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How to reduce a PDF for a college upload limit

Published 26 Sept 2026 · Sumit · Students

Course portals often reject files over 5 MB, 10 MB, or 20 MB. Read the exact limit in the error message, then compress toward that number.

Start with Keep text. Use Target size when the file is still too large. If quality would collapse, split into allowed parts if the syllabus permits.

Step by step

  1. 1Note the portal’s stated maximum size.
  2. 2Open Compress PDF and try Keep text first.
  3. 3If needed, choose Target size and enter the limit (with a small safety margin).
  4. 4Open the download, check readability, then upload to the portal.

Before you destroy quality

Delete accidental blank pages. Merge only what the assignment requires. A 40 MB scan of a two-page worksheet is a scan problem — reshooting clearer pages can beat aggressive compression.

Limits

  • Portals may reject files for reasons other than size (filename, PDF version).
  • Target size stops before unreadable output; impossible targets are reported honestly.
  • Keep your original assignment file.

Tools used here

Frequently asked questions

  • What size should I enter?
    Use the portal limit, slightly under (for example 9.5 MB for a 10 MB cap) to allow for encoding differences.
  • Is my assignment uploaded to mypdf.space?
    No. Compression runs in your browser.

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