How do I reduce PDF size on a Mac?

Open Safari or Chrome on your Mac, go to filecrisp.com, drop your PDF onto the compress tool, choose your compression level, and download. It's faster than any Mac-specific solution and requires no software installation. macOS Preview's compression is often poor by comparison.

How do I compress a PDF on Windows?

Open Edge or Chrome on Windows, go to filecrisp.com, and use the compress tool. Windows doesn't have a built-in PDF compressor — FileCrisp fills this gap without requiring Adobe Acrobat or any paid software.

How do I reduce PDF size on my phone?

Open any modern mobile browser (Safari, Chrome, or Firefox), go to filecrisp.com, and use the PDF compressor. It works on both iPhone and Android. Large PDFs may take slightly longer on older phones but will complete.

What is the easiest way to reduce PDF file size?

The easiest method for most people is FileCrisp: open filecrisp.com in any browser, drop in your PDF, choose 'Balanced' compression, and download. No install, no account, no upload. Done in under 30 seconds on any device.

PDF ToolsMay 20267 min read

Reduce PDF File Size
on Mac, Windows & Mobile.

Whether you're on a Mac, Windows PC, or phone — FileCrisp compresses any PDF in your browser. No software to install, no OS-specific steps, same result everywhere.

Mac

FileCrisp in Safari or Chrome

< 30 sec

Windows

FileCrisp in Edge or Chrome

< 30 sec

Mobile

FileCrisp in any mobile browser

< 30 sec

Compress PDF Free

Maximum PDF size reduction

Strong mode on scanned documents

Platforms supported

Mac · Windows · Mobile — all browsers

Software to install

Open your browser and go

Note

Cross-device workflow: Compress on your phone, download the smaller PDF, and attach it to an email or upload it. The compressed PDF is identical across all devices and PDF readers.

Compress your PDF on any device — free

Works on Mac, Windows, iPhone, and Android. No install, no account.

Free forever

No uploads · 100% private

Compress PDF Free

FAQs

Frequently Asked Questions

Everything you need to know — answered plainly.

Reduce PDF Size — Any Device

Mac, Windows, iPhone, Android — works in any browser. Free and private.

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No account needed

Files stay on your device

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Reduce PDF File Sizeon Mac, Windows & Mobile.

Frequently Asked Questions

How do I reduce PDF size on a Mac?

How do I compress a PDF on Windows?

How do I reduce PDF size on my phone?

What is the easiest way to reduce PDF file size?

Reduce PDF Size — Any Device

Reduce PDF File Size
on Mac, Windows & Mobile.