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Combine several PDF files into a single document. Drag to reorder pages, remove files you do not need, and download the merged PDF — all without uploading anything.
Last updated 5 September 2026
Drag & drop files here, or
Up to 20 PDFs, 50 MB each
Drop your PDF files onto the upload area or browse to select them. Add as many as you need.
Drag the file cards to arrange them. The merged document follows this order, top to bottom.
Press Merge PDF. The combined file is built in your browser and downloads immediately.
The three files are read into memory, their pages are copied sequentially into a new document, and the 6-page result is saved. Total time is under a second for typical files.
Merging is useful whenever a single logical document lives in several files: a signed contract plus its annexures, a set of scanned receipts for an expense claim, or chapters exported separately from a word processor.
Because the merge happens locally, page text, form fields and bookmarks from each source file are carried into the result rather than being flattened into images.
A merge usually fails for one of two reasons: one of the source files is corrupted or was never really a PDF (a renamed image, or a download that was cut off), or the combined document has grown large enough that your browser tab is running low on memory — far more likely on an older phone than a desktop.
If a specific file is the problem, remove it from the list and merge the rest; the file causing the error is often the smallest one relative to its page count, a common sign of a broken export. If it is a memory issue instead, merge in two smaller batches and then merge those two results together.
There is no fixed limit. Very large merges are bounded only by your device’s available memory. On a phone, keep the total under roughly 100 MB.
No. Pages are copied as-is. Text stays selectable and images keep their original resolution.
You need to remove the password first. Encrypted files cannot be read without it, and this tool does not attempt to bypass protection.
Internal page structure and most links are preserved. Some complex interactive features may not carry over.
Yes — the tool works the same in a mobile browser as on desktop, including picking files from your camera roll or a cloud drive app. Very large merges just take a little longer on a phone's more limited memory.