Merge PDF
Combine multiple PDF documents into a single unified file in your chosen order.
Drop your PDF files here
or browse files from your computer or phone
How to use Merge PDF
Select or drag and drop two or more PDF files from your device.
Reorder the files using drag handles or arrow buttons to match your preferred sequence.
Click 'Merge PDF' to assemble the new document instantly in your browser memory.
Download your merged PDF file with zero server uploads.
Frequently Asked Questions
Are my documents uploaded to a server?
No. Aback PDF operates entirely on your device inside your browser. Your files never leave your computer or phone.
Is there a limit to how many PDFs I can merge?
You can merge dozens of files at once, bounded only by your browser's available memory. For most modern devices, merging 50+ documents is fast and smooth.
Will the original quality or formatting be preserved?
Yes. Structural PDF merging preserves original vector artwork, text crispness, hyperlinks, and embedded fonts without re-compressing.
Can I merge password-protected PDFs?
Documents must be unlocked before merging. If a document has an open password, unlock it first so your browser can access its page structure.
Does merging work on mobile browsers?
Yes. Aback PDF runs on iOS Safari, Android Chrome, and all modern mobile browsers.
Is this merge tool free and watermark-free?
Yes, 100% free with no page limits, no subscriptions, and zero watermarks stamped on your documents.
More Free Browser PDF Tools
Every tool runs 100% locally in your browser memory with zero server uploads.