Sign in to Acrobat Web at https://documentcloud.adobe.com with your Adobe ID and password, or with your social (Facebook or Google) account.
You can quickly rotate, move, delete, or renumber pages in a PDF online using the Organize Pages tool.
In the top navigation bar, click Edit > Organize Pages.
Do one of the following to select the files that you want to organize and then click Continue:
To select more files, click Insert and then select the desired files from the Recent or Files list, or from your computer, and then click Continue.
You can perform any of the following actions on the pages:
Enter a name for the organized PDF file, and then click Organize.
The PDF file is organized, and then it's ready for download. Click the Download icon to save the file on your computer or device.
A copy of the organized PDF file is also stored in your Adobe Document Cloud account. The Recent section at the bottom area of the home page lists all the files you’ve organized recently. Alternatively, to see the list of all your files, click Documents in the top-menu bar.