Powerpoint

This one handles PowerPoint creation through HTML templates rather than clunky object models, which means you get pixel-precise layouts without wrestling with coordinate systems. It rasterizes gradients and icons to PNGs first, then converts HTML to PPTX using html2pptx.js. You can also audit existing decks by generating thumbnail grids to spot layout issues, or use the template tools to duplicate slides and inject content via JSON. The design constraints are strict (web-safe fonts only, no # in hex codes or it corrupts files) but that's the trade-off for actually controlling where things land on the slide. Best for pitch decks and board presentations where layout matters more than animation tricks.