Assembling job applications, loan packages, or legal filings from multiple separate PDF documents can be tedious. OmniTool Hub enables you to drag and drop multiple files, reorder pages intuitively with live thumbnail previews, and produce a unified, perfectly ordered PDF document in seconds.
Key Property Parameters & Specifications
| Feature | How It Works | Advantage |
|---|---|---|
| Drag & Drop Reordering | Reorder documents or individual pages in visual grid | Ensures correct chronological or legal document order |
| Bookmark Preservation | Consolidates outline trees from child documents | Navigable outline retained across combined sections |
| Form Field Deduping | Renames conflicting AcroForm field names | Prevents overlapping form values across merged forms |
| Cross-Document Merging | Mix documents with different orientations and sizes | Handles landscape spreadsheets and portrait letters seamlessly |
Implementation Guide & Technical Reference
Sequential PDF Merge Pipeline
const mergedDoc = await PDFDocument.create();
for (const fileBuffer of files) {
const doc = await PDFDocument.load(fileBuffer);
const pages = await mergedDoc.copyPages(doc, doc.getPageIndices());
pages.forEach(p => mergedDoc.addPage(p));
}
const finalBytes = await mergedDoc.save();In-memory multi-document merge.
Frequently Asked Questions (FAQ)
Can I combine PDFs with different page sizes (e.g. A4 and US Letter)?
Yes. Each merged page retains its original dimensions and orientation without forced distortion.
Is there a limit to how many PDF files I can merge?
There are no artificial software limits. You can combine dozens of files directly in local RAM.
Are interactive links preserved after merging?
Yes. Standard web hyperlinks and intra-page annotations are carried over into the merged output.
Is my data secure when combining confidential files?
100% secure. Everything runs locally in your browser memory; zero bytes are ever uploaded.