Webb Compare presents side-by-side images from the James Webb and Hubble space telescopes, including nebulae and galaxy clusters.
Webb Compare
Webb Compare lets visitors compare images from the James Webb Space Telescope with earlier telescope images.
About Webb Compare
Webb Compare lets visitors compare images from the James Webb Space Telescope with earlier telescope images, including Hubble views. It uses images from NASA with zoom and pan via OpenSeadragon and a slider implementation, and its code is open source under a GPL-3.0 license.
Key features
- Compare James Webb Space Telescope images with older telescope images
- Image comparison using OpenSeadragon slider implementation
- Zoom and pan on images via OpenSeadragon
- Images sourced from NASA
- Open-source code under GPL-3.0 license
Best for: People who want to visually compare James Webb Space Telescope images with earlier telescope images.
Good for
- Open source under GPL-3.0 license
- Uses images from NASA
- Provides zoom and pan via OpenSeadragon
Webb Compare at a glance
- Category
- Education & Learning › Space & Astronomy
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Webb Compare FAQ
Where do the images come from?
From NASA, linked as https://www.nasa.gov/webbfirstimages.
How can I help with the project?
See CONTRIBUTING.md for contribution guidance.
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