Highly customizable lightweight financial chart

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A professional financial charting engine for trading terminals and financial applications.

Create a chart quickly and easily

KLineChart lets you create a financial chart in just a few lines of code. It also includes a variety of commonly used technical indicators to make charts look more professional.

Core strengths

Lightweight, professional, extensible — built for financial frontends

Out of the box

Simple and fast integration with zero cost to get started. Display a chart in just 5 lines of code and focus on data integration.

5 linesto initialize a basic chart

Low frictionfor prototypes and product adoption

A basic chart can be integrated with only a small amount of setup code.
The docs, examples, and API structure make usage easier to understand quickly.

Lightweight and smooth

Zero dependency and only about 50k under gzip. Charts stay smooth even with thousands of data points.

~50klightweight core after gzip

High interactionstable during zooming and scrolling

Dependency-free and lightweight, so it is easier to adopt in existing web projects.
Remains stable and responsive with large datasets and frequent interaction.

Powerful functionality

Built-in candlestick styles, coordinate axes, dozens of indicators, and drawing models to meet most needs.

Rich built-inschart types, indicators, and overlays ready out of the box

Professional gradesupports more complete analysis and market-view needs

Built-in chart styles, indicators, overlays, and axis systems cover common use cases.
Supports most market display, trading visualization, and analysis-assistance scenarios.

Highly extensible

Rich APIs, style configuration, and extensions for indicators, drawing models, and axes — combine features freely.

Extensiblekeeps growing with product requirements

Customizableacross figures, indicators, styles, and interaction

Supports continued extension around indicators, overlays, figures, and axis systems.
Allows styles, interaction models, and feature combinations to follow product-specific needs.

Mobile

Specially adapted for mobile devices and fully capable of running in mobile browsers.

Touch-readygestures tuned for mobile interaction

Browser-readyruns directly in mobile browser environments

Supports common mobile gestures such as zooming and scrolling.
A good fit for H5 market pages and mobile trading terminals.

Typescript

Provides complete TypeScript declaration files for a first-class TypeScript development experience.

Full typescomplete TypeScript declaration files included

DX-friendlybetter editor hints and safer refactors

APIs, configuration options, and extension interfaces are all typed.
Ready for direct adoption and customization in TypeScript projects.

Use Cases

KLineChart works best as a charting foundation inside finance products, rather than as a standalone component.

Trading terminals and market views

For professional trading terminals and market views that bring display, analysis, and interaction together. Configure panes, drawing tools, and axes to match your workflow, and plug into realtime or historical feeds with minimal friction.

Finance apps and embedded modules

For finance apps and embedded chart modules where consistency, interaction polish, and bundle size all matter. Zero dependencies, mobile-friendly gestures, and a styling model that fits existing design systems.

Quant research and strategy simulation

For research platforms, backtest panels, and strategy drills that need deeper customization. Extend with custom indicators and overlays, push bars from local data for replay, and build full analysis workflows around your models.

Multi-symbol market dashboards

For trading desks and operations monitoring that need several symbols in view at once. Combine multi-pane layouts, long-range scrolling, and realtime feeds without losing readability on a single screen.