How to Merge PDF Files Online
Combining multiple PDF documents into a single file is essential for organizing reports, creating portfolios,
or consolidating paperwork. FastConvert's free PDF merger makes this process simple - no software
installation needed. Whether you're combining contracts, receipts, or school assignments, our tool preserves
the quality and formatting of your original documents.
Step-by-Step Guide
1
Select Multiple PDF Files
Click the upload area or drag and drop multiple PDF files at once. You can add up to 20 PDF files
with a combined size of 50MB. Files will appear in a list below the upload area.
2
Arrange the Order
Drag and drop files in the list to arrange them in your desired order. The final merged PDF will
follow this sequence from top to bottom. Remove any unwanted files by clicking the X button.
3
Merge and Download
Click the "Merge PDFs" button to combine all files into one document. Once processing is
complete, download your merged PDF file. The original quality is fully preserved.
Common Use Cases for Merging PDFs
📚
Combine Reports
Merge monthly reports, quarterly summaries, or annual reviews into single comprehensive documents.
📁
Create Portfolios
Combine work samples, certificates, and resumes into a professional portfolio for job applications.
🧾
Organize Receipts
Combine expense receipts for expense reports, tax purposes, or reimbursement requests.
📋
Consolidate Contracts
Merge contract pages, addendums, and signatures into complete legal documents.
💡
Pro Tip: Before merging, name your PDF files with numbers (01_, 02_, 03_) to keep them
organized. This makes it easier to verify the correct order before combining.
Features of Our PDF Merger
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Merge up to 20 PDFs at once
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✓
Drag-and-drop file ordering
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✓
Preserves original quality
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No file size limits per document
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100% free, no registration
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Secure - files deleted in 10 min
Frequently Asked Questions
How do I merge PDF files online for free?
Upload your PDF files to this page, arrange them in the desired order by
dragging and dropping, then click "Merge PDFs." Download your combined document instantly. No
registration or payment needed.
How many PDF files can I merge at once?
You can combine up to 20 PDF files in a single merge operation. The total
combined file size should not exceed 50MB. For larger projects, you can merge in batches and then
combine the results.
Will merging affect the quality of my PDFs?
No, our PDF merger preserves the exact quality of your original documents. Text,
images, fonts, and formatting remain unchanged. The merged file is simply a combination of the
original pages.
Can I change the order of pages after uploading?
Yes! After uploading your PDF files, you can drag and drop them to rearrange the
order. The files at the top of the list will appear first in the merged document.
Is it safe to merge sensitive documents?
Yes, security is our priority. All files are processed with SSL encryption and
automatically deleted from our servers within 10 minutes. We never access, read, or share your
documents.
Can I merge password-protected PDFs?
Password-protected PDFs must first be unlocked before merging. You can use our
Unlock PDF tool to remove the password, then merge the unprotected files. This requires knowing the
original password.
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