Quick Decision

Compress PDF: Strengths and Limits

Best for:

• Scanned documents (images compress 50–75%)
• Documents with embedded high-resolution images
• Situations where one file is required

Limitations:

• Text and vector content has little compression room (already compact)
• Very high-quality PDFs may not compress enough
• Compression is irreversible — always keep the original

Process:

1. Compress PDF → Medium compression → check resulting size
2. If still too large → High compression
3. If still too large → fall back to Split

Split PDF: Strengths and Limits

Best for:

• When quality cannot be reduced at all (legal documents, print-ready files)
• When the recipient or portal accepts multiple files
• When you only need to share specific pages
• As a fallback when compression is insufficient

Limitations:

• The recipient receives multiple files, not one
• Requires the recipient to assemble them if the full document is needed
• Does not reduce the total bytes — just divides them

Process:

1. Split PDF → set page ranges → download each part
2. Name parts clearly: contract-pages-1-10.pdf, contract-pages-11-20.pdf

The Recommended Flow

For a PDF that is too large to email or upload:

Is it a scanned document with lots of images?
  YES → Compress (Medium) first
         → Still too large? → Compress (High)
         → Still too large? → Split
  NO  → Is quality critical?
         YES → Split directly
         NO  → Compress (Medium) first → Split if needed

Can You Do Both?

Yes — and sometimes you should. For a very large scanned document that still needs to go under a strict limit:

1. Compress first (reduces size while keeping it one file)
2. Split the compressed result if still too large

Splitting a compressed file is perfectly safe — you are just dividing it, not re-compressing.