Files are safely uploaded over an encrypted connection. Files stay secure. After processing, they are permanently deleted.

Rather not upload your files and work with them offline? Try Sejda Desktop. Same features as the online service, and the files never leave your computer.

Click 'Upload' and select files from your local computer.

Dragging and dropping files to the page also works.

You can pick PDF files from Dropbox or Google Drive too.

Expand the 'Upload' dropdown and select your files.

Type a value for the page size, in inch. Use the up/down arrows to change.

The page preview will update, showing the margin added to the PDF pages.

You can specify only few pages that need the margin. Click on the page thumbnails to select them.