Compress PDF
Reduce the size of an image-heavy PDF for email or upload forms. Choose the balance between a smaller file and sharper pages before downloading the result.
How to use Compress PDF
- Choose one PDF from your device.
- Select an output quality and rendering-detail level. Start with Balanced and Sharp.
- Select Compress and download, then check the displayed size reduction and open the new PDF to confirm readability.
Related PDF tools
What this tool is best for
- Scanned PDFs and PDFs that contain large photographs.
- Creating a smaller attachment for email or an online form.
- Reducing a PDF locally without sending its contents to a server.
Tips for a better result
- Start with Balanced quality. Choose Small file only when size matters more than fine detail.
- Standard rendering creates a smaller result; Extra sharp keeps more detail but can increase file size.
- Open the result and zoom in on small text before deleting the original.
Know before you start
- Docsy rebuilds every page as a compressed image, so searchable text, links, form fields, and selectable text become part of the page image.
- A PDF that is already optimized may not become smaller.
- Very large or long PDFs can use significant browser memory, especially at Extra sharp detail.
Common problems and fixes
- If the result is larger, choose a lower quality or Standard rendering detail.
- If small text looks blurry, choose Higher quality or Sharp rendering detail.
- If the browser struggles, close other tabs or split the PDF and compress the smaller sections separately.
Frequently asked questions
How much smaller will my PDF become?
It depends on the source. Image-heavy and scanned PDFs usually offer more room for reduction than PDFs that are already optimized.
Will text remain searchable?
No. This local compressor rasterizes each page, so searchable text and interactive forms become images.
Is my PDF uploaded?
No. The PDF is processed locally in your browser.
Privacy note: Docsy labels tools that process locally. File contents are never included in Google Analytics.
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