PDF Merge & Split - PDF Flat

PDF Flat is an all-in-one PDF tool that lets you merge, split, and preview PDF files with ease.

◆ Merge PDFs
Combine multiple PDF files into one. Drag and drop to reorder files freely. Watch real-time progress as your files merge quickly.

◆ Split PDFs
Split PDFs the way you want.
• By Range: Specify start and end pages to split
• Extract Pages: Pick and extract only the pages you need
• Every N Pages: Automatically split into equal chunks

◆ Preview & Edit
View and edit your pages at a glance.
• Page grid view / Full-screen viewer
• Drag and drop to reorder pages
• Rotate pages (90° increments)
• Delete unwanted pages
• Save changes instantly

◆ Work History
Review your previous work anytime.

◆ More Features
• Dark mode support
• Korean / English support
• Lightweight app size
• Works offline — files are processed entirely on your device

When you need to merge, split, or reorder PDFs, PDF Flat is all you need.