Combine invoices

Why this works

Our merge tool combines every invoice into one PDF, sorted by your chosen order (alphabetical, by date, or as you drag them). Add page numbers and a cover page in the same step.

Bookkeeping workflows tend to fragment naturally. Receipts come in from email, from photo apps, from supplier ERP exports, from expense-tracking software. Each arrives as a separate PDF. By month-end you have 30, 50, or 200 separate files — a folder of fragments where the accountant or auditor wants one consolidated document. Combining them by hand using Preview or Adobe Acrobat means dragging files into order, hoping you didn\'t miss one, and producing an output that\'s hard to reorder if you need to correct it later.

What the combine workflow handles. Bulk upload: drop an entire folder or ZIP of invoice PDFs in one drag; up to 100 files on Pro accounts. Automatic sorting: alphabetical (good for vendor-grouped review), by detected invoice date (good for chronological reconciliation), or in upload order (when you\'ve already organised externally and just want fast assembly). Page-break handling: each invoice starts on a fresh page — no two invoices share a page so the accountant can scroll without confusion. Page numbering: automatic page numbers added at the bottom of every page so the consolidated PDF is referenceable ("see page 47 of the invoice bundle"). Cover page: optionally insert a title/summary page at the start that lists the included invoices, vendors, and total page count.

What to include vs exclude. Include real invoices and receipts you need accounted for. Exclude duplicate copies (some vendors send both an email confirmation and an attached PDF — keep one), promotional emails saved as PDF, and anything that\'s clearly not an expense (terms-of-service notifications, shipping notices without amounts). The combine tool\'s thumbnail pane lets you spot and exclude problem files before generating the final PDF.

File-naming conventions that pay off. Date-prefix filenames (`2026-05-15_supplier-name.pdf`) work brilliantly with alphabetical sort because they\'ll naturally sort chronologically. If you\'re building this workflow for ongoing use, training every team member to save invoices with date-prefix filenames pays off enormously — month-end consolidation becomes "drag folder, sort alphabetical, run" instead of any manual reordering.

Integration with expense workflows. The consolidated PDF is the right format for several downstream uses: handing to your accountant or bookkeeper at month-end or quarter-end; submitting to an expense-reimbursement portal that accepts one document per claim; archiving in your accounting system as a backup of the source documents for the period; annual tax-prep packaging where 12 monthly consolidated bundles are easier to review than 1,200 individual receipts.

For very large monthly batches (300+ invoices), consider intermediate consolidation. Run a weekly combine first (a smaller bundle of 50–80 files per week), then combine the four weekly bundles into one monthly bundle. The weekly bundles serve as checkpoints — if you discover a missing receipt later, you only need to find the right weekly bundle and re-combine for that week, not start over with 300 files.

Mixed file types. The tool accepts PDFs only, but real-world invoice batches often include PNG and JPG receipts from phone photos. Convert images first using our JPG-to-PDF or PNG-to-PDF tool (one or many at a time), then include the converted PDFs in the combine. Two-step but clean. The Pro batch workflow can chain these automatically.

How it works