---
title: "QR Code Maker (Free Image Generator)"
description: "Turn any string into a scannable QR code image. Free maker with custom colors, a one-line embed, and an API that encodes a fresh payload on every render."
url: "https://www.imejis.io/blogs/tutorials/qr-code-image-generator"
published: "2026-08-02"
---

# QR Code Maker (Free Image Generator)

Paste a string into a QR code maker, pick your colors, and download a scannable PNG. The value can be a link, a coupon code, a Wi-Fi login, or plain text. If a phone camera can read it, this will encode it.

## What a QR code shows

A QR code is a grid of black and white squares called modules. Those modules store a string. A scanner reads the pattern and hands your phone back the original text, usually a URL it opens right away.

A few settings shape the code:

- **Value:** the string being encoded. A landing page URL, a discount code, a Wi-Fi payload, anything.
- **Colors:** the dark modules and the light background. You can swap black on white for your brand palette.
- **Margin:** the quiet zone, the clear border around the grid. The default of 4 modules keeps scanners happy.
- **Error correction:** levels L, M, Q, and H. Higher levels rebuild the data even when part of the code is scratched or covered. Level H handles up to 30% damage.

The trade there is real. More error correction means a denser grid for the same value. That's fine on screen and worth it in print, where codes get scuffed. The [QR Code standard](https://en.wikipedia.org/wiki/QR_code) has more on how that recovery works if you want the detail.

## Make one free

Open the [QR code generator](/tools/qr-code-generator). Type or paste your value, set the dark and light colors, pick an error correction level, and download. No signup, no watermark. You set the pixel size before you download, so you can pull one big enough for print as easily as one sized for an email.

The input is deliberately open. It doesn't care whether your string is a URL, a coupon like `SAVE20-9F3K7Q`, or a Wi-Fi config. Give it text, get a code.

## Embed it anywhere

A QR image drops into a page like any other image. One line of HTML:

```html
<img
  src="https://your-render-url?value=https://imejis.io/e/TKT-84721"
  alt="Event check-in QR code"
  width="240"
/>
```

Here's the part that matters. Point at a **render URL** and pass the value as a parameter, and the code is generated at load time. Change `value` and you get a different, scannable QR without touching the design. That's how you print one unique code per ticket or per coupon: the layout stays fixed, the payload changes per render.

## Generate at scale

One code by hand is easy. One per attendee, or one per coupon in a mailing list, is where the API pays off.

QR is a first-class API [component](/components/qr) you configure once and render on demand. Each call encodes the value you send, so a batch of unique links becomes a batch of unique codes. A few ways people wire it up:

- **Per ticket:** your booking system passes each attendee's check-in URL and gets back a personal QR.
- **Per coupon:** a campaign tool encodes a one-time redemption code into every image it sends.
- **Through an [AI agent over MCP](/agents):** the agent builds the value and calls the render itself, you don't touch a line of code.

The [API docs](/apis) lay out working calls you can copy, so nothing about the request is a guess.

## Start making QR codes

Give it a string, get a code that scans.

- Build one now in the [QR code generator](/tools/qr-code-generator), free, PNG download.
- Configure it as an API [component](/components/qr) and render on demand.
- Automate a unique code per ticket through the [API](/apis) or an [AI agent](/agents).

The free plan covers [100 renders a month](/pricing), enough to encode a real batch of tickets before you spend anything.