Compress PDF to 100 KB

Upload your file, then choose a level and download a smaller copy.

Drop your file here to start

Supports PDF

Size up to 100 MB

Supports PDF

Size up to 100 MB

How to compress PDF to 100 KB

Choose a level by its estimate, then save the result when it meets your target.

1.🚀
Upload your file
Select the PDF file you want to make smaller from your device.
2.⚡
Pick a level
Compare the estimated sizes for High, Medium, and Low compression.
3.✅
Save the result
Download the new copy when its estimated size is close to your target.

More PDF tools you might need

An easy way to reduce PDF to 100 KB

📝

See size estimates

Each level shows an estimated PDF file size, so you can choose the option closest to the 100 KB limit.

⚡

Finish without setup

You can compress PDFs to less than 100 KB from any device with a browser, then download the result.

🎨

Balance size and quality

If your goal is to compress PDF to 100 KB without losing quality, you may need to choose a lighter setting when clear text matters most.

🔄

Try another level

Switch between High, Medium, and Low PDF compression to seek a smaller size while keeping pages easy to read.

🖋️

Keep text readable

A scanned PDF may need stronger compression because each page can contain a full-page image. Check the compressed pages to make sure the text remains readable.

📋

Work toward 100 KB

Work in your browser with no installation, then download your finished PDF when it is ready.

Frequently asked questions

Why is the file still over 100 KB?

Compression results depend on the document’s images, fonts, page count, and existing settings. Use our PDF compressor and compare all three levels. High aims for the smallest result, but a complex scanned document may still have a file size above the target.

What if the file is only a little over 100 KB?

Upload the PDF again and select a stronger compression level if the new estimate fits your limit. Our size reducer can reduce PDF size further by changing how it encodes the page content. Check the finished copy to make sure its text and images remain clear.

Are 100 KB limits usually for one image or a whole document?

The rule depends on the website or form receiving your document. Some limits apply to the complete PDF, while others apply to an image used within it. Read the upload instructions first, then open the PDF and confirm its total size before submission.

Which compression level should I choose?

Choose High when the smallest possible result matters most. Medium offers a middle ground, while Low keeps the output closer to the original at a larger size. Our PDF tool shows an estimate for each level, which helps you optimize PDF files before downloading.