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Combine multiple PDF files into one document instantly. Drag to reorder, merge in seconds — fast, private and processed entirely in your browser.
Drag & drop your PDF files or click to browse — combine multiple PDFs into one
Three simple steps to combine your PDF files in seconds.
Upload Your PDFs
Drag & drop your PDF files into the upload area or click to browse. You can add as many files as needed and add more at any time before merging.
Arrange the Order
Drag files up or down in the list to set the exact page order you want. The merged PDF will follow the order shown — file 1 appears first.
Merge & Download
Click 'Merge & Download' and your combined PDF is instantly ready. It's saved to your device automatically — no email or account required.
Everything you need to combine PDFs quickly and safely.
Drag-and-Drop Reorder
Rearrange PDF files in any order before merging using intuitive drag-and-drop controls.
Merge Unlimited PDFs
Combine as many PDF files as you need into a single document without any restrictions.
Instant Processing
PDFs are merged directly in your browser at full speed — no waiting for server uploads.
One-Click Download
Get your merged PDF instantly with a single click, auto-named with today's date.
Duplicate Detection
Automatically skips duplicate files by name so your merged PDF stays clean.
Add More Anytime
Drop additional PDFs into the editor at any time before merging — no need to start over.
Handles Corrupted Files
Shows a clear per-file error message if a PDF is corrupted or password-protected.
100% Private
Files never leave your device. All processing happens locally in your browser.
Everything you need to know about merging PDFs online.
Upload your PDF files by clicking 'Choose PDF Files' or dragging and dropping them. Arrange them in the order you want using drag-and-drop, then click 'Merge & Download' to instantly combine them into a single PDF.
Yes, WebAuzar's PDF merger is 100% free with no hidden charges, no signup, and no usage limits. You can merge as many PDFs as you need.
There is no hard limit on the number of PDFs you can merge. You can add as many files as needed. However, very large files or a large number of files may take more time depending on your device's processing power.
Yes. After uploading, you can drag and drop the files in the list to set any order you want. The merged PDF will follow exactly the order shown in the list.
Absolutely. All merging happens entirely in your browser using client-side JavaScript. Your files are never uploaded to any server — they never leave your device, so your data stays completely private.
Password-protected PDFs cannot be processed by this tool. You will see an error message for that specific file. Please remove the password protection before uploading.
There is no strict file size limit enforced by the tool — it depends on your browser and device memory. For best performance, we recommend keeping individual files under 50MB.
The merged output is always a standard PDF file, automatically named merged-[date].pdf and downloaded directly to your device.
Yes. After uploading your initial files, you can drag more PDFs onto the drop zone inside the editor or click the add-more button to include additional files before merging.
Yes, WebAuzar's PDF merger works on all modern browsers including mobile browsers on Android and iOS. The interface is fully responsive and touch-friendly.
Free, instant, and completely private. No signup required — just upload and merge.
Merge PDFs Now