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Compress a PDF to 750 KB

Short answer

Drop your PDF into the compressor below. It’s pre-set to 732 KB so the result passes a 750 KB limit either way. Useful when a “1 MB” portal still rejects files near the ceiling.

Loading compressor…

What fits in 750 KB

  • Comfortably: A resume or short report with little or no visible change, or several scanned pages at good quality.
  • At the limit: Twenty or more plain scanned pages at lower settings.

Some portals advertise 1 MB but reject files above ~750–800 KB after their own encoding or wrapper.

Starting at 750 KB leaves headroom without jumping straight to aggressive 500 KB compression.

“Good quality” here means around 100 DPI, which looks sharp on a screen. These are rough guides, not promises: a page of plain text compresses far better than a colour photo, so check the preview.

How to compress a PDF to 750 KB

  1. 1

    Drop your PDF into the compressor above, or tap it to choose a file. It’s already in Target size mode at 732 KB.

  2. 2

    Press Compress. A lossless rebuild runs first. If the file is still too big, the pages are re-rendered at lower resolutions, from 150 DPI down to 50 DPI, until it fits.

  3. 3

    Check the preview of the first pages. Zoom in on the small print, such as dates, ID numbers and stamps, because that’s what blurs first.

  4. 4

    Download the file and check its size on your device before uploading. On Windows, right-click and choose Properties; on a Mac, use Get Info. Compare the size in bytes with the limit.

  5. 5

    Upload it. If the portal still says the file is too big, run the compressor again on the original with a slightly lower target.

Why the tool is set to 732 KB, not 750 KB

Kilobytes are counted two ways. Some websites treat 1 KB as 1,000 bytes; others, and this compressor, treat it as 1,024. A file the compressor calls “750 KB” is 768,000 bytes, about 2.4% more than 750,000, and a strict portal will reject it.

732 KB in the tool is 749,568 bytes, which is under 750 KB by either definition. You lose almost nothing in quality and avoid the most common “file too large” rejection.

If it won’t get down to 750 KB

The compressor stops at 50 DPI, because below that the text stops being readable. If even that pass is too big, you get the smallest readable file and a message saying so, instead of a file that technically fits but that nobody can read. These help:

  • Try lossless first — many text PDFs fit without rasterizing.
  • Shrink resume photos in Word before exporting if Target size still struggles.
  • Check the portal’s exact wording — it may want 750 KB specifically.
  • Split the document if the portal has more than one upload field. Split PDF breaks it into parts you can compress separately.

Limits worth knowing

  • Re-rendered pages become images with an invisible text layer. Search and copy keep working, but accented and non-Latin characters can be dropped from that layer.
  • Large or image-heavy PDFs take a while, because each pass re-renders every page on your device.
  • Password-protected PDFs have to be unlocked first.
  • A portal can reject a file for reasons other than size, such as the file type or characters in the file name.

Frequently asked questions

  • Why compress to 750 KB instead of 1 MB?
    When a site says 1 MB but still rejects your file, 750 KB is a practical next target that often clears their stricter counting.
  • Will my resume stay ATS-readable?
    If the lossless pass fits, text is unchanged. Prefer that over heavy rasterization for job applications.
  • Does this upload my PDF?
    No. Compression stays in your browser.

Guides for upload limits

Written by Sumit · Last reviewed 12 Oct 2026