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HomePDFPDF Merger

About PDF Merger

PDF Merger preview - PDF tool

Merge multiple PDFs into a single document. Part of the DevTools Surf developer suite. Browse more tools in the PDF collection.

Use Cases

  • Combine invoice pages into a single document for filing
  • Merge contract sections from different authors
  • Assemble multi-chapter ebooks from individual PDF chapters
  • Create submission packets by combining forms and attachments

Tips

  • Drag and drop multiple PDFs to combine them in order
  • Reorder files before merging to set the page sequence
  • Merge scanned documents with cover pages into a single PDF

Fun Facts

  • PDF supports incremental updates, meaning merged PDFs preserve each original file's internal cross-reference table as a new revision layer.
  • The PDF specification defines over 1,000 pages of format details in ISO 32000-2:2020, making it one of the most complex document standards.
  • Adobe Acrobat, the first commercial PDF editor, was released on June 15, 1993, at a price of $695 for the full version.

FAQ

How many PDFs can I merge?
Dozens comfortably; the limit is your browser's memory. For 100+ PDFs, use command-line tools (pdftk, qpdf).
Is the page order preserved?
Yes — in the order you arrange them. Drag to reorder before merging.
Are bookmarks preserved?
Yes — bookmarks and outlines from source PDFs are merged into the combined document's outline.
Can I insert blank pages between?
Toggle 'add blank between files' to separate sections visually. Useful when merging contracts or report sections.

Related PDF Tools

Sample PDFsPDF SplitterPDF CompressorMarkdown → PDFInvoice GeneratorTXT → PDFHTML → PDFDOCX → PDF
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