Merge PDF Files Online
Add two or more PDF files, drag them into the order you want and click Merge PDFs. PDFYork copies every page into a single new PDF inside your browser, so the files are not uploaded and the pages keep their original text, images and resolution.
Before you start
- Where your file is processed
- In your browser. The file is read and processed on your device and is not uploaded to PDFYork.
- Account
- Not required. Without an account you can run 3 tasks per day across all tools. A free account raises the limit.
- Cost
- Premium tool. Free accounts get 3 premium tasks per day. After that, each task uses 100 credits, deducted when you download the result.
How to Use
Add your PDFs
Drop the files onto the upload area or click to browse. You can add more files later with the add button.
Set the order
Drag the file cards until they are in the order you want. The merged PDF follows this order from top to bottom.
Choose bookmarks
Tick "Preserve bookmarks" if you want one bookmark per source file, named after the file, so readers can jump between sections.
Merge and download
Click Merge PDFs, check the page count in the result, then download the combined file.
What happens to your pages when you merge
The merge tool copies whole pages from each file into a new PDF. It does not re-render, rasterize or recompress them, so text stays selectable and images keep their original resolution. The result is usually close to the combined size of the source files.
The order of the file cards decides the page order. If you need to change the order of individual pages rather than whole files, merge first and then use Organize PDF to drag pages into place.
About the bookmark option
With "Preserve bookmarks" turned on, PDFYork adds one bookmark for each source file, using the file name as the label. This is useful for a combined report or an application pack where readers need to find each part quickly. Bookmarks that already existed inside the source files are not copied, so rename your files clearly before merging if the labels matter.
Limits worth knowing
- Password-protected files cannot be merged until the password is removed. Use Decrypt PDF with the correct password first.
- Interactive forms may lose field behaviour when pages from different files are combined, because field names can clash. Fill the forms first, or flatten them with Flatten PDF, if the visible answers are what matters.
- Very large batches are limited by your device's memory, because everything happens in the browser tab. Merging hundreds of scanned pages works better in a few smaller groups.
Merging scans or photos
If some of your pages are JPG or PNG images rather than PDFs, convert them first with JPG to PDF or Image to PDF, then merge the results. A merged file that contains many scans can be large; Compress PDF can remove some structural overhead, but it does not downsample images, so very image-heavy files may not shrink much.
Use Cases
Job or visa applications
Combine a cover letter, CV, certificates and ID scans into one PDF when a portal accepts only a single upload.
Monthly expense claims
Join receipts and invoices saved as separate PDFs into one file, with a bookmark per receipt for the finance team.
Coursework submissions
Put a title page, the main essay and appendices exported from different apps into one document in the required order.