Compress Large PDF Files

This big PDF compressor tool works right in your browser. Make a PDF smaller while keeping text sharp. Files never leave your device. No sign-up, no watermark.

or drop a file here

Files stay on your device. Nothing is uploaded.

How to compress your PDF

  1. 1

    Add your PDF.

  2. 2

    Choose a compression level or a target size.

  3. 3

    Click Compress and download the smaller PDF.

Compressing large PDF files

Files of hundreds of megabytes are usually high-resolution scans or photo books. Because processing happens on your device, there is no upload wait: a 200 MB file starts compressing immediately.

On a phone, very large files may run out of memory; a laptop or desktop handles them more comfortably.

Private by design

Your file is processed by your own browser, in memory. It is never uploaded, stored or seen by anyone, and the page’s security policy blocks it from sending data to other servers.

Frequently asked questions

How do I compress large PDF files?

Add your PDF. Choose a compression level or a target size. Click Compress and download the smaller PDF.

How can i compress a large PDF file?

Add the PDF, choose a compression level (or a target size), then click Compress PDF. The result shows the before and after size.

Will compression make my PDF blurry?

Text and vector graphics are never touched, so they stay sharp. Only images are recompressed. Light keeps images close to the original; Strong is visibly softer on photos.

Why didn’t my PDF get much smaller?

PDFs made from text (exported from Word, for example) contain few images, so there is little to compress. Large savings come from scans and photos.

How small does a PDF need to be for email?

Gmail and Yahoo accept attachments up to 25 MB, Outlook.com up to 20 MB. Staying under 10 MB is safest because some company mail servers set lower limits.

Is it safe to use with confidential documents?

Yes. The file is opened by your own browser and processed in your device’s memory. It is never uploaded, so no server, including ours, ever receives a copy. That makes it suitable for contracts, IDs, medical or bank documents.

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