What is a YAML tree viewer?

A YAML tree viewer renders your YAML as a collapsible tree so you can explore its structure visually. Each key/value and list item becomes a node you can expand or collapse, which is far easier to read than raw YAML for large or deeply nested data.

How do I expand or collapse the tree?

Click any node to toggle it open or closed. Use the "Expand all" and "Collapse all" buttons to open or close the entire tree at once — handy for jumping between a high-level overview and the details.

Can I copy a single value from the tree?

Yes. Hover over any node and click the copy icon to copy that value to your clipboard. For a branch (a mapping or sequence), it copies the whole subtree; for a leaf it copies just that value.

Does it handle large or deeply nested YAML?

Yes. Collapsed branches aren't rendered until you open them, so even large YAML stays responsive. Deeper levels start collapsed so you see the overall shape first, then drill into the mappings, sequences and values you care about.

Is my YAML data private?

Completely. Parsing and rendering happen entirely in your browser — your YAML is never uploaded or sent to a server. There's no sign-up, and it works offline once the page has loaded.

YAML Viewer - Online YAML Tree Viewer & Explorer

YAML Viewer — Explore YAML as an Interactive Tree

Paste any YAML and explore its structure as a collapsible tree. Mappings, sequences and typed values all become nodes you can expand, collapse, search and copy — far easier to scan than raw YAML for large files like Kubernetes manifests, docker-compose.yml or CI pipelines. Parsing follows the YAML 1.2 spec and runs entirely in your browser; your data is never uploaded.

Features

✅ Tree explorer — click to expand/collapse mappings and sequences
✅ Search by key or value — filter and highlight matches instantly
✅ Typed values — strings, numbers, booleans, dates and null at a glance
✅ Expand all / Collapse all — toggle the whole tree in one click
✅ Hover to copy — copy any value or a whole subtree
✅ 100% private — parsed and rendered entirely in your browser, no upload, no signup

Common use cases

Read a Kubernetes manifest or Helm values.yaml and find a key
Navigate a docker-compose.yml with many services and ports
Inspect a GitHub Actions / GitLab CI pipeline by searching the tree
Check nested anchors and lists without counting indentation

Why this YAML viewer

YAML's significant whitespace makes deep nesting hard to read; the tree turns indentation into clickable structure and lets you search keys and values at once. The same explorer also handles JSON, XML and TOML — one free, client-side tool for every config format, with nothing sent to a server.

How to use

Paste or type YAML into the editor on the left.
Explore the tree on the right — click nodes, search, or use Expand all / Collapse all.
Hover any value and click the copy icon to copy it.

Related tools

JSON Viewer — explore JSON as a tree
XML Viewer — explore XML as a tree
TOML Viewer — explore TOML config as a tree
JSON to YAML — convert JSON to YAML
YAML to JSON — convert YAML to JSON
Universal Code Editor — edit & run code in 25+ languages

YAML Viewer OnlineYAML ViewerYAML

Explore YAML as an interactive tree — mappings, sequences, search, expand & copy