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Preview of Periodex

Periodex by Jeurissen Apps

Elegant periodic table of elements

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About this extension
Periodex is a simple, responsive way to explore the periodic table of elements. We hope it provides a quick and enjoyable reference for students and enthusiasts.

Periodex has just begun. We plan to add more features and information. If there's a way that we can make it more valuable to you, please let us know!

To use Periodex, simply hover over an element to reveal addition information on the info panel on the right side. You can click on an element to lock the focus. Click again to unlock. You can toggle the info panel by clicking the info button on the top bar.

Periodex is designed to be flexible. Grab a corner and adjust the size to fit your needs.
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Permissions and data

Optional permissions:

  • Access your data for sites in the periodex.co domain
  • Access your data for periodex.co

Data collection:

  • The developer says this extension doesn't require data collection.
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Version
7.8.6
Size
290.76 KB
Last updated
4 days ago (Jun 8, 2026)
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  • Other
License
All Rights Reserved
Version History
  • See all versions
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