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  • Tree format options
  • Tree size options
  • Scale bar options
  • Label options

  • Dot options

    Inner dots

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  • Bar options
  • Arc options
  • Branch options
  • Viewer options

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Iroki tree viewer

Hi! I'm the Iroki tree viewer!


Iroki is a super snazzy online tree viewer (phylogenetic or other kinds too!) with automatic customization using metadata or biom files.

You can visualize your newick trees as well as project count data into colors that you can use to style the tree!

If you need to pick colors for your tree, we suggest using one of the lovely palettes included in Iroki!!


If you find Iroki useful in your research, please cite the Iroki preprint. Thank you!!

Moore RM, Harrison AO, McAllister SM, Polson SW, and Wommack KE. Iroki: automatic customization and visualization of phylogenetic trees. bioRxiv 106138 (2019). doi:10.1101/106138


To see usage examples and learn about how to customize your trees, check out the documentation.

Getting help

If you have any problems running Iroki, please send us an email!

Please report any bugs on the contact page.