About merging PDF files
Merging PDFs combines several separate documents into one ordered file — perfect for bundling invoices, joining scanned pages, or assembling a report from multiple sources. This tool uses the pdf-lib engine to stitch your files together directly in the browser, so even confidential contracts never get uploaded.
Need the opposite? Use Split PDF to break a document apart, or Compress PDF to shrink the merged result.
Tips
- Files merge in the order you add them, so arrange them before converting.
- There is no page limit beyond your device's memory.
- The original files are never modified — you always get a new combined PDF.