PDF Compressor
Shrink a PDF with a preset, or set the exact size you need, such as 500 KB.
PDF Studio Guide
How to Compress a PDF
Use this when a PDF is too big to email or to upload to a form with a size limit. Each page is redrawn as a compressed image, which is what makes the file much smaller. Text stays readable, but it can no longer be selected or searched, so keep your original copy.
- 01
Select PDF File
Choose your PDF or drag it onto the page.
- 02
Pick a Preset or a Target Size
Choose Less, Recommended or Extreme compression, or switch to Target File Size and enter the size you need in KB or MB.
- 03
Save Compressed PDF
Download the smaller PDF. The tool shows the old and new sizes so you can check it fits your limit.
Frequently Asked Questions
Answers about this tool.
How does PDF compression reduce file size?
Each page is rendered and saved again as a compressed JPEG image. A stronger preset uses a lower resolution and quality. If that would not make the file smaller, the original pages are kept instead, so the result is never larger than what you started with.
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