Visualize and analyze your bundle to quickly see which modules are taking up space.
Most developer tooling work still happens through a UI a human drives. Rollup MCP server moves it into the conversation instead. Visualize and analyze your bundle to quickly see which modules are taking up space.
Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.
The server publishes 6 tools. What each one is for:
Sunburst — The circular view is useful for spotting large chunks of code. Clicking an arc zooms into that section and enlarges nested arcs for inspectionFlamegraph — This is a top-down version of the sunburst view and should feel familiar if you use other JavaScript performance toolingTreemap — This rectangular hierarchical view makes large modules easy to find quickly. It can also reveal repeated modules, because repeated content tends toNetwork — Use this view to answer, "Why is this included?" After the force layout stabilizes, you can drag nodes around. Gray circles are tree-shaken filesList — Produces a YAML file with report data. This is useful to commit and track bundle changes over timeMarkdown — Produces a Markdown report with summary tables and notes about config and size precisionThis package requires Node.js >= 22.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Rollup's toolset — Sunburst, Flamegraph, Treemap and 3 more — is a fair guide to whether it matches your workflow. It is maintained by GitHub Actions; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Rollup's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Sunburst | The circular view is useful for spotting large chunks of code. Clicking an arc zooms into that section and enlarges nested arcs for inspection. |
| Flamegraph | This is a top-down version of the sunburst view and should feel familiar if you use other JavaScript performance tooling. |
| Treemap | This rectangular hierarchical view makes large modules easy to find quickly. It can also reveal repeated modules, because repeated content tends to show similar structure and relative size. |
| Network | Use this view to answer, "Why is this included?" After the force layout stabilizes, you can drag nodes around. Gray circles are tree-shaken files. |
| List | Produces a YAML file with report data. This is useful to commit and track bundle changes over time. |
| Markdown | Produces a Markdown report with summary tables and notes about config and size precision. |
This package requires Node.js >= 22.
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