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Combine Architectural Drawings & Engineering PDFs in Seconds

Merge construction plans, drawings, and specs into one polished file - no software, no hassle

Rated 4.8/5 by professionals, students, and travelers worldwide.

Start for free - just upload, arrange, and download your unified document

Clean browser interface of Free PDF Combiner with engineering blueprints being dragged and dropped to merge construction plans

Go From Scattered Files to a Single PDF in 3 Clicks

1. Upload Files

Click the button above to enter the app. Drag and drop all your PDF files into the secure uploader.

2. Arrange Order

Drag your files into the perfect sequence. Put the most important document at the top.

3. Download Merged PDF

Hit the merge button. Your new, combined PDF will be ready to download instantly.

Why Choose PDF Merger?

Absolute Privacy

Your blueprints, calculations, and RFIs stay confidential. Every file is transferred with bank-grade encryption and erased from our servers within 60 minutes - no one, not even our dev team, can view your proprietary designs.

Unmatched Simplicity

Zero clutter - just a canvas to drop your PDFs, reorder sheets, and hit “Combine.” No pop-ups, no learning curve, so you can finalize a submittal before the next site meeting.

Universal Access

On site with a tablet or in the studio on a BIM workstation, Free PDF Combiner runs in any modern browser - nothing to install, ever.

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