PDF Merge
Merge multiple PDF files into one.
About This Tool
The PDF Merge tool lets you arrange multiple PDF files in your desired order and merge them into a single PDF. You can check each file's page count and size while adjusting the order, making it useful for consolidating documents split across multiple files — such as reports, contracts, scanned documents, and submission materials.
How to Use
Add PDF files
Click the Add PDF button to select the files you want to merge. You can add multiple PDFs at once.
Adjust file order
Use the up/down buttons on the right of each file or drag to change the merge order. You can delete files you don't need.
Merge and download PDF
Click the Merge PDF button to combine the files in the selected order. Once merging is complete, use the Download PDF button to save the result.
Key Features
Merge multiple PDFs at once
Add several PDF files and combine them into a single document.
Freely change merge order
Drag or use the up/down move buttons to arrange files in any order you want.
View per-file details
Check each PDF's filename, page count, and file size while managing the files to merge.
Result summary
After merging, view the output filename, total page count, and file size.
In-browser processing
Your selected PDFs are processed entirely in the browser and are never sent to a server.
Use Cases
Consolidate multiple reports
Combine reports split by department or chapter into a single final document in the right order.
Merge scanned documents
Use this to combine contracts, receipts, and supporting materials that were scanned in multiple batches into one PDF.
Assemble submission packages
Merge separately saved files — such as a résumé, cover letter, portfolio, and certificates — into one file in submission order.
Organize lecture and study materials
Merge weekly lecture slides or multiple reference documents in sequence to create a single study resource.
Archive electronic documents
Bundle related PDFs together for easier management by project, client, or date.
Frequently Asked Questions
In what order are PDFs merged?
They are merged top to bottom as shown in the file list. You can change the order by dragging or using the up/down move buttons before merging.
Can I reorder files after adding them?
Yes. You can freely adjust the order of each file right up until you merge.
Can I remove a specific PDF from the list?
Yes. Click the delete button on the right of each file to remove just that file. To clear all files, use the Remove All button at the top.
Are the original PDF page contents modified?
No. The page contents of each PDF remain unchanged; they are simply joined into a single document in the order you chose.
What is the filename of the merged PDF?
On screen, the output file is generated as toolnamu-merged.pdf. During the actual download, you may be able to rename it depending on your browser or operating system settings.
Can I see page counts and file sizes?
Yes. In addition to each PDF's page count and file size, the total page count and total size of all selected files are also displayed.
Can I merge password-protected PDFs?
No, password-protected PDFs cannot be merged. Please remove the password first.
Are my selected PDFs sent to a server?
No. All processing happens inside your browser, and your selected PDFs are never sent to a server.
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