Compress PDF
Reduce the size of your PDF files while maintaining quality
Compress PDF
Local processing · Up to 150 MB
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Free Online Compress PDF
Compress large PDFs locally without uploading them. Preserve text with structural optimization, or turn scanned pages into balanced or smaller JPEG images. Image modes remove selectable text, links and forms. Savings depend on the document; when compression would increase its size, the original is retained. Files up to 150 MB are accepted, subject to available device memory.
Why use Compress PDF
- Three modes: preserve text, balanced scans and smallest size
- The file is processed in your browser, not uploaded to a server
- Shows original size, final size and the real percentage saved
- Great for shrinking PDFs before sending them by email
- No usage limit and no watermark
How to use it in 3 steps
- 1
Upload your PDF file
Drag and drop or select the PDF you want to shrink.
- 2
Choose a compression level
Choose preserve text or a scan mode and review its quality warning.
- 3
Compress and download
Generate the compressed PDF and download it; you'll see the real reduction percentage achieved.
Questions about Compress PDF
How much does this tool reduce file size?
There is no guaranteed percentage. Savings depend on the content and previous compression. The tool reports actual savings and never returns a larger file.
Is my PDF uploaded to a server to compress it?
No, compression happens directly in your browser. The file is never sent to an external server.
Which compression level should I choose?
Preserve text avoids rasterizing pages. Balanced and smallest modes turn pages into images, useful for scans but removing selectable text, links and forms. Modifying a PDF can invalidate digital signatures.
Why is the reduction smaller than expected on some PDFs?
An already optimized PDF may not shrink. Preserve text does not recompress images. Scan modes can reduce image-heavy documents at the cost of quality and interactive features.
Is Compress PDF free?
Yes, Compress PDF from WebHerramientas is 100% free. No registration or subscription required. You can use it as many times as you need at no cost.
Is it safe to use Compress PDF online?
Yes, all information is processed directly in your browser. We do not store or send your data to any external server.
Does Compress PDF work on mobile?
Yes, the tool is fully responsive and works on any device: phone, tablet or computer with a modern browser.