Batch PDF Merger

When you need to merge not just a few files but dozens or even hundreds of PDFs at once, the main requirement is a flow that lets you start quickly and stay organized. Batch merging is common in automated report generation, bulk document processing, and large-scale archival.

Coda One's batch PDF merger handles large file sets in your browser. Select all your PDFs at once using multi-file selection, or drag and drop an entire folder's worth of files into the tool. The file list shows every document with its name and size, and you can reorder or remove individual files before merging. When you're ready, one click combines everything into a single PDF.

Performance depends more on your device than on a remote queue because the merge runs in your browser with pdf-lib. For very large batches (500+ files or 200MB+ total), merge in groups of 50-100 for a smoother first pass. The tool preserves page content, formatting, and metadata from the original files, making it a good fit for direct batch document workflows.