Introduction

modernGraphTool is a web-based tool for visualizing and comparing frequency response (FR) measurements of headphones and IEMs. Load measurements, overlay multiple curves, apply targets and EQ, and share results — all from the browser.

It ships as a fully static site: upload one folder to any web server, or use the CDN mode and receive updates automatically. Everything is built in and configured through a single config.js file, and it reads the same data format as CrinGraph.

For the project’s background, see Why modernGraphTool?

Where to start

Guide for UsersBrowsing a measurement database? Learn to read the graph, compare devices, and EQ.

Guide for OperatorsRunning a measurement database? Deploy it, add your data, and customize the page.

FeaturesWhat each built-in feature does, from the equalizer to cross-site search.

Guide for DevelopersContributing to modernGraphTool: architecture, testing, and build internals.

Already running v1 or a CrinGraph site? See What’s New in v2 and the migration guides linked from it.

Using these docs with an AI assistant

Every page is also served as plain Markdown — add .md to any URL (this page is at /intro.md).

For a whole-site context, point your assistant at /llms.txt. It indexes smaller, purpose-built bundles alongside the complete text, so you can hand over just the operator guide, the end-user guide, or the contributor guide instead of the entire site.