Merge PDFs
Combine multiple documents into a single professional PDF.
Drag, reorder, and merge. 100% Local.
Secure • Fast • Reorderable
Why Use Our PDF Merger?
Combine PDFs securely in seconds. No uploads, no waiting, just instant results. Learn more in our Privacy Policy.
100% Secure
Your documents are merged locally in your browser using pdf-lib and never touch a server. No third party can access your files during the process — not even us.
Drag & Reorder
Total control over your document sequence. Drag file thumbnails into any order before merging, so your final PDF flows exactly the way you intended.
Original Quality
Merging with pdf-lib is a structural operation — it doesn't re-render or re-compress your pages. Every hyperlink, bookmark, and image retains its original resolution.
Free & Unlimited
Merge 2 files or 200 — there are no watermarks, no file size caps, and no usage limits. Because processing runs on your own device, the only limit is your computer's available RAM.
Merge in Seconds
Add Files
Select two or more PDF files from your device or drag them directly into the upload zone.
Sort Order
Long-press (mobile) or drag thumbnails to rearrange files into the exact sequence you need.
Instant Merge
Click the Merge button — pdf-lib combines everything locally on your device in seconds.
Save Result
Download your cleanly organized single PDF file directly to your device.
Common Questions
Everything you need to know about combining your PDFs. See our Privacy Policy for more details.
Yes, completely free with no watermarks, no hidden costs, and no usage limits. You can merge as many files as you need without creating an account or providing any personal information.
Absolutely. We use pdf-lib, a JavaScript library that runs entirely in your browser. Your files are processed directly on your device and are never uploaded to our servers — not even temporarily. You can verify this by turning off your internet connection after the page loads and the tool still works perfectly.
Yes. After uploading, drag and drop the file thumbnails to set your preferred sequence. On mobile devices, long-press a thumbnail for 400ms to activate drag mode, then drag to the desired position.
There is no strict file size limit because all processing happens locally on your computer. The practical limit depends on your device's available RAM. Most modern computers can comfortably merge several hundred megabytes of PDFs without any issues.
More Powerful Tools
Discover our suite of secure, browser-based tools designed to make document management effortless.
JPG to PDF
Convert JPG, PNG, or WebP images into a single PDF document instantly. No file size limits, no watermarks, 100% local.
PDF to JPG
Extract high-resolution JPG images from PDF pages. Select specific pages or convert the whole document. Free and private.
Image Compress
Reduce JPG and PNG file sizes by up to 80% without visible quality loss. Batch compress hundreds of images at once.
PDF Compress
Shrink PDF file size for email and web sharing. Smart compression keeps text sharp while reducing oversized images.
Split PDF
Extract specific pages or split by custom range. Click thumbnails to select pages visually or type ranges like 1-5, 8.
Word to PDF
Convert DOCX files to professional PDF documents with fonts, tables, and formatting preserved exactly as designed.
PDF to Word
Convert PDF files into editable Microsoft Word DOCX documents. Preserves paragraphs, tables, and text structure.