PDF300 › Target size › 300 KB

Compress PDF to 300 KB

300 KB turns up on study-abroad, exam and government forms. It is enough for a two- or three-page scan that still reads cleanly, or a single page at print quality. No upload in browser modeNo sign-upNo daily limit
Drop a PDF here, or click to choose
Preset to 300 KB. Change it if your form says otherwise. 1 KB = 1,000 bytes here, so the file also passes sites that count 1,024.
⚠️ Output is an image-based PDF (text is not selectable). Other sizes: 100 KB · 200 KB · 500 KB · 1 MB · any size

What fits in 300 KB

With 300 KB a single page can reach about 150 dpi — sharp enough to print. Three pages land around 88 dpi in our tests, and ten pages around 49 dpi. If you need a detailed walk-through of the method, read how to reduce a PDF to under 300 KB without making it unreadable.

PagesTest fileResultResolution reachedReadability
1ID-style scan, 1.0 MB283 KB153 dpi · q72sharp, prints well
2photo pages, 1.4 MB295 KB128 dpi · q72clear on screen
3colour text scan, 2.5 MB286 KB88 dpi · q72normal text readable
6grey text scan, 6.1 MB285 KB77 dpi · q35normal text readable
10mixed scan, 5.0 MB285 KB49 dpi · q50hard to read

Measured on 16 October 2026 with this tool in browser mode on our own test PDFs (synthetic A4 scans with paper noise, which is harder to compress than a clean office scan). Your numbers will differ; cleaner scans get higher resolution. “q” is the JPG quality the tool settled on. Readability labels are a rough guide: 100 dpi and up is clear on screen, 70–100 dpi keeps normal-size text readable, below 50 dpi only large text survives.

Where you will see a 300 KB limit

If it won’t go below 300 KB, try this

  1. Scan both sides onto one page.If the form wants the front and back of an ID, put both on one A4 page. One page at 300 KB is crisp.
  2. Remove the cover letter.Portals usually want the document, not a covering letter. Fewer pages means more detail on the ones that matter.
  3. Try server mode for text PDFs.If your PDF is mostly typed text with one heavy image, high-quality compression keeps the text as text and may reach 300 KB without blurring anything.
  4. Check the result at 100%% zoom.Read the smallest number on the page — a passport number or date of birth — before uploading.

Questions

What resolution will my pages get at 300 KB?

In our tests: one page about 150 dpi, two pages about 128 dpi, three pages about 88 dpi, ten pages about 49 dpi.

Why does my 2-page PDF from my bank already fit?

Statements generated by software are stored as text, not images, so they are usually small already. The tool tells you if the file is already under the target.

Will the PDF still open on the portal?

Yes. The output is a standard PDF with one JPG image per page, which every viewer and upload system accepts.

Is the 300 KB guide different from this page?

The guide explains the method in depth; this page is the tool, preset to 300 KB, with measured page counts.

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