Email attachments fail for two reasons: the file is too big, or it uploads too slowly. Compressing a PDF solves both.
This guide shows how to shrink a PDF and still keep it readable.
Quick checklist (do this first)
- If you scanned pages, try scanning at 300 DPI (not 600).
- If you exported from Word, export as PDF (standard), not “high quality print”.
- If the PDF contains photos, expect bigger size. Photos compress well. Text-only PDFs are already small.
How to compress a PDF using Micro Task Assistant
- Open PDF Compressor.
- Upload your PDF.
- Choose a compression level if the tool offers it.
- Download the smaller file.
- Open it once and check text and images.
What compression actually changes
Most PDF compression reduces:
- Image size inside the PDF (the biggest win).
- Metadata and unused objects.
Compression usually does not change the number of pages. It also does not “fix” a blurry scan. If the scan is blurry, it stays blurry.
Tips to keep quality
- If the PDF is for printing, use light compression first.
- If the PDF is for email or WhatsApp, stronger compression is usually fine.
- If small text becomes fuzzy, use a lighter setting and try again.
Common problems
The PDF is still large
Try one of these:
- Compress again at a stronger setting.
- If it is a scanned PDF, compressing helps, but the original scan settings matter most.
- Split the PDF into parts and send multiple emails. Use Split PDF.
The PDF looks worse after compression
Use a lighter setting. If the PDF is mostly images, compressing too hard will soften details.
Related tools
- Merge PDF: combine files before sending
- Split PDF: break a big PDF into smaller parts
- PDF Page Organizer: remove extra pages before you compress
If you want to share why you need compression (email, printing, mobile), reach us via Contact.