Combine multiple PDFs into one document. Free and no sign-up.
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Max 50MB • Files deleted within 1 hour
Processed in your browser — this file never leaves your device. Very large or unusual files may be processed on our servers instead and deleted within 1 hour.
Simple steps to merge your PDFs
Select multiple PDF files you want to merge together
Arrange your files in the order you want them merged
Get your merged PDF file instantly, no sign-up needed
Select multiple PDF files you want to merge together
Arrange your files in the order you want them merged
Get your merged PDF file instantly, no sign-up needed
You can merge up to 20 PDF files at once, with a max size of 50MB per file.
Yes! BlendPDF correctly handles RTL languages including Arabic, Hebrew, Persian, and Urdu.
No. All files are automatically deleted after 1 hour. We never store your data.
Upload your PDF files by clicking "Select PDF" or dragging and dropping them. Arrange the files in your desired order by dragging thumbnails. Click "Merge PDFs" and download your merged file. The process takes 5-10 seconds and preserves all formatting, images, and text.
Yes, BlendPDF is safe to use. All uploads are encrypted with SSL/TLS. Files are automatically deleted within one hour, most immediately after processing. No account or personal information is required, and we never read, store, or share the contents of your documents. We use Google Analytics for aggregate, anonymous usage measurement only, never your document contents.
You can upload up to 20 PDF files at once, with each file up to 50MB in size. The total combined size per merge is limited to 100MB.
You can merge up to 20 PDF files in a single operation. This allows you to combine multiple documents efficiently without needing multiple sessions.
Yes, all formatting, images, text, fonts, and interactive elements like forms and links are preserved in the merged PDF. The original quality is maintained.
Yes, you can drag and drop the PDF thumbnails to rearrange them in any order you want before merging. This visual interface makes it easy to organize your documents.
Password-protected PDFs cannot be merged directly. You would need to unlock them first using a PDF unlock tool, then merge the unlocked files.
Merging typically takes 5-10 seconds, depending on the total file size. Larger files may take slightly longer, but the process is generally very fast.
Your files are automatically deleted from our servers within one hour, most immediately after processing. We never read, store, or share the contents of your documents.
Yes, BlendPDF works on all mobile devices including smartphones and tablets. The interface is fully responsive and touch-friendly.
Yes, BlendPDF supports PDFs in all languages including Arabic, Hebrew, Persian, Chinese, Japanese, and many others. RTL languages are fully supported.
Yes, merging PDFs with BlendPDF is completely free — no fees, no watermarks, and no premium tiers today. All tools are available at no cost.
No, you do not need to create an account or provide any personal information. You can use BlendPDF immediately without any registration.
If you encounter an error, try uploading smaller files, checking that files are valid PDFs, and ensuring you have a stable internet connection. If problems persist, the files may be corrupted or encrypted.