PDF Tools
Merge PDF
Use this free Merge PDF tool to combine PDF files online in your browser, reorder them before processing, and download one merged PDF for reports, contracts, applications, or client handoffs.
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Add PDFs to see the merge list here.
Add two or more PDF files to begin.
Usage notes
- Keep the page order final before merging because the merged PDF follows the list exactly.
- Very large PDFs can hit browser memory limits, so start with normal-sized documents first.
- For best results, keep the combined file size under 100 MB to avoid browser memory limits.
- If you only need certain pages from a document, split it first and then merge the final selection.
How to Use This Tool
- 1Click the file input or drag PDF files into the upload area.
- 2Add as many PDF files as you need — they will appear in a list below.
- 3Reorder the files by moving them up or down until the page order is correct.
- 4Click Merge and Download to combine all files into a single PDF.
- 5Download the merged PDF file to your device. The original files remain unchanged.
Frequently Asked Questions
- Can I merge PDF files online for free?
- Yes. This Merge PDF tool lets you combine PDF files online for free in your browser. Your documents are not uploaded to any server.
- Is there a file size limit?
- There is no hard limit, but very large files (over 100 MB total) may cause your browser to slow down or run out of memory. For best results, keep the combined file size under 100 MB.
- Can I reorder PDF files before merging?
- Yes. You can reorder the PDF files in the list before merging. To reorder individual pages within a single PDF, use our Split PDF tool first to extract specific pages, then merge them in the order you want.
- What PDF features are preserved?
- Text, images, annotations, and most formatting are preserved during merging. Interactive form fields and JavaScript actions may not carry over in all cases.
- Can I merge password-protected PDFs?
- No. Password-protected or encrypted PDFs must be unlocked before merging. We plan to add a PDF unlock tool in a future update.
- Does merging reduce quality?
- No. Merging combines pages without re-encoding content, so text and images remain at their original quality.