The 2023 Workshop on Insertion Devices for Future Light Sources, ID23, was held Sept. 25-27, 2023, at the Advanced Photon Source, Argonne National Lab. A total of over 180 attendees participated in the workshop, which was held in a hybrid format. Of the attendees, 103 were registered to attend remotely using Zoom. There were 32 technical presentations, with 13 given in person and 19 given by remote speakers. The speakers represented over 18 major light source facilities, universities, and industry partners from around the world.

The topics covered in the 32 presentations included:

• (1) Overviews of IDs at a few facilities, including conventional permanent-magnet IDs
• (2) Superconducting undulators (SCUs)
• (3) Measurement and tuning of IDs
• (4) Industry collaboration, simulation analysis, and other

The organization of the talks roughly followed these topics, with Topic (1) divided between Monday and Tuesday mornings, Topic (2) on Monday afternoon, Topic (3) on Tuesday afternoon, and Topic (4) interspersed as time allowed.

The final part of the workshop, on Wednesday morning, was devoted to short summaries of groups of related presentations (given by the session chairs), followed by an open discussion that included both in-person and remote attendees.

The following table is the agenda of this workshop. Proceedings compilation, presentation slides and video zoom recordings are only available for internal access.