Merge PDF Files

Choose a useful order before you merge

The order of the files in the list becomes the order of the pages in the finished PDF. Add a cover sheet or application form first, then place supporting statements, receipts, and certificates after it. If a source PDF already contains several pages, all of its pages stay together as one block.

Before downloading, check that the selected files belong in the same document and that no confidential page was added by mistake. Keep your original files unchanged until you have opened the merged copy and confirmed that it contains the expected pages.

What to expect from the merged PDF

Merging joins the selected PDF pages; it does not rewrite their text or intentionally lower image quality. A merged document can still be large because the original scans and embedded images are carried into the result. If a recipient has a size limit, merge the required pages first and then try the Compress PDF tool.

Some PDF features, such as bookmarks, interactive form fields, or digital-signature validation, may not behave the same after files are combined. Review important forms in a PDF reader and do not use a merged copy as proof that an existing digital signature remains valid.

If a file will not open

A PDF protected by a password cannot be merged until you unlock it with a PDF application that you trust and are authorized to use. If a file reports an error, open it in its original viewer and export or print a fresh PDF copy. On a phone or a low-memory device, try fewer files in each batch and close other tabs before processing.