ORTEX Charts
The charting engine behind ORTEX, licensed for your product
A full financial chart in 77 KB gzip: toolbar, indicators, drawings, order flow and live data. It paints 100,000 bars in 32 ms, works on a phone, and carries no requirement to leave your application open to the public.
77 KB
Full chart, gzip
One file, tree-shakeable
32 ms
First paint, 100k bars
Lightweight Charts: 388 ms
1.8 ms
Live tick, full redraw
With two overlays and two studies
4.8 KB
Sparkline build
For tables and cards
@ortex-charts/financialWhy teams move
Four reasons a chart gets replaced
It is too heavy
Five megabytes of chart across 154 files is a second of blocked main thread on a mid-range phone. ORTEX Charts is one file: 77 KB with everything, 56 KB for candles and volume, 37 KB for a line chart, 4.8 KB for a sparkline. Nothing is loaded that the page does not use.
It is slow with real history
Typed-array columns and visible-range work mean a decade of minute bars opens as quickly as a month of daily ones. Run the benchmark below in your own browser rather than taking the number on trust.
The license does not fit
TradingView Advanced Charts is free only while the chart carries their mark and the page stays public and outside a paywall. Most fintech products are neither. ORTEX Charts is licensed for private, authenticated and paywalled applications, and the mark comes off with a white-label license.
The features stop where the work starts
Footprint bars, exact volume profile, market profile, cumulative delta, bar replay with higher-timeframe followers and session-anchored intraday bars are in the box. Several of them are the most requested missing features on the incumbents.
| What the page loads | JavaScript, gzip | Files | What that includes |
|---|---|---|---|
| ORTEX Charts, a line chart | 37 KB | 1 | Engine, scales, crosshair, one series |
| ORTEX Charts, candles and volume | 56 KB | 1 | Plus legend, price lines, crosshair readout |
| ORTEX Charts, the full chart | 77 KB | 1 | Toolbar, indicators, drawings, order flow |
| TradingView Lightweight Charts 5 | 55 KB | 1 | Series only: no toolbar, drawings or indicators |
| Highcharts Stock 11, with its stock tools | 194 KB | 9 | The set their own Stock Tools demo loads |
| TradingView Advanced Charts | 4.8 MB | 154 | The licensed drop, uncompressed on disk |
| ChartIQ | 4.4 MB | 65 | Transferred by their public demo |
Measured on 2026-09-04 with one method: our entry points bundled and gzipped, their published production files gzipped identically, file by file. A chart that draws a line pays for a line, which is why the first row is what it is. At 100,000 bars ORTEX Charts paints in 32 ms against 388 ms for Lightweight Charts. The full comparison, with the file lists, the features and the licensing.
In the box
A terminal chart, not a plotting widget
The same code powers the ORTEX terminal, so the features are the ones a trading product actually needs rather than the ones that demonstrate well.
Candles that behave
Candlesticks, bars, line, area, baseline, histogram, Heikin-Ashi and hollow candles, with log, percentage and indexed scales, and unlimited resizable panes.
Indicators you can extend
Eighteen built-in studies, and registerIndicator to add your own in JavaScript. Your indicator appears in the menu, the legend and the saved layout like a built-in one.
Drawings with intent
Trend lines, rays, channels, Fibonacci levels, rectangles, notes and measures, with a magnet, undo and redo, and JSON in and out so the host owns storage.
Order flow, properly
Footprint bars, volume profile, market profile, delta, cumulative delta and relative volume, computed from aggressor volumes rather than guessed from the close.
Events on the timeline
Earnings, dividends, filings, news and your own annotations as badges, lanes, callouts, lines and ranges, with tooltips and click events.
Replay and alerts
Step the history forward from any bar with higher-timeframe charts following, link charts together, and drag price alerts that report crossings to your application.
@ortex-charts/uiOrder flow
The features the incumbents keep saying no to
Footprint bars with imbalance marking, exact volume profile from real traded volume, market profile letters, and delta and cumulative delta computed from aggressor volumes. When the host supplies bid and ask volume, the numbers are exact rather than approximated from the close.
@ortex-charts/financialCustomization
Your colors, your buttons, your mark
Every color the engine paints comes from a token, so a theme change is a repaint rather than a rebuild. The toolbar is a list of switches plus your own actions. With a white-label license the ORTEX mark comes off, or is replaced by yours.
@ortex-charts/financialchart.setTheme({
name: "brand",
background: "#0C1519",
grid: "#16232A",
text: "#D7E0E5",
up: "#22C08A",
down: "#EF4E5A",
fontFamily: "Inter, system-ui, sans-serif",
palette: ["#7C5CE6", "#F5A524", "#4C8DFF"],
});Small charts
One library from the sparkline up
The same family covers the 4.8 KB sparkline in a table cell and the full chart on the stock page. A screening table with 200 rows draws every sparkline on one render frame, so a live update costs one paint rather than 200.
@ortex-charts/liteYour data
It draws what you give it, and asks for nothing else
Pass an array, implement a datafeed, connect a WebSocket, or describe your existing JSON with an adapter and let the library map it. Host series go on their own panes with their own scales and formatting. The chart never fetches anything by itself and never calls home.
@ortex-charts/financial@ortex-charts/financialPerformance
Do not take the number on trust
The benchmark on the left runs in your browser, on your machine, right now: create the chart, set 100,000 bars, wait for the first painted frame. The same test against TradingView Lightweight Charts is in the repository, and the method is written down.
Pricing
Priced for the tier people actually want
Team is per developer. White-label is per product, not per seat, because the feature being bought is the absence of somebody else's logo. OEM includes the source.
Team
$59
per developer, per month
Commercial use in your own products, including software as a service.
Buy nowStart
Ten lines to a chart your users will recognize
Install from the private registry, or drop in the hosted kit and skip the build step entirely. Both paths use the same license key and the same API.
import { createFinancialChart } from "@ortex-charts/financial";
const chart = createFinancialChart(document.getElementById("chart"), {
theme: "dark",
timeZone: "America/New_York",
resolution: "1D",
data: bars,
});
chart.addIndicator("ema", { length: 21 });
chart.setMarkers(earnings);
chart.live(myWebSocketSource);