June 27, 2026 · 4 min read
Merging PDFs combines multiple documents into one organized file. Whether you're combining invoices, merging scanned pages, or compiling a report, PDFTools Merge makes it simple.
Merge monthly invoices into one document for accounting and record keeping.
Join individual section PDFs into a complete report with proper ordering.
Merge agreement pages, schedules, and exhibits into one contract document.
Combine individual chapters into a complete eBook or manual.
Pro tip: Use Organize Pages after merging to reorder, rotate, or delete specific pages.
Free usage supports PDF files up to 10MB each. For larger scans and archives, Premium raises the per-file limit to 100MB. There is no fixed cap on how many files you can combine in one merge — very large batches simply take longer in the browser.
The merge runs entirely in your browser with pdf-lib — your documents never leave your device, which makes it safe for confidential material like contracts, medical records, and financial statements.