impress.js vs Spectacle
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A JavaScript framework for making zoomable, 3D-style presentations in a web browser using CSS transforms.
Open source · MIT
A React library for building slide presentations by writing JSX, including live code demos.
The short answer
Choose impress.js if you need…
- Web developers who want a custom, browser-based slide deck
- Designers who want spatial, animated slide layouts
- People presenting from their own laptop in a modern Firefox or Chrome browser
- Anyone starting from the Classic Slides template for a traditional slide look
Choose Spectacle if you need…
- React developers who want to build slides as code
- Engineers giving technical talks that include live demos
- Teams that keep presentations in version control
Side-by-side
| impress.js | Spectacle | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 38.2k | 10.2k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Clone and build from source | Install with a package manager |
| Main language | JavaScript | TypeScript |
| Last code update | 4 months ago | 10 days ago |
What each one is
impress.js
impress.js is a JavaScript framework for building presentations that run in a web browser. It uses CSS3 3D transforms and transitions to move between slides placed in a large canvas, inspired by the zoomable style of prezi.com. You write the presentation as HTML and CSS, and the library handles the movement between slides.
Spectacle
Spectacle is a JavaScript library built on React that lets you create presentation slides by writing components in JSX, the syntax React uses. Because slides are ordinary React code, you can embed live, running code examples inside a talk. The README describes it as a ReactJS based presentation library and points to a docs site for details.
Best for
impress.js
- Web developers who want a custom, browser-based slide deck
- Designers who want spatial, animated slide layouts
- People presenting from their own laptop in a modern Firefox or Chrome browser
- Anyone starting from the Classic Slides template for a traditional slide look
Spectacle
- React developers who want to build slides as code
- Engineers giving technical talks that include live demos
- Teams that keep presentations in version control
Strengths
impress.js
- Based on standard CSS3 transforms and transitions, with no jQuery or other JavaScript libraries required
- Core is a single JavaScript file that does not depend on Node or npm at runtime, according to the README
- Has a documented API reference, a Getting Started guide, and an official demo with commented source
Spectacle
- Slides are written as JSX, so they fit into an existing React workflow
- Supports live demos of code within a presentation, according to the description
- Published under the MIT license and actively maintained per the README
Not ideal for
impress.js
- People who need a point-and-click editor, since the README describes the separate Impressionist project for visual editing and does not describe a built-in editor
- Anyone who needs reliable display for many visitors on older browsers, since the README says some visitors may not see presentations correctly
- People who want a no-code tool, since the work is done in HTML, CSS and JavaScript
Spectacle
- People who want a drag-and-drop slide editor, since the README describes a code-based library and does not mention a visual editor
- Non-programmers, because creating slides requires writing React components
Trade-offs
impress.js
- Browser support is limited to modern browsers, and the README says it is mainly aimed at presenting from your own laptop
- The README says it may not help if you have nothing interesting to say, and it offers no visual editor in the core project
Spectacle
- Requires knowledge of React and JavaScript to use
- The README is short and defers most detail to the docs site and package README
- Not a visual editor, so layout changes are made in code
Getting started
impress.js
Clone the repository
git clone --recursive https://github.com/impress/impress.js.gitEnter the project folder
cd impress.jsSpectacle
Install the spectacle package from npm
npm install spectacleFrequently asked questions
What is the difference between impress.js and Spectacle?
impress.js: A JavaScript framework for making zoomable, 3D-style presentations in a web browser using CSS transforms. Spectacle: A React library for building slide presentations by writing JSX, including live code demos. impress.js suits web developers who want a custom, browser-based slide deck, while Spectacle suits react developers who want to build slides as code.
Are impress.js and Spectacle free?
impress.js: Free and open source. Spectacle: Free and open source.
Is impress.js or Spectacle more popular?
impress.js has more GitHub stars (38.2k) than Spectacle (10.2k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to impress.js and Spectacle?
Other options people compare them with include reveal.js, remark, Slidev, mdx-deck, Chakra UI.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.