Bento: PowerPoint alternative as single HTML file with collaboration.

What it does

Bento is a presentation tool that outputs a single HTML file. Users create slides with animations, text, images, and charts—all contained in one self-contained file around 560 KB in size. The tool supports shared editing and works entirely offline once the file is generated. No installation, login, or cloud sync required. Slides can include animations like Ken Burns drift effects, looping elements, and count-up numbers. Speaker notes travel inside the file.

Who it is for

The tool targets developers and technical teams who already use coding harnesses or build presentations with web frontend technologies. It appeals to users who want a lightweight alternative to traditional presentation software and prefer working with a single file they can version control, email, or share without a cloud account. Teams doing collaborative editing on decks will find the shared editing feature useful.

Pricing

The site does not show prices.

How it stands out

Bento's core differentiator is distribution and portability. By packaging everything into one HTML file that requires no server, no plugins, and no network calls after creation, it eliminates friction for sharing and archiving presentations. This approach also removes vendor lock-in—the deck is just HTML, readable by any browser forever. The tool is designed for web-native workflows, appealing to teams comfortable editing code-like structures rather than point-and-click interfaces. Built-in animations and morphing effects between slides with matching IDs suggest production-quality output without requiring manual implementation.

What a founder should check

Anyone building a competitor should investigate: (1) the actual collaboration experience—how seamless is real-time shared editing compared to Google Slides or Figma, and whether the single-file constraint creates practical bottlenecks when multiple people edit simultaneously; (2) the learning curve and feature ceiling—whether the tool's code-first authoring model limits adoption to technical teams, and how it compares to hybrid tools like Slides or Pitch that offer both visual and code editing; (3) the moat around the HTML output format itself—whether there are lock-in mechanisms, export options, or whether switching to a different tool later is truly friction-free as the design suggests.

Thinking of building something like this?

Every launch here is a competitor to somebody's idea. If yours is close, check it against the market before you build: the Full Check names the rivals, the prices and the gaps.