How do I choose between A4 and Letter?

Use A4 for ISO print workflow and Letter for US print workflow.

What is the difference between contain/cover/stretch?

Contain keeps full content, cover fills page with possible crop, stretch fills page with possible distortion.

Yes. Set page range like 1-3,8 to limit processing pages.

No. This tool processes files locally in your browser.

Make mixed-size pages print consistently with local processing

A4/Letter, fit modes, orientation modes, and page range
Preview first, then export with consistent layout

Drag multiple PDFs here or click to select

Merge multiple PDF files instantly

Mixed page sizes -> unified target paper size

Before

Page sizes are inconsistent in one file

After

All pages are unified to A4/Letter

Unify every page to A4 or Letter with stable output size.

Choose contain/cover/stretch and keep/portrait/landscape.

All processing runs in browser with no file upload.

Add one or multiple PDF files to enter the workbench.

Choose paper, fit mode, orientation mode, and page range.

Check preview pages and tune options until layout is expected.

Export PDF for one file or ZIP for multiple files.

How do I choose between A4 and Letter?: Use A4 for ISO print workflow and Letter for US print workflow.
What is the difference between contain/cover/stretch?: Contain keeps full content, cover fills page with possible crop, stretch fills page with possible distortion.
Can I process only a subset of pages?: Yes. Set page range like 1-3,8 to limit processing pages.
Is my file uploaded to server?: No. This tool processes files locally in your browser.

Visual Tutorial