How to compress a PDF below 1 MB

When a form, portal, or email attachment has a strict 1 MB limit, reduce the PDF carefully so it remains legible.

1. Check the original file size

First, confirm that the document is actually larger than 1 MB. If it is only slightly above the limit, light compression may be enough and is usually the best way to preserve image quality.

2. Start with balanced compression

Upload the PDF to Featherpress, choose the balanced setting, and download the result. This generally gives a useful reduction without making scanned text or photographs noticeably soft.

3. Set a target size when the limit is strict

Turn on the target file-size option and set the maximum to 1 MB. If the receiving website rejects files right at its advertised limit, use a little headroom—such as 900 KB—to account for how the service measures file size.

4. Use stronger compression only if needed

If the result is still too large, try maximum compression. This reduces image resolution and quality more aggressively, so inspect each page before sending it. Text should remain easy to read at normal zoom.

Why some PDFs will not shrink much

Text-only PDFs and files that were already optimized may not become much smaller. Scanned documents and PDFs containing large images usually offer the greatest size reduction. If a file is still above 1 MB after compression, split it into separate documents only if the receiving service allows multiple uploads.

Before you upload

Open the compressed PDF, check page order and readability, and make sure any required signatures or details are still visible. Keep the original until the upload has been accepted.