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Compress PDF

Reduce your PDF file size by compressing page images. Choose a quality level or set a target size in KB or MB.

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Drop a PDF here

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Select PDF
Add a PDF to compress.

✅ PDF compressed!

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Free Online PDF Compressor

Large PDF files can be slow to email, upload, or share. LovePDFImg's PDF Compressor re-renders each page as a compressed image and assembles a new, smaller PDF. This works especially well for scanned PDFs, photo-heavy documents, and any PDF where reducing image quality is an acceptable trade-off for a much smaller file. Use the quality slider to balance size and readability, or switch to target size mode to aim for a specific KB or MB output.

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How to Compress a PDF

  1. 1Upload your PDFDrop a PDF file or click to browse.
  2. 2Choose quality or target sizeDrag the quality slider, or switch to target size and enter a KB/MB value.
  3. 3Click Compress PDFEach page is re-rendered and bundled into a new smaller PDF.
  4. 4DownloadSave your compressed PDF.

Frequently Asked Questions

It re-renders each page as a compressed JPEG image and rebuilds the PDF with those images. This reduces file size significantly for PDFs that are mostly scanned images or photos.
This compression method works best on image-heavy or scanned PDFs. For PDFs with mostly text and vector content, the text may be rasterized, so use a moderate quality setting to keep text legible.
Yes. Switch to Target Size mode and enter your desired output size in KB or MB. The tool will find the closest quality setting to reach that target.
No. PDF Compressor processes everything locally in your browser using PDF.js and PDF-Lib. Your file is never uploaded anywhere.