Drop a whole folder of PDFs and shrink them all in one go — each is compressed in your browser and packaged into a single ZIP. Nothing is uploaded.
or drop files / a folder here
// Benefits
Shrink every PDF in a folder in one pass, entirely in your browser.
Drop a whole folder and compress every PDF in a single run — no opening files one by one.
Every file is compressed locally in your browser and never uploaded, so confidential documents stay private.
All compressed PDFs come back in a single ZIP, ready to share or archive.
// Workflow
Built for the moment a folder of PDFs is too big to email or upload.
Drop a folder or several PDFs onto the page.
Pick a compression level and run — each file is compressed in your browser.
Download the single ZIP of smaller PDFs.
// Recommended reading
Related tools and step-by-step guides for shrinking PDFs.
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Continue ->How to shrink a PDF while keeping text and images readable.
Continue ->A structured hub for PDF tools, OCR, conversion, and AI document paths.
Continue ->Drag your PDFs onto the page — or drop a whole folder, or use "Choose folder" — and any non-PDF files in that folder are filtered out automatically. Pick a compression strength ("Light", "Recommended", or "Strong"), then click "Compress all". Each file is processed one by one, and when it finishes you click "Download ZIP" to get them all back in a single archive.
No. This is a 100% client-side tool: every PDF is read and compressed right inside your browser, and nothing is ever sent to any server. Your files never leave your device, which is also why you can use it on confidential documents without worry.
You get a single ZIP file (dockdocs-compressed.zip). Inside it, each PDF keeps its original name with "-compressed" added before the extension — so report.pdf becomes report-compressed.pdf. Each row also shows how much that file shrank, and the download button shows the overall size reduction.
You can add up to 30 PDFs per batch. There's no fixed per-file size cap — because everything runs in your browser, the real limit is your device's memory. Big or numerous files still work, they just take longer to process on a weaker machine.
Compression works by rendering each page to an image, which is great for scans and image-heavy PDFs but does little for files that are mostly plain text — there's simply not much to squeeze out. If a file barely changes, that's expected; try "Strong" for a bit more, but text-only PDFs are already close to their minimum size.
Yes, it's completely free — no signup, no watermark, no daily limit. Just open the page and start compressing.
This tool runs entirely in your browser. Your file never leaves your device — it isn't uploaded to any server.
Check for yourself: open your browser's developer tools (F12, or right-click → Inspect) → the Network tab → then run this tool. You won't see your file uploaded anywhere, because the work happens locally on your device.