asantoolMerge PDF files
Combine several PDFs into a single document. Drag the files into the order you want and download the result. Pages are copied across untouched, so text stays selectable and nothing is re-encoded.
Drop the PDFs you want to combine
PDF · several at onceUp to 100 MB · Your files never leave your device4 steps, no waiting.
- 01Add your PDFsDrop in two or more files. You can keep adding more at any point.
- 02Put them in orderDrag a file up or down, or use the arrows. The order in the list is the order in the finished document.
- 03MergeEverything is combined in one pass, in your browser.
- 04DownloadOne PDF, containing every page. Your originals are untouched.
Common questions
Does merging reduce quality?
No. Pages are copied between documents rather than re-rendered, so text stays selectable, fonts stay embedded and images keep exactly the pixels they had. The merged file is as good as its sources.
How many PDFs can I merge at once?
Up to twenty at a time. The limit is about your device's memory rather than the tool — very large documents use more of it, so a laptop copes with more than an old phone.
Will bookmarks and form fields survive?
Page content, text and images survive intact. Interactive extras like bookmarks, form fields and annotations may not carry over, which is a limit of copying pages between documents rather than something you can turn on.
Is my document uploaded anywhere?
No. Every PDF tool here runs inside your browser. The file is read from disk, worked on in memory, and written back out — it is never sent to a server. That matters more for documents than photos: contracts, statements and ID scans are exactly the things you should not be uploading to a stranger's website.