JoinPDF
Merge PDFs in seconds
Combine multiple PDF files into one. Simple, fast, and secure.
4 files for $4.99. No subscription. Credits never expire.
Drag & drop your file here, or click to select
Maximum file size: 100MB
Supported formats: pdf
Your privacy matters: Uploaded files are deleted immediately after processing. Results are deleted after download or within 1 hour. Only you can access your files. Learn More
Your Privacy Matters
- • Files auto-deleted after download
- • Never used for AI training
- • Only you can access your files
How It Works
Combine multiple PDFs into one document in seconds
4 separate files
1 page each
1 combined file
4 pages total
Try the Real Files
Three sample PDFs on the left, merged into a single document on the right. Every file is downloadable.
What is JoinPDF?
JoinPDF combines several PDF files into one document. Add up to 10 PDFs, put them in the order you want, and download a single merged PDF. Credit packs start at $4.99. No subscription, and credits never expire.
How does PDF merging work?
The pages of each PDF are copied, in the order you set, into one new PDF file.
- 1
Upload your PDFs
Drag in up to 10 PDF files.
- 2
Arrange the order
Move files up or down with the arrows.
- 3
Merge
The pages are combined into one document.
- 4
Download
Save your combined PDF.
Why use JoinPDF?
- Set the file order before merging
- No subscription: pay per merge with a credit pack
- Uploaded and processed files are deleted automatically within an hour
- Works in your browser, nothing to install
Best for
Combining contracts, scanned pages, reports and forms into one file to send or archive.
Often used next
- SqueezePic: Shrink photos before you add them to documents.
Simple Pricing
Buy credits once, use them anytime. No subscriptions.
Micro
$4.99Office
$19.99Business
$69.99Enterprise
$249.99If a file fails to process, its credit goes back to your balance automatically. Your files are deleted after download or within 1 hour.
Developer API
Integrate JoinPDF into your apps, workflows, and automation
API Access
Use JoinPDF in your apps. Same credits as web - 1 credit per operation.
# File upload
# The @ symbol tells curl to read from a file path
curl -X POST https://joinpdf.app/api/v1/process \
-H "Authorization: Bearer YOUR_API_KEY" \
-F "file=@image.jpg"
# URL input
curl -X POST https://joinpdf.app/api/v1/process \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://example.com/image.jpg"}'Response:
{
"success": true,
"downloadUrl": "https://joinpdf.app/api/outputs/abc123.png?token=...",
"expiresIn": 3600,
"creditsUsed": 1,
"creditsRemaining": 19
}Additional Endpoints:
GET /api/v1/creditsCheck your credit balance
GET /api/v1/job/:idCheck job status (for async processing)
Sign in to generate your API key and start integrating.
Frequently Asked Questions
How many PDFs can I merge at once?
JoinPDF merges up to 10 PDF files into one document per merge, and one merge uses one credit. Need more than 10? Merge the first batch, then merge that result with the next files. Every page keeps its original size and orientation in the combined file.
Can I change the order before merging?
Yes. After you add the files, move each PDF up or down in the list with the arrows. The merged document follows that order from top to bottom, and the pages inside each PDF stay in the order they already had.
What happens to my PDFs after merging?
JoinPDF deletes the uploaded PDFs as soon as the merge finishes. The combined PDF is kept for download for up to 1 hour, then deleted, and only your signed-in account can download it. Contracts, statements and scanned forms are never shared or reused.
Do credits expire?
Never! Once you purchase a credit pack, you can use those credits anytime - there's no expiration date or time limit.
Can I try before buying?
This tool has no free preview. The smallest pack covers a few files, so a first try costs little, and if a file fails to process, its credit goes back to your balance automatically. Credits never expire, so anything left over is there for your next job.
How does this compare to subscriptions?
Unlike monthly subscriptions that charge you even if you don't use the service, you only pay for what you actually use. Perfect for occasional users who don't need unlimited access.
What if I need more credits?
You can purchase additional credit packs anytime. Your credits accumulate, so buying multiple packs adds to your total balance.
Is my payment secure?
Absolutely! All payments are processed securely through Stripe, one of the world's most trusted payment processors. We never see or store your credit card information.
What happens to my files?
Your privacy is our priority. Uploaded files are deleted immediately after processing. Your results are available for download for up to 1 hour and are deleted after you download them. Only you can access your processed files.