Regex Editor & Tester

Matches image MIME type strings at the start of each line, capturing the 'image' prefix, a forward slash separator, and the subtype consisting of letters, digits, or underscores (e.g., image/png, image/jpeg, image/gif). The multiline flag makes ^ anchor to every line start, while the global flag finds all occurrences. Commonly used for validating Content-Type headers, filtering image uploads, or parsing MIME type lists, though it won't match subtypes containing special characters like svg+xml.