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Toolzum

Bulk PDF Merger

Join up to 100 PDFs into one document per Pro run with order control and preserved links. Legal teams bind 40 exhibits into one filing — local pdf-lib merge, 2 free batches a day.

Runs on pdf-lib

100% Local Browser Native

How to Use the Bulk PDF Merger

1. Add PDF Files

Drag and drop multiple PDF files or click to select them from your device.

2. Reorder if Needed

Drag files up or down to set the merge order. Files are joined in the order shown.

3. Merge and Download

Click merge to combine all files into a single PDF, then download the result.

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Frequently Asked Questions

How many PDFs merge in one batch?

Signed-in free users merge 2 Pro batches a day; Pro merges up to 100 files to 2 GB per run. A 40-exhibit filing binds in under a minute — arrange order first, since re-merging costs another batch download.

Do bookmarks and hyperlinks survive merging?

Yes — outlines, internal links, and metadata carry into the merged document wherever the format allows. Flatten filled forms before merging so field values bake in identically on every reader.

Can I merge only selected pages?

Merge works on whole files: split out the pages you need first, then merge the parts. For a 200-page report needing chapters 2 and 5, split-extract both, then merge the two extracts.

Is the merged filing uploaded anywhere?

No — merging runs locally in your browser on pdf-lib; documents never leave your device. Only the final merged save counts as one Pro download.

Last updated October 2026