How to Compress a PDF
Compress PDF to 1–5MB for email and uploads — smart dedup and image resampling keeps text sharp.
Steps
- Upload PDF — Large files batch wisely.
- Pick target size — 1/2/5/10MB presets or custom; via font subsetting & resampling.
- Compare & download — Check before/after size & ratio, then download.
No sign-up, processed locally
Use cases
Compress PDF to 1–5MB for email and uploads — smart dedup and image resampling keeps text sharp.
Work & Study
Compress PDF to 1–5MB for email and uploads — smart dedup and image resampling keeps text sharp. Fits lectures, reports, assignments and batch conversions — fully offline, private.
Business & Legal
Contracts and invoices are processed locally with no upload, meeting compliance.
Design & Archive
Image-PDF and layout tasks preserve color/vectors for portfolios and print checks.
Tips & notes
- Batch large files; keep each run <100MB to avoid memory spikes.
- Page syntax supports commas & hyphens like “1,3,5-7”; out-of-range pages are ignored.
- If the browser blocks multi-downloads, allow auto-downloads or click one by one.
よくある質問
Will files be uploaded? Is it safe?
How to Compress a PDF runs 100% locally via File API with no upload; memory clears when you close the tab.
What if processing fails?
Check for corruption, encryption/password, page range, then retry with a smaller file.
Can I chain with other tools?
Yes — organize/split first, then compress/convert, then protect/sign in a chain.
This guide reflects real tool capabilities and is reviewed regularly.