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Compress PDF — reduce file size.
Shrink a PDF by re-encoding each page as an image. Best for scanned or image-heavy files; text becomes part of the image.
Processed in your browser. File never leaves your device.Compress reduces a PDF’s file size by rasterizing each page to a JPEG at a quality level you choose and rebuilding the document. It works best on scanned or image-heavy PDFs; because pages become images, text in the output is no longer selectable. If the result would be larger than the original, the original is returned unchanged.
How to compress pdf
- Drop or select a PDF file.
- Choose a compression level — higher means smaller and lower quality.
- Click Compress and download the smaller PDF.
Frequently asked questions
- How does the compression work?
- Each page is rendered to an image and re-encoded as JPEG, then reassembled into a new PDF. Lower levels keep more detail; higher levels shrink the file more.
- Will the text still be selectable?
- No. Pages are flattened to images, so text is no longer selectable or searchable. This is why the tool suits scanned documents best.
- What if my PDF is already small?
- If rasterizing wouldn’t make the file smaller, the tool returns your original PDF unchanged rather than producing a larger one.
- Are my files uploaded?
- No. Compression runs in your browser; the PDF is never sent to a server.