Compress PDF
Make PDFs smaller without turning text into blurry images.
Only supported JPEG images are recompressed. Text-only PDFs may have the same size at every level. If the result grows, we keep the original.
How to Compress PDF Files Online
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Compression level
Compress PDF
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Why Compress PDFs with SonuPDF?
Compression level
High quality: Lossless: keeps text, graphics and image pixels unchanged. Balanced: Moderate JPEG compression. Text stays sharp; image quality may change slightly. Strong: Stronger JPEG compression for smaller files. Images and scanned text may lose detail.
No smaller result
Only supported JPEG images are recompressed. Text-only PDFs may have the same size at every level. If the result grows, we keep the original.
Frequently Asked Questions
High quality: Lossless: keeps text, graphics and image pixels unchanged. Balanced: Moderate JPEG compression. Text stays sharp; image quality may change slightly. Strong: Stronger JPEG compression for smaller files. Images and scanned text may lose detail.
Only supported JPEG images are recompressed. Text-only PDFs may have the same size at every level. If the result grows, we keep the original.