Free · no signup · nothing uploaded
Shrink a PDF's file size with a quality-preserving pass, right in your browser — you'll see the before/after size before you download.
Short answer
To compress a PDF, choose your file and it's re-optimized in your browser — you'll see the before and after size. It never makes the file bigger, keeps text and images intact, and nothing is uploaded. Free and fully in-browser.
No. The PDF is re-optimized entirely in your browser and never sent to a server — safe for private files and works offline once loaded.
It depends on the file. PDFs bloated with redundant structure or exported inefficiently can shrink noticeably; already-optimized or plain-text PDFs may shrink little. The tool always returns whichever is smaller — original or compressed — so it never makes your file bigger.
The in-browser lossless pass (restructuring the file) keeps text and images identical. It's a safe, quality-preserving optimization rather than aggressive down-sampling.
If it's mostly text or was already optimized, there's little redundant data to remove. The biggest savings come from PDFs with bloated internal structure.
Yes — no signup, no watermark, and it runs entirely in your browser.
Your PDF is compressed entirely in your browser and is never uploaded. The lossless pass preserves content; savings vary by file. Provided free and ad-supported, without warranty.