Combining multiple PDF files into one is a task that comes up constantly: merging invoices for an expense report, combining chapters of a document, or putting together a portfolio. Here is how to do it quickly without installing software or paying for a subscription.
When You Need to Merge PDFs
The most common reasons people merge PDF files:
- Combining multiple invoices or receipts into a single expense report
- Merging separate chapters or sections of a document before sharing
- Combining a cover letter and CV into one file for a job application
- Putting together a portfolio, proposal, or presentation from multiple files
- Combining bank statements or financial documents for an accountant or lender
- Merging scanned documents that came out as separate files
In each of these cases, sending or submitting one file is simpler and more professional than sending multiple attachments. It also reduces the risk that the recipient misses one of the files.
What Happens When You Merge PDFs
Merging PDFs concatenates the pages from each file into a single document in the order you specify. The content of each page is preserved exactly as it was in the original file, including fonts, images, formatting, and embedded elements.
Bookmarks and internal links from the original files may or may not be preserved depending on the tool you use. For simple documents like invoices and letters, this does not matter. For longer documents with navigation, check whether the merged result preserves the structure you need.
The file size of the merged PDF is roughly the sum of the input files, minus any duplicate resources (like the same embedded font used across multiple files) that a good merger will consolidate.
How to Merge PDFs in Your Browser
You do not need Adobe Acrobat, Microsoft Word, or any desktop software to merge PDF files. Browser-based tools handle the entire process on your device without uploading your files to a server. Here is how to use DevHive's PDF merge tool.
- Go to the PDF Merge tool.
- Click to upload or drag and drop your PDF files onto the upload area. You can add multiple files at once.
- Drag the files in the list to reorder them. The merged document will combine pages in the order shown.
- Click Merge PDFs.
- Download the merged file. The process takes a few seconds for most documents.
Because the processing happens in your browser, your files never leave your device. This is important for documents containing personal information, financial data, or confidential business content.
Controlling the Order of Pages
The order of pages in the merged document depends on two things: the order of the files you provide, and the page order within each file.
If you need to rearrange individual pages rather than whole files, most merge tools do not support this directly. You would need to split the relevant files into individual pages first, then merge them in the desired order. Alternatively, after merging, use a PDF page reorder tool to move individual pages.
If you regularly merge files in a specific order, some desktop tools and command-line utilities allow you to save a merge configuration so you can repeat it without reselecting files each time. For occasional use, a browser-based tool is faster.
Merging PDFs with Passwords
If one or more of your PDF files is password-protected, you will need to remove the password before merging. Most merge tools cannot process encrypted files. Use a PDF password removal tool first, then merge the unlocked files.
Be aware of the reason the file is password-protected before removing the protection. If the owner password was set to prevent editing or copying for legal reasons, removing it and modifying the document may not be appropriate.
Reducing the Size of a Merged PDF
When you merge multiple files, the resulting document can be large, particularly if the original files contained high-resolution images. After merging, run the combined file through a PDF compressor to reduce the file size before sharing or uploading.
This is especially useful for emailing merged documents, as many email services have attachment size limits of 10 to 25MB.
Merge PDF Files Free
Combine multiple PDFs into one file in seconds, directly in your browser. No account, no upload, no software to install.