When you need PNG instead of PDF
Inserting into presentations
PowerPoint and Keynote work better with PNG. Transparent background lets you place graphics on any slide.
Publishing on websites
PNG loads and displays in browser directly. Transparency is useful for logos on colored backgrounds.
Editing graphics
For work in Photoshop, Figma, or other editors, PNG is more convenient than PDF. All layers preserved.
Documenting interfaces
Screenshots from PDF specifications can be inserted into technical documentation or bug reports.
Social networks
Social networks accept PNG but not PDF. Convert infographics for posting on Facebook or Telegram.