How to Compress a PDF Before Sending It
Learn when to compress a PDF, which quality setting to choose, and how to review the result.
By Berlvis Editorial Team · Published · Updated
When compression helps
Compression helps most when a PDF contains scanned pages, screenshots, photos, or large embedded images. Text-only files are usually already small, so they may not shrink much.
Choose the right quality
Use a medium setting for everyday email and portal uploads. Use a higher setting for documents with small print, signatures, charts, or ID scans. After compression, zoom in and confirm that names, dates, numbers, and signatures remain readable.
Keep a clean original
Save the compressed copy with a new filename and keep your original file unchanged. That makes it easy to retry with a higher quality setting if the output is too soft.
Measure the result against the real limit
Check the attachment or portal limit before compressing. A document that is already below the limit may not need aggressive changes. After compression, compare the original and output file sizes and make sure the new filename is clear enough that you do not accidentally send the larger version.
Know when compression is not enough
Very large scanned PDFs may need additional work, such as removing blank pages, rescanning at a sensible resolution, or splitting unrelated sections into separate documents. Avoid repeatedly compressing an already compressed copy because each pass can make text and images harder to read without producing a useful size reduction.
FAQ
Will compressing a PDF reduce quality?
It can. Compression trades file size for image quality, so always review the final PDF before submitting it.
Is the PDF uploaded to compress it?
No. Berlvis Compress PDF is designed to process the file in your browser.