Compress PDF

Compress PDF

Combine preset image downsampling/JPEG quality with content stream compression and deduplication. This is lossy for optimized images. Presets do not guarantee a target size; original returned if not smaller.

Automatic local processing
Upload → secure website queue → connected Local Processor → verified result → download. No AI is required for this tool.

Compress PDF options

Only settings that affect this tool are shown.

＋
Select fileUpload the required PDF file. Maximum 1 file(s).
Compression level

How to use Compress PDF

  1. Choose the required file or files.
  2. Select only the options that matter for this task.
  3. Start processing and download the verified result when complete.

About Compress PDF

Combine preset image downsampling/JPEG quality with content stream compression and deduplication. This is lossy for optimized images. Presets do not guarantee a target size; original returned if not smaller.

Related PDF Tools

Compress PDF to Target SizeTry up to six image-quality/size candidates from the original. Target may be impossible; choose failure or an explicitly labeled best result.Lossless PDF CompressionCompress page content streams and deduplicate PDF objects without image resampling. If the rewrite is larger, retain original bytes. Size reduction is not guaranteed.Compress PDF ImagesLossy JPEG optimization of eligible opaque RGB/gray images. Native text/vector content remains. Masked/special images are kept; image quality may decrease. Original returned if the PDF is not smaller.PDF to WordChoose full-page images for appearance, or editable native text with simplified layout. Not automatic editable table reconstruction.

Compress PDF FAQ

Does this need AI?
No. This tool runs through the deterministic Zosine Local Processor.

Is my original file changed?
No. Processing creates a separate output file.