Reduce File Size Online

Reduce PDF file sizes online

Adobe Acrobat’s online services let you compress PDF files right from your browser. Use our PDF compressor to make large files smaller and easier to share.

Easy PDF Compressor

An easy PDF compressor

Drag and drop or upload a PDF document to let Acrobat reduce its size. Once compressed, you’ll find the doc simpler to work with, store, and share.

Best PDF Converter

The best PDF compressor

Adobe invented the PDF format. Use our high-quality PDF compressor to reduce the size of your files with any web browser, including Google Chrome.

Compress PDF

How to compress a PDF online

How to compress a PDF online

Follow these easy steps to compress a large PDF file online:

Click the Select a file button above or drag and drop files into the drop zone.

Select the PDF file you want to make smaller.

After uploading, Acrobat will automatically reduce the PDF size.

Sign in to download or share your compressed PDF.

Questions? We have answers.

How do I compress a PDF without losing quality?

The Acrobat online PDF compressor balances an optimized file size against the expected quality of images, fonts, and other file content. Just drag and drop a PDF into the tool above and let Acrobat reduce the file size without compromising quality.


For more refined control of optimization settings, you can try Adobe Acrobat Pro DC for free for seven days. Acrobat Pro DC for Mac or Windows lets you customize PPI settings for color, grayscale, and monochrome image quality. You can also edit PDF files, edit scans with OCR, convert PDFs, convert PNGs and other image file formats, organize and rotate PDF pages, split PDFs, and more with an Acrobat Pro subscription.

What size PDFs can I compress?

The Acrobat online PDF compressor tool can compress a PDF of up to 2GB.

How do I check my PDF file size?

To check the file size of a PDF, open the file in Adobe Acrobat or free Adobe Acrobat Reader. Then choose File > Properties. You’ll see the file size listed in the Document Properties Description tab.

Questions? We have answers.

Convert Files to PDF Online

Convert and compress with ease

Use Acrobat online services to convert Microsoft Word, Excel, and PowerPoint files to PDF. You can convert JPGs and compress files too.

Do more with PDFs

Do more with your PDFs

Do you need to convert, combine, sign, and share files? Subscribe to Adobe Acrobat PDF Pack for a set of online tools.

Best PDF Converter

Get the best with Adobe

Use the highest quality online PDF tools from the inventor of PDF. Sign in to do more with your stored files.

Reduce File Size Online

Reduce PDF file sizes online

Adobe Acrobat’s online services let you compress PDF files right from your browser. Use our PDF compressor to make large files smaller and easier to share.

Easy PDF Compressor

An easy PDF compressor

Drag and drop or upload a PDF document to let Acrobat reduce its size. Once compressed, you’ll find the doc simpler to work with, store, and share.

Best PDF Converter

The best PDF compressor

Adobe invented the PDF format. Use our high-quality PDF compressor to reduce the size of your files with any web browser, including Google Chrome.

Compress PDF

How to compress a PDF online

How to compress a PDF online

Follow these easy steps to compress a large PDF file online:

Click the Select a file button above or drag and drop files into the drop zone.

Select the PDF file you want to make smaller.

After uploading, Acrobat will automatically reduce the PDF size.

Download your compressed PDF file or sign in to share it

Questions? We have answers.

How do I compress a PDF without losing quality?

The Acrobat online PDF compressor balances an optimized file size against the expected quality of images, fonts, and other file content. Just drag and drop a PDF into the tool above and let Acrobat reduce the file size without compromising quality.


For more refined control of optimization settings, you can try Adobe Acrobat Pro DC for free for seven days. Acrobat Pro DC for Mac or Windows lets you customize PPI settings for color, grayscale, and monochrome image quality. You can also edit PDF files, edit scans with OCR, convert PDFs, convert PNGs and other image file formats, organize and rotate PDF pages, split PDFs, and more with an Acrobat Pro subscription.

What size PDFs can I compress?

The Acrobat online PDF compressor tool can compress a PDF of up to 2GB.

How do I check my PDF file size?

To check the file size of a PDF, open the file in Adobe Acrobat or free Adobe Acrobat Reader. Then choose File > Properties. You’ll see the file size listed in the Document Properties Description tab.

Questions? We have answers.