Combine multiple PDF files into a single document with drag-and-drop page reordering. Merges PDFs while preserving bookmarks, annotations, and formatting. All processing happens locally in your browser — no uploads, no server, complete privacy.
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Combine multiple PDF files into a single document with drag-and-drop page reordering. Merges PDFs while preserving bookmarks, annotations, and formatting. All processing happens locally in your browser — no uploads, no server, complete privacy.
Reviewed: 2026-09-18
Merge multiple PDF files into one document entirely in your browser. Drag to reorder, then combine. No uploads, no servers.
Step 1
Drag and drop or click to upload multiple PDF files. The tool accepts standard PDF documents of any size.
Step 2
Drag files to reorder them. The merged PDF will follow this sequence. Remove any files you don't want to include.
Step 3
Click Merge to combine all files. The browser processes the PDF structures locally using client-side libraries.
Step 4
Save the merged PDF to your device. The output contains all pages from your input files in the specified order.
Consequence: PDFs with different password protections may fail to merge or produce unreadable output.
Fix: Remove password protection from all PDFs before merging, then re-protect the merged result.
Consequence: Combining multiple 100+ page PDFs can exhaust browser memory.
Fix: Merge in smaller batches, or compress individual PDFs first.
Consequence: Form fields, annotations, and bookmarks may not transfer correctly during merge.
Fix: Review the merged PDF for interactive elements. Some may need manual re-creation.
Consequence: PDFs with different page dimensions may display inconsistently in the merged output.
Fix: Review each PDF page size before merging. The tool preserves original dimensions.
Consequence: PDFs appear in the merged document in the order they were added.
Fix: Arrange files in the correct sequence before clicking merge.
Combine contracts, annexes, and scanned pages into one ordered PDF for a single deliverable instead of sending several attachments.
Merge multiple scanned segments into one continuous document, then split by chapter ranges if individual files are needed later.
Example usage.
The tool reads multiple PDF files in your browser, combines their pages in the order you specify, and produces a single merged PDF. All processing uses client-side PDF libraries — no server involved.
There is no hard limit, but merging many large PDFs may slow down your browser due to memory constraints. For best results, merge 10 or fewer files at a time.
Yes. Drag and drop to reorder files before merging. The final PDF follows the order you set in the tool.
No. All PDF merging happens locally in your browser. Your PDF files never leave your device.
No. Page merging is a structural operation — pages are combined without re-encoding content. Text, images, and formatting remain identical to the originals.
Bookmarks from individual PDFs are preserved in the merged output.
Yes, the tool handles different page sizes.
PDF Merge reads the uploaded files directly in this browser tab and writes the combined document locally. Page content, annotations, and metadata never leave the device; files are used only on explicit user action, and the page continues to work offline after the initial load.
