Batch Compress PDFs
Run lossless compression across multiple PDFs in one go — output as a single .zip.
1. Upload your files (min 2)
How does the Batch Compress PDFs work?
Compress a stack of PDFs in one click. Each file is run through the same lossless pdf-lib pass that powers Compress PDF — duplicate objects and structural overhead are removed, and the file is re-saved with object streams. The compressed copies come back as a single .zip with each file suffixed "-compressed.pdf". Expect 10–40% savings on text-and-vector PDFs (Word exports, web reports) and only modest savings on image-heavy PDFs (scanned documents).
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.
Frequently asked
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