Compress PDF

Reduce PDF file size by compressing images, right in your browser.

Runs in your browser — your data never leaves your device

Choose a PDF

Choose a file or drag and drop

PDF files up to 200MB

Your files are processed entirely in your browser and are never uploaded to a server.

Shrink a PDF so it fits under email and upload limits. Choose how much to compress and download the smaller copy; the file is processed on your device, so confidential documents stay private.

How to Compress a PDF

Choose the PDF you want to make smaller.
Pick a compression level. Recommended suits most documents.
For scanned documents, turn on Convert pages to images for the biggest reduction.
Click Compress PDF, check the new size, and download the result.

What Makes a PDF Large?

Photos and scanned pages account for most of a PDF’s size. A single phone photo can be several megabytes, while a page of text is only a few kilobytes. This tool finds the embedded images, scales down any that are larger than needed for on-screen reading and printing, and saves them as efficient JPEGs. Text, fonts, links and vector graphics are kept exactly as they were, so the document stays sharp and searchable.

Choosing a Compression Level

Light keeps images close to their original quality and suits documents you plan to print. Recommended balances quality and size and works for most sharing and uploads. Strong gives the smallest files and is best when you need to get under a strict size limit. If a PDF is mostly text it may already be close to its minimum size; scanned documents benefit most from converting pages to images, which rebuilds each page as a single compressed picture.

Frequently Asked Questions

How do I compress a PDF?

Choose your PDF, pick a compression level (Recommended suits most files) and click Compress PDF. You will see the new size before downloading the smaller copy.

How much smaller will my PDF get?

It depends on what is inside. PDFs full of photos or scans often shrink by 50–90%, while text-only PDFs are usually already close to their minimum size.

Will compressing a PDF reduce its quality?

Only images are re-compressed; text, fonts and vector graphics stay exactly as they were. Light keeps images near original quality, while Strong trades image detail for the smallest file.

What does "Convert pages to images" do?

It renders every page as a single compressed image. This gives the biggest reduction for scanned documents, but the text can no longer be selected or searched.

Is it safe to compress confidential PDFs here?

Yes. Compression runs entirely in your browser, so the file is never uploaded to a server.

Merge PDF

Combine multiple PDF files into one document.

Split PDF

Extract pages or split a PDF into multiple files.

JPG to PDF

Combine JPG, PNG and other images into a PDF.

Image Compressor

Shrink image file size and compare the result side by side with the original before you download.

How to Compress a PDF

What Makes a PDF Large?

Choosing a Compression Level

Frequently Asked Questions

How do I compress a PDF?

How much smaller will my PDF get?

Will compressing a PDF reduce its quality?

What does "Convert pages to images" do?

Is it safe to compress confidential PDFs here?

Related Tools

How to Compress a PDF

What Makes a PDF Large?

Choosing a Compression Level