Regex Editor & Tester

This regular expression matches file paths or URLs targeting files named with a 64-character hexadecimal string, such as a SHA-256 hash, followed by a short alphabetic file extension. It specifically captures the 64-character identifier in four parts: three 2-character hex pairs and a remaining 58-character hex string. This is typically used in an image server context to extract hash fragments for directory routing, caching, or processing, where the detailed match data flag is enabled.