logoImejis.io

QR Code Maker (Free Image Generator)

imejis

imejis

@Imejis_io

#tutorials
QR Code Maker (Free Image Generator)

Paste a string into a QR code maker, pick your colors, and download a scannable PNG or SVG. 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 showsWhat 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 has more on how that recovery works if you want the detail.

Make one freeMake one free

Open the 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. Grab a PNG for emails and docs, or an SVG when you need it crisp at poster size.

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 anywhereEmbed it anywhere

A QR image drops into a page like any other image. One line of 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 scaleGenerate 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 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: the agent builds the value and calls the render itself, you don't touch a line of code.

The API docs lay out working calls you can copy, so nothing about the request is a guess.

Start making qr codesStart making QR codes

Give it a string, get a code that scans.

The free plan covers 100 renders a month, enough to encode a real batch of tickets before you spend anything.

Frequently Asked Questions

Open a QR code maker, paste the string you want to encode (a URL, coupon code, or Wi-Fi payload), pick the module and background colors, and download the result as a PNG or SVG. No signup needed. If a phone camera can read the string, this can encode it.

Yes. QR is an API component, so one render call encodes whatever value you pass. Send a unique ticket URL or coupon code per request and the same render URL returns a fresh, scannable code each time. That's how you get one code per attendee without designing each one.

Levels L, M, Q, and H, with M as the default. Level H survives up to 30% damage, so reach for it when you print small or drop a logo over the center of the code. Lower levels pack the same data into a slightly simpler grid.

Keep the default quiet-zone margin of 4 modules, hold strong contrast between the dark and light colors, and raise the error correction level for small or decorated codes. A scanner needs that clear border and contrast to lock on.
See all posts