The issue you're experiencing with heavily compressed and blurry hero images on your live Webflow site can be attributed to various factors. Here are a few potential reasons and solutions:
1. Image Optimization: Webflow employs an image optimization technique called "content-aware image resizing" to reduce file sizes and improve page loading times. It automatically compresses images while serving them on your live site. Although this feature helps optimize the performance, it may result in slightly reduced image quality. To address this, you can manually optimize and compress your images before uploading them to Webflow.
2. Display Size Discrepancy: The Webflow Designer allows you to view and adjust the design on various devices, such as desktop, tablet, and mobile. It's possible that the hero image looks great on the Designer because you're viewing it on a larger display, but when viewed on smaller devices with different resolutions, the image may appear compressed and blurry. To rectify this, make sure to check how your hero image looks across different device breakpoints in the Designer and make adjustments accordingly.
3. Incorrect Image Size and Format: When you upload images to Webflow, it's essential to ensure that they have appropriate dimensions and resolution. If you use a small or low-resolution image and stretch it to fit a larger container on your live site, it can result in distortion and loss of image quality. Similarly, using the wrong image format, such as a low-quality JPEG or an unsupported format, can lead to compression artifacts and blurriness. To avoid this, use high-resolution images with dimensions that match the intended display size, and consider using image formats like PNG or WebP, which offer better quality and smaller file sizes.
4. Internet Connection: Sometimes, the blurriness or compression of images on your live site may not be related to Webflow itself but rather the user's internet connection. If a user has a slower internet connection, their browser may prioritize loading the rest of the page content quickly, resulting in the temporary display of compressed or lower-quality images. This issue usually resolves itself once the image fully loads or the user refreshes the page.
To pinpoint the exact cause and find an appropriate solution for your specific situation, it would be beneficial to provide more details about your workflow, image sizes, and settings. This will allow for a more accurate diagnosis and tailored solution.