ThinPDF
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Free PDF Merger

Merge multiple PDF files into one document instantly. Drag and drop to reorder files before merging.

merge_type

Drag and drop your PDF files here

Select or drop 2 or more PDF files to merge

Maximum file size per file: 100MB | Maximum total: 500MB

security 100% Secure
swap_vert Easy Reordering
speed Lightning Fast
money_off Completely Free

How to Merge PDF Files Online

  1. Upload PDF files: Click "Choose files" or drag and drop multiple PDF files into the upload area (minimum 2 files required).
  2. Reorder files (optional): Drag and drop files in the list to arrange them in your desired merge order.
  3. Start merge: Click the "Merge PDFs" button to combine your files into one document.
  4. Download result: Once merging is complete, download your merged PDF file.

About PDF Merging

Merging PDF files combines multiple documents into a single PDF. This is useful for consolidating reports, combining invoices, merging chapters of a book, or creating comprehensive documents from multiple sources. Our PDF merger preserves all formatting, images, and document structure, ensuring your merged PDF looks exactly as intended.