---
title: "Candlestick Chart Maker (Free Image Generator)"
description: "Turn OHLC price data into a clean candlestick chart image. Free generator, a one-line embed that re-renders on fresh data, and an API to make charts at scale."
url: "https://www.imejis.io/blogs/tutorials/candlestick-chart-image-generator"
published: "2026-07-25"
---

# Candlestick Chart Maker (Free Image Generator)

You make a candlestick chart image by entering your OHLC data (open, high, low, close for each period) into a chart maker and downloading the result as a PNG or SVG. It's built for price summaries you drop into reports, emails, and alerts, not for live trading.

## What a candlestick chart shows

Each candle covers one period: a day, an hour, a minute, whatever your data uses. Four numbers define it. The **open** and **close** set the top and bottom of the candle body. The **high** and **low** set the thin wicks that stick out above and below.

Two states, and that's it:

- **Bullish candle:** close is above open. Price finished the period higher than it started. Usually green.
- **Bearish candle:** close is below open. Price finished lower. Usually red.

A row of these tells a quick story: where price opened, how far it swung, where it landed. That's why candlesticks are the default for stock and crypto price summaries. They pack four data points into one readable shape.

Worth being clear on the use here. A chart image is a snapshot for humans to read: a market recap in a newsletter, a "here's how the week went" panel in a report, a price alert in Slack. It's not a live terminal, and nothing on this page is financial advice. If you need real-time streaming quotes and order entry, use a trading platform. If you need a clean picture of what already happened, an image is exactly right.

## Make one free

Open the [candlestick chart maker](/tools/candlestick-chart-maker). Enter your OHLC data per period, pick the colors for up and down candles, and download the chart. No signup, no watermark, and you can export a PNG for emails and docs or an SVG when you want it crisp at any size.

The input is generic on purpose. Paste rows of open, high, low, and close, and the tool draws the candles and wicks for you. Ticker symbols, exchanges, asset classes: none of that matters to the chart. If you have the four numbers per period, you get a candlestick chart.

## Embed it anywhere

A chart image embeds like any other image. One line of markdown or HTML and it renders inline:

```html
<img
  src="https://your-render-url"
  alt="BTC daily candlestick chart"
  width="600"
/>
```

Here's the useful part. If you point at a **render URL** instead of a saved file, the image re-renders every time it loads. Push fresh OHLC data at the end of the day and the same URL returns an updated chart. Nobody edits the email, nobody re-exports anything. A daily market summary image in a newsletter or a Slack post just stays current on its own.

Save a static file when you want a fixed snapshot, like a chart pinned to a specific date in a report. Use a render URL when the picture should track new data.

## Generate at scale

Making one chart by hand is fine. Making fifty, or one every morning, is where the API earns its keep.

Candlestick is a first-class API component, so a chart is [a component you configure](/components/candlestick) and render on demand. One call takes your batch of OHLC data and returns the image. A few ways people wire it up:

- **On a schedule:** a cron job pulls yesterday's prices, hits the render URL, and drops the chart into a morning digest.
- **Per request:** your app renders a chart on the fly for whatever symbol and range a user asks for.
- **Through an [AI agent over MCP](/agents):** the agent gathers the OHLC data and calls the render itself, no glue code from you.

The [API docs](/apis) have tested examples you can copy, so you're not guessing at the request shape. Design the chart once, then feed it data.

## Start making candlestick charts

Grab the numbers, get the picture.

- Build one now in the [candlestick chart maker](/tools/candlestick-chart-maker), free, PNG or SVG.
- Configure it as an API [component](/components/candlestick) and render on demand.
- Automate it through the [API](/apis) or an [AI agent](/agents).

The free plan covers [100 renders a month](/pricing), enough to wire up a daily market summary and see it land in your inbox before you commit to anything.