Optimize image file names and alt attributes to rank higher on search engines.
When a search engine crawler like Googlebot visits your website, it cannot "see" the beautiful photo you uploaded. It can only read the underlying HTML markup.
To understand what an image depicts, crawlers rely heavily on two specific text-based signals: the Alt Text and the Filename.
Most developers know to add an alt="description" tag for accessibility. However, many lazily upload images directly from their phone with terrible, auto-generated filenames like IMG_9438_FINAL.jpg.
Search engines use the actual filename as a strong contextual ranking signal. An image named red-sports-car-front-bumper.jpg will organically rank significantly higher in Google Image Search than DSC0099.jpg, even if both images have the exact same Alt Text.
Filenames on the web must be URL-safe. Using spaces or special characters in filenames results in them being URL-encoded (e.g., a space becomes %20), which makes them harder for search engines to parse cleanly.
This tool enforces SEO best practices by automatically converting your descriptive text into a URL-friendly "slug": converting everything to lowercase, replacing spaces with hyphens, and stripping out special characters.
Why is uploading an image named 'DSC_0045.jpg' bad for SEO?
