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Toolzum

Advanced PDF Tools

Overlay one PDF on another, alternate-merge two documents, combine pages into sheets, apply booklet layout, invert colors, or extract pages as ZIP images. Documents stay on your device — editing and conversion run locally in your browser.

Runs on pdf-libPDF.jsJSZip

100% Local Browser Native

How to Use the Advanced PDF Tools

1. Upload the PDF

Native PDFs with selectable text work best.

2. Apply advanced options

Compression, metadata, and optimization toggles per the panel.

3. Download PDF

Save the optimized file (downloads are unlimited).

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Frequently Asked Questions

Overlay vs merge — what's the difference?

Overlay stacks pages visually (letterhead onto content); merge appends pages end to end.

What is booklet layout?

Reorders pages into printer spreads so folded sheets read in order — for saddle-stitch booklets.

When would I invert colors?

Dark-mode reading and toner saving — white pages become black with light text.

Is my processed PDF uploaded anywhere when using Advanced PDF Tools?

No — all operations run locally in your browser; unlimited saves on local tools.

Last updated October 2026