If you want to resize images for different social media sites without losing image quality, Pixelhunter is worth a look. It uses the Uploadcare Intelligence API to automatically recognize objects and crop images for the best possible resizing for Facebook, Instagram, Twitter and other services. It offers a variety of image sizes and advice on maintaining a consistent brand look across multiple services, so it's a good option if you want to elevate your social media presence.
Another good option is Let's Enhance, an AI image enhancement and generation tool. It can upscale and enhance low-resolution images to 4K and beyond, and it's got other tricks like HDR filters, background removal and batch processing. That makes it useful for creative pros and businesses that need high-quality imagery for things like social media posts.
For a more general-purpose image resizer, ExtendImageAI brings AI smarts to amplify and expand images. It's got features like Magic Expand for adjusting framing and converting image formats, and an enlarger that works interactively to preserve color and style. That's good for pros who need to increase visuals for various creative projects, like social media graphics.