Compress PDF
FreeReduce PDF file size with image quality and font subsetting options
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All PDF ToolsHow it works
1
Upload
Add the PDF file you want to make smaller.
2
Select
Pick a compression preset: light for minimal quality loss, medium for balanced results, or heavy for maximum size reduction.
3
Download
Save the compressed PDF and see the size reduction compared to the original.
Frequently asked questions
How does PDF compression work?+
The tool recompresses embedded images at a lower quality level and strips unnecessary metadata such as edit history and unused fonts. Text and vector elements stay untouched.
What is the difference between the compression presets?+
Light mode keeps images close to original quality with modest size savings. Medium balances quality and size. Heavy applies stronger image compression for the smallest possible file.
Will text in my PDF become blurry after compression?+
No. Text rendered as fonts or vectors is not affected by compression. Only embedded raster images are recompressed, and the light preset keeps those nearly identical to the originals.
Is my PDF sent to a remote server for processing?+
No. Compression is handled entirely in your browser. The file never leaves your device, so sensitive documents stay private.
Can I compress a PDF that is already compressed?+
Yes, though the savings will be smaller. If images were already compressed aggressively, a second pass has less room to reduce size further.