How to merge PDF files online
Combine invoices, scans, or contracts into one PDF without a desktop app.
Prepare your files
Gather the PDFs in the order you want. Corrupted or password-protected files may fail—unlock files you are authorized to edit first. Large scans may take longer on slower devices because merging runs locally.
Merge with Odin
Open Merge PDF, add every file, reorder if the UI allows, then download the combined document.
After you merge
Open the result in a PDF reader and spot-check page order. If you only need a range of pages next time, use Split PDF instead of remaking the whole packet.