Combine supplier invoices into a single PDF
Expense claims and bookkeeping often ask for every supporting document in one attachment. Suppliers, however, send each invoice as its own PDF, and the folder quickly fills with dozens of small files.
Merging them into one PDF, in date order, gives your accountant or finance team a single file to review and archive. Because merging runs in your browser, financial documents are not uploaded.
Many finance teams prefer one file per month or per claim rather than one enormous archive. Grouping documents that way keeps each PDF small enough for email, makes it easy to find a specific invoice later, and matches how most accounting software and expense tools expect attachments. If your company asks for invoice numbers in the file name, add them before you merge so the order is obvious.
Step by step
- Collect the invoices for the period in one folder.
- Open Merge PDF and add them all.
- Add them in date order, or the order your expense form lists them; files are merged in the order shown in the list.
- Merge, download and give the file a clear name such as expenses-2026-10.pdf.
Tips
- Receipts photographed on your phone can be turned into PDF first with JPG to PDF, then merged with the rest.
- If the combined file is too large for email, run it through Compress PDF.
- Keep the individual originals as well; some auditors ask for them separately.
Questions
- Is there a limit on how many invoices I can merge?
- You can add many files; the practical limit is your device's memory and each file's size limit shown on the tool.
- Are links and text in the invoices kept?
- Yes. Pages are copied as they are, so text stays selectable and searchable.
- Can I remove a page I added by mistake?
- Remove it from the list before merging, or use Delete PDF pages on the merged file.