The paper presents a novel method for generating and detecting spatiotemporal optical vortices (STOVs) with customizable topological charges (TCs) in a single wave packet. The authors demonstrate that a wave packet can carry 28 STOVs with various TC arrangements, which are generated using a folded 4f pulse shaper and a cylindrical lens. The diffraction rules of STOV strings are theoretically and experimentally revealed, allowing the simultaneous recognition of all STOVs' TC values and positions from a single diffraction pattern. This work opens up new possibilities for optical communication, quantum information processing, and other applications by enabling high-bit coding/decoding using structured light. A proof-of-principle experiment successfully transmitted an image using 16-STOV strings, showcasing the potential of STOV strings as efficient data carriers in optical communication.The paper presents a novel method for generating and detecting spatiotemporal optical vortices (STOVs) with customizable topological charges (TCs) in a single wave packet. The authors demonstrate that a wave packet can carry 28 STOVs with various TC arrangements, which are generated using a folded 4f pulse shaper and a cylindrical lens. The diffraction rules of STOV strings are theoretically and experimentally revealed, allowing the simultaneous recognition of all STOVs' TC values and positions from a single diffraction pattern. This work opens up new possibilities for optical communication, quantum information processing, and other applications by enabling high-bit coding/decoding using structured light. A proof-of-principle experiment successfully transmitted an image using 16-STOV strings, showcasing the potential of STOV strings as efficient data carriers in optical communication.