How to Organize, Merge, and Split PDFs securely

The ultimate toolkit to reorder pages, rotate upside-down documents, merge files, and extract specific pages without uploading your data to a server.

Merge and Split in One Workspace

Most PDF tools make you choose between merging two files or splitting one file. GASO Studio combines both. Drop multiple PDFs into the workspace, and they will explode into individual pages. You can drag and drop them to merge and reorder, or select only the specific pages you want to keep and hit export to split them out.

Lossless Vector Mode vs Standard Sizes

If you choose Keep Original Sizes, the engine will use strict vector math to rearrange your PDF without destroying the text quality or searchability. If you choose Force Standard Size, it will act like a printer, taking screenshots of every page and centering them perfectly onto A4 or US Letter paper.