BatchSet
Sign up

Compress a PDF to 500 KB, Right in Your Browser

Bring a large scanned PDF down to 500 KB while keeping it sharp enough to read. Free, no sign-up, and the file never leaves your device.

Compressed in your browser. Free, no sign-up, the PDF never leaves your device.

KB

Quick answer

BatchSet compresses a PDF to 500 KB free and entirely in the browser, with no upload and no sign-up. At 500 KB a short scanned document often keeps 150 DPI and a high JPEG quality, and the result shows the DPI and quality used. Pages keep their size, files already under 500 KB are returned untouched, and the output's text is not selectable because pages become images.

How to use the Compress PDF to 500 KB

Three quick steps — free, private, right in your browser.

1

Add the PDF

Drop a scanned or photographed PDF, up to 60 pages. The target is already set to 500 KB.

2

It compresses right away

The tool finds the sharpest version that fits 500 KB, in your browser.

3

Download

Check the new size, pages and DPI, then save the PDF.

Features

  • Lands under 500 KB, or tells you why not
  • Often keeps 150 DPI on short files
  • Quality first, resolution only if needed
  • Up to 60 pages
  • Runs in your browser, no upload
  • Free, no sign-up

Use Cases

  • Long scanned documents
  • Reports and portfolios made of scans
  • Uploads with a 500 KB cap
  • Sharing big scans by email or chat

Frequently asked questions

How do I compress a PDF to 500 KB?+

Drop the PDF and it is compressed in your browser right away. Each page is drawn as an image at up to 150 DPI and the PDF is rebuilt from those images. The tool tries higher JPEG quality first and lowers the resolution only when quality alone is not enough, never below 60 DPI, where text stops being readable. You see the final size before you download.

Will a 500 KB PDF still look sharp?+

For a short scan, usually yes: 500 KB leaves room for 150 DPI and a high JPEG quality on several pages. The result line shows the DPI and quality the tool settled on, so you can see what you are getting before you download.

Will the text in my PDF still be selectable?+

No. Every page is saved as an image, so text can no longer be selected, copied or searched, and links are removed. For scanned certificates, marksheets and photographed documents, which are images already, nothing visible changes. For a PDF made in a word processor, keep the original as well.

Is my PDF uploaded?+

No. The PDF is read, compressed and saved on your own device. Nothing is sent to us, which matters for marksheets, IDs and other personal documents.

What if my PDF has a password?+

Remove the password first. A password-protected PDF cannot be opened in the browser without it, and the tool says so instead of failing silently.

My PDF is already under 500 KB. What happens?+

Nothing is changed. The tool says it already fits and gives you the original file back, untouched.

Related free tools

Compress PDF to 200 KB

Shrink a scanned PDF to 200 KB for an application or upload form. Pages keep their size, nothing is uploaded, and it is free with no sign-up.

Open

Reduce PDF Size in KB

Type the size you need in KB and get a PDF that fits. Free, no sign-up, nothing uploaded. Works for 100 KB, 200 KB, 500 KB, 1 MB or any size.

Open

Image to PDF

Convert images to PDF free. Combine multiple JPG, PNG or WebP images into a single PDF — each image becomes a page. Fully browser-based: no upload, no signup, no watermark.

Open

Want more power?

Unlock bulk Excel jobs, watermarking, file backup and more. Free to start.

Start for Free — No Card Required