PDF Compressor
Compress PDF files online for free — re-save PDFs with optimized object streams to shrink file size. Runs in your browser, nothing uploaded.
Re-saves the PDF with optimized object streams. Helps most with unoptimized PDFs; already-optimized files may barely shrink. Nothing is uploaded.
How to use
Upload a PDF, click Compress — the tool re-saves it with optimized object streams — then compare before/after sizes and download the smaller file.
Frequently asked questions
Is the PDF compressor free?
Yes, free with no limits or signup.
Are my PDFs uploaded?
No. Compression happens locally in your browser using pdf-lib.
How much smaller will my PDF get?
It depends on the file. Unoptimized PDFs with redundant objects can shrink noticeably; already-optimized PDFs may barely change. Before/after sizes are shown so you can decide.
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