Why do forms ask for PDFs under 500 KB?

Storage and bandwidth across millions of applications, and a practical ceiling on how long an upload takes over a slow connection. It is not arbitrary, and the limit is rarely negotiable.

What if my scan is 10 MB?

That is normal for a high-resolution scan, and 500 KB is usually reachable without visible loss. Run it through and look at the result.

Compress a PDF to 500 KB

Five hundred kilobytes is the most common PDF limit on application forms, and the most forgiving: a scanned document of four or five pages usually fits with quality left over.

Most files that fail this limit are large for an avoidable reason — they were scanned at a resolution far higher than anyone needs, or assembled from phone photographs at full size. Bringing them under 500 KB typically costs nothing you would notice on screen.

If your document is longer than about ten pages, expect to split it. A form asking for 500 KB is usually asking for one document, not a file of everything.

Set below already, and editable. The numbers on the form you are filling in are the ones that count — application rules change, and this page is not the authority.

1. Choose a PDF

Drop a file here, paste it, or click to choose

Nothing is uploaded. The file stays on your device.

2. Target size (KB)

Questions

Why do forms ask for PDFs under 500 KB?: Storage and bandwidth across millions of applications, and a practical ceiling on how long an upload takes over a slow connection. It is not arbitrary, and the limit is rarely negotiable.
What if my scan is 10 MB?: That is normal for a high-resolution scan, and 500 KB is usually reachable without visible loss. Run it through and look at the result.

Other sizes

Need a different number? The PDF compressor takes any size you type. Everything runs on your own device, and nothing is uploaded to this site or anywhere else.