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5 min read
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By Administrator
How to Compress a PDF Without Losing Quality
Reduce the size of your PDFs by up to 90% while keeping text crisp and images readable. A practical guide.
#compress
#pdf
#reduce-size
#optimize
Why your PDFs are huge
Most oversized PDFs come from scanned images at 300+ DPI or photos embedded at full resolution. Email providers usually cap attachments at 25 MB, and customer-portal uploads at 5–10 MB — so compression is often non-negotiable.
Three levels of compression
PDFLabz offers three presets:
- Light — recompresses images to 150 DPI. Good for documents with diagrams.
- Recommended — 100 DPI, JPEG quality 75. Best balance for everyday PDFs.
- Strong — 72 DPI, JPEG quality 50. Use for sharing scanned books or long reports.
How to compress
- Open Compress PDF.
- Drop your file.
- Pick a preset (Recommended works for 90% of cases).
- Click Compress and download.
What you should know
- Vector text never loses quality — only embedded images get re-encoded.
- If your PDF is already small (<500 KB), compression rarely helps.
- For absolute best quality, keep the original and compress a copy.