Instructor Development Teaching Hacks introduces several online teaching hacks to reduce instructor workload and improve engagement. The hacks include: saving PowerPoints as PDFs for easier student access; exporting PowerPoints to video with narration to make them less monotonous; shortening or segmenting online videos for a more focused experience; using interactive videos to increase engagement and assessment; optimizing images for different devices; leveraging free resources to add content; providing step-by-step guides for technical tasks; using online group projects for collaboration; reusing and duplicating existing content and media to develop new activities faster; and collaborating by sharing content between instructors.