• Sign in to your Instagram account at instagram.com.
• In the upper right corner of the screen, click the + sign (it's the same icon you'd use to make a post in the mobile app). A window to create a new post will appear.
• Drag photo or video files into the popup window, or select files from your PC or Mac by clicking Select from computer. You can choose up to ten files to include in a carousel post.
• To adjust the ratio of your image or video, click the frame icon in the lower left corner of the popup. You can also edit your frame by zooming in (using the looking glass symbol in the bottom left) and dragging your file. When you're finished, go to the upper right corner and click Next.
• Make changes to your image. In the Filters page, you can choose from 12 preset effects or click to the Adjustments tab to manually change brightness, contrast, and fading. Next should be selected.
• Make a caption for your photo. To browse and select emojis, click the smiley face icon. You can also add alt text to your files in the Accessibility section, restrict comments in Advanced settings, and type in a location in the Add location bar.
• To share, click the Share button.

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