PDF-03
Compress PDF
Compress PDF rebuilds a PDF’s internal structure to reduce file size — useful when a file is too large to email or upload. It works best on text-heavy PDFs; files packed with high-resolution images will see smaller gains, since this tool optimizes structure rather than re-encoding embedded images.
Drag files here, or click to choose
Accepts: PDF · one file
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How it works
- Upload the PDF you want to shrink.
- Click "Run tool" — the file is rebuilt with optimized internal object streams.
- Download the compressed file and compare the size against the original.
Frequently asked
Why didn’t my file get much smaller?
If most of the size comes from embedded images, structural optimization alone won’t recover much space — the images themselves would need to be re-encoded at a lower resolution.
Will compressing lose any content?
No text, images, or pages are removed — only the internal file structure changes.