Compress PDF.
Reduce PDF file size by optimising structure. Typical reduction 5–30%. Free online tool, no sign-up required.
Ad slot: horizontal
Drop files here or click to browsePDF — max 100MB
Reduces PDF file size by optimising internal structure. Expected reduction: 5–30%. Does not re-encode images or fonts.
How to use
Upload a PDF.
Click Compress PDF.
Download the optimised PDF — typically 5–30% smaller.
Frequently Asked Questions
Why only 5–30% reduction?
This tool optimises the PDF internal structure using pdf-lib. It does not re-encode embedded images or subset fonts, so reduction is modest. For larger reductions, reduce image resolution before creating the PDF.
Will the visual quality change?
No. Only the file structure is optimised — no image or font quality is affected.
Ad slot: horizontal