Merge PDF

Combine your PDF documents

1. Add between two and twenty PDFs. The limit is 20 MiB per file, 50 MiB for the whole list and 500 pages in total. Protected documents, forms, signatures and non-link annotations are not supported.
2. Use Move up and Move down to set the file order. Every page of the first file comes before every page of the next file. Adding the same file twice intentionally repeats its pages.
3. Select Merge PDFs, then download the result. Check the downloaded page order and appearance before sharing it. Editing the file list removes the previous result; Clear removes the list and output.

What the merged file keeps

The merger copies static page content instead of taking screenshots. Ordinary text, vector artwork and images are not intentionally rasterized or resized. Different page sizes, page boxes and rotations are kept. A scanned page remains a scanned image; no OCR is added.

Pages are appended by file order. Pages inside a file are not rearranged, removed or renumbered in the printed content. If each source has a printed page 1, those printed numbers remain.

Link annotations become non-clickable while their page appearance is retained. Forms, signature-related structures and other annotations such as comments or highlights are rejected so that the tool does not silently discard those visible features.

Source bookmarks, attachments, accessibility tags, document page labels and source metadata are not assembled into the result. The output is a new document, not a PDF/A or PDF/UA preservation workflow or a way to maintain a digital signature.

Page-order examples

If a two-page cover document is followed by a three-page report, the result has five pages: cover pages 1 and 2, then report pages 1, 2 and 3.

Moving the report above the cover changes the result to report pages 1, 2 and 3, followed by cover pages 1 and 2. The order inside each source remains unchanged.

A portrait page followed by a landscape page keeps those different layouts. The merger does not stretch pages to one paper size. Adding the same two-page document twice produces four pages, not a deduplicated two-page result.

Check whether your PDFs fit this tool

Use unencrypted static documents. Password-protected files, form dictionaries, signature indicators and non-link annotations are rejected. If needed, make a suitable static copy in the original application and inspect it before merging. The tool does not unlock, flatten or verify a signature for you.

Complex or malformed PDFs may fail even within the limits, and a browser can run out of memory. Merging does not promise a smaller file. It is not malware scanning, secure redaction or forensic metadata removal; review the result in a trusted PDF reader.

Local file processing

The tool reads and combines selected files in a local browser worker without intentionally uploading them. No cloud picker or file history is added. Normal site services still exist. Clearing releases owned file references and output URLs but does not promise secure erasure from browser memory or remove a downloaded file.