breaking Compliance?
After completing the checks for Can You Compress a PDF/A File Without Breaking Compliance?, continue with what PDF/A is for the related PDFBEAR workflow. Check profile, font and preservation details in the Library of Congress PDF/A format record.
Should I compress before or after PDF/A conversion?
Compress before the final conversion when possible. If a portal forces later compression, treat the compressed result as a new file and validate it again.
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