Compress a PDF
Shrink a PDF by compressing the images it contains and optimizing its internal structure, without altering the text or layout.
Accepted source formats
How it works
Drop your PDF: embedded images are detected automatically.
Pick a compression level based on your use case (email, archiving, printing).
Download the compressed PDF, typically 40-90% smaller depending on its content.
Common mistakes
- Using a source file of poor quality.
- Publishing without checking the final result.
- Confusing file size, dimensions and quality.
- Overwriting the original file without keeping a copy.
Pro tips
- Always keep an original version.
- Test several settings before downloading.
- Use WebP for the web when possible.
- Choose descriptive file names for SEO.
Privacy and file handling
File handling depends on the selected tool and format. For sensitive files, review the tool information before starting the operation.
How to convert a PDF file to Compress a PDF?
Drag and drop or select your PDF file from your device. Click "Convert" and wait a few seconds. Get your converted Compress a PDF file instantly. Adjust one option at a time when possible and keep the original file, which makes it easier to compare versions if the result needs another pass.
Supported formats
Source format: PDF. Target format: Compress a PDF. Before running the tool, check the source file and define the result you actually need so that you only change settings that matter for the final use. If a file fails, try a smaller version or split it when the tool supports that workflow.
What is the maximum PDF file size?
The practical file-size limit depends on the format, browser and memory available on your device. If a file fails, try a smaller version or split it when the tool supports that workflow. Some elements may change during conversion, so open the output and check it before using or sharing it.
Which browsers are compatible?
Use a recent, up-to-date browser. Behaviour can vary with the file format, available memory and the features supported by your device. Always check the output file before sharing it. The final format should match how you plan to use it. Keep the original until you have approved the result.
Can I use the tool on mobile?
You can try the tool on a phone or tablet with a recent browser. Large files may require more memory or be easier to process on a desktop computer. Choose a file, run the conversion, then check the result before downloading it. Current quotas and higher plans are shown on the Pricing page.
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Guides and tutorials
Learn how to use our tools with our detailed guides.