ETE Viewer Online

Online tool to visualize phylogenetic trees with ETE, enabling researchers, educators, and students to explore structure and relationships from standard formats.

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100%

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4.9 / 5.0

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About This Tool

ETE Viewer Online renders phylogenetic trees from standard formats into scalable visuals. It parses input data, builds an in-memory tree model, applies a chosen layout, and draws a clear, publication-quality representation.
Conceptually, the tool separates data parsing, layout computation, and rendering, enabling reproducible visuals for reports and lectures.
It accommodates common formats (Newick, phyloJSON) and supports annotations such as bootstrap values, branch lengths, and labels.
The unique value lies in its combination of layout options, export formats, and automation-ready outputs suitable for pipelines.
Use cases include validating tree topology, preparing figures for papers, and teaching ecology or evolution concepts. Core features include multi-format input, multiple layouts (rectangular, radial), label and color customization, and export to SVG/PNG. It is designed for researchers, instructors, and bioinformaticians who require rapid, repeatable tree visualizations.

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How to Use

Provide inputs: tree data in Newick or JSON format.
Choose data format and layout: rectangular or radial, with optional labels.
Run render: generate a vector image and optional bitmap export.
Review outputs: inspect structure, adjust colors or annotations if needed.
Export or share: download SVG/PNG or embed in reports.

Frequently Asked Questions

Find Quick Answers

What formats are supported?

Supported formats include Newick and phyloJSON for tree data, with optional annotation support for bootstrap values and branch lengths. The parser handles common syntax variations and reports parsing errors internally.

Can I import trees from external databases?

Yes. Import supports textual formats (Newick, phyloJSON) and can ingest URL-based data or pasted content. When external data is unavailable, the tool falls back to a local parse-only rendering mode.

Is it suitable for large trees?

Large trees render progressively with scalable vector output. Rendering speed depends on tree size and layout; for very large trees, radial layouts and pruning options help maintain performance.

How are results exported?

Rendered trees can be exported as SVG or PNG. SVG exports preserve editability for publication workflows; PNG exports provide fixed raster images for reports or slides.

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