For designers specifically, two practical concerns tend to dominate: how much control you have over themes, and how flexibly you can download the finished work. This is where the tools diverge most sharply, and where Adobe Express pulls clearly ahead.
Adobe Express treats theme and template control as central rather than incidental. You can start from the AI-generated theme and then adjust it extensively, changing color palettes, typography, backgrounds, and layout structure across the whole deck or on individual slides. A large template library gives you starting points for different presentation styles, and brand kit features let you lock in your own fonts, colors, and logos so that everything you generate stays consistent with your identity. That last point is significant for anyone producing presentations regularly. Instead of re-applying brand choices every time, you set them once and let the tool enforce them. The workflow also connects to a deep library of stock photos, icons, and design assets, plus editing tools for images and even short video, so building a slide rarely requires leaving Express to source materials elsewhere.
On the download side, Express is genuinely versatile. You can export a finished presentation as a PDF for sharing or printing, as image files (PNG or JPG) when you need individual slides as graphics, as an MP4 video when the deck includes motion or you want a self-playing version, and in standard presentation file formats for use in other software. For a designer who needs the same content in several forms (a PDF to email, images for a webpage, a video for social), that range removes a lot of tedious conversion work.
SlidesAI's workflow is defined by its home inside Google Slides. Your generated deck lives there, which means your theming and template options are essentially Google Slides' own, supplemented by the layouts SlidesAI applies during generation. Those options are functional but modest compared with a dedicated design studio. On export, SlidesAI benefits from the Google Slides pipeline, so you can download to PowerPoint format and to PDF, which covers the most common sharing needs. What you do not get is the wider export spread (video, individual image files, multiple graphic formats) or the deep native theming that Express offers. If your world is Google Slides and PowerPoint, SlidesAI fits neatly. If you need format flexibility and real theme control, it starts to feel constrained.