Compression benchmarks are only useful when they separate document types. A scanned image PDF, a digitally generated invoice, a slide deck, and an already optimized file behave differently.
ClearPDF Phase 1 browser compression is best for image-heavy PDFs where image recompression can reduce size. It may not shrink vector-heavy, text-only, encrypted, or already compressed PDFs.
Public benchmark assets should report file type, starting size, output size, percent reduction, visual review notes, browser time, memory risk, and whether advanced cloud compression would be needed.
Key details
Quality metric
Review readability, image artifacts, form-field visibility, page order, signatures, and whether the output opens in common PDF viewers.
Speed metric
Measure browser processing time on representative desktop and mobile hardware, not only a high-end development machine.
Failure metric
Track encrypted files, huge scans, malformed documents, memory errors, and cases where advanced server compression is the right answer.
Practical checklist
- Test scanned documents, image-heavy reports, generated text PDFs, forms, and slide decks separately.
- Record original size, output size, reduction percent, and processing time.
- Inspect visual quality at normal zoom and high zoom.
- Note when local compression produces little or no gain.
- Link benchmark results back to practical compression settings.
Related ClearPDF pages
Continue the workflow with a related guide, policy page, or tool.
Why compression was not enoughContinue the workflow with a related guide, policy page, or tool.
Compress PDFContinue the workflow with a related guide, policy page, or tool.
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