Why Merge PDFs Locally?
Traditional PDF merging sites require you to upload your documents to their cloud infrastructure. This exposes your sensitive data, contracts, and PII to unknown third-party servers. DevUtility Hub utilizes pdf-lib and Wasm to perform the merge entirely within your browser's sandbox.
Technical Process
1. ArrayBuffer Reading: Your files are read as raw binary buffers in JavaScript.
2. XRef Table Integration: The tool parses the cross-reference tables of each PDF.
3. Page Catalog Mapping: New catalog objects are created to link the merged pages.
4. Serialization: The final binary stream is serialized into a new PDF Blob.