Compress PDF to 500 KB

Compress PDF to 500 KB fits a scanned or photo-heavy PDF of a few pages under 500 KB while keeping it easy to read, re-rendered in your browser with no upload.

Drag and drop, or click to upload a PDF

PDF file · processed on your device, never uploaded

At a glance

Accepts: One PDF file, best a scanned or photo-heavy one
Outputs: A PDF under 500 KB at the highest quality that fits
Where it runs: Entirely in your browser, on your device
What leaves your device: Nothing - the file never leaves your device
Limits: Realistic up to about 20 scanned pages; pages are re-rendered as images, so text stops being selectable
Account: Not required - there is no sign-up
Price: Free, with no watermark and no usage cap
Made by: Visrut
Last updated: 8 October 2026

At 500 KB the question changes from "will it fit" to "how many pages can I keep sharp". A one or two page scan fits with room to spare and stays crisp, so this is a good target for a CV with a scanned certificate attached, a signed contract, or a bundle of supporting documents for an online application. The page opens with "Under 500 KB" selected; everything runs in your browser, and the result is the best quality setting that came in under the limit.

How far 500 KB goes

Measured on our test files (300 DPI A4 scans unless noted):

1 page: 281 KB at 150 DPI. Sharp on screen and readable when printed.
2 pages: 287 KB at 120 DPI.
3 pages of photos: 399 KB at 150 DPI.
10 pages: 493 KB at 72 DPI. Readable, softer.
More than about 20 pages: likely to miss, even at the lowest setting.

When this is and isn't the right choice

Right choice: a scanned or photo-heavy PDF of up to about 20 pages that must go through a 500 KB upload limit.
Wrong choice: a document you will need to search or copy text from later. The output is page images, so keep the original alongside it.
Wrong choice: one large PDF where only a few pages matter. Extract PDF Page those first, and they will fit at a much higher quality.

Tips for 500 KB targets

If you are combining several scans, merge them with Merge PDF first and compress the merged file once. Compressing each piece and merging afterwards makes it hard to land on 500 KB total.
Leave a little headroom if the form adds a cover sheet or you might add a page later. A custom target like 450 KB keeps a margin.
For a mix of typed pages and photos, check the photo pages in the result. They lose detail first.

How to use it

Add your PDF using the upload box.
"Under 500 KB" is preselected. Click "Compress PDF".
Compare the before and after sizes, then download the smaller PDF.

Frequently asked questions

How much quality do I lose compressing to 500 KB?

For a short scan, very little you would notice on screen. Our one-page 300 DPI scan landed at 281 KB rendered at 150 DPI, and a two-page scan at 287 KB at 120 DPI. Text is crisp at normal zoom; the loss shows only if you zoom in far or print large.

Can a 10-page scanned PDF fit in 500 KB?

In our test, just. Ten 300 DPI scanned pages (about 19 MB) came out at 493 KB at 72 DPI, which is still readable. Around 20 pages is the practical ceiling, at the lowest setting.

My PDF has selectable text. Should I compress it to 500 KB here?

Check its size first. A text PDF from Word or a browser is usually well under 500 KB already; our 12-page text report was 12 KB. Compressing it here would rasterize the pages and make it larger, so the tool will tell you the file already fits.

Why was the result smaller than I needed?

The tool steps through fixed settings and keeps the first that fits. The step above was over 500 KB, so it took the next one down. If the form accepts slightly more, a custom target such as 600 KB may give you a sharper file.