QR Server (goQR.me) API

Free QR code generator API with no key. Create QR codes as PNG, SVG or EPS at any size and colour using a single URL. Tested example and full parameter list.

No API key requiredCORS enabledHTTPSFree tier

Endpoint tested and returned HTTP 200 on 2026-08-19

What is the QR Server (goQR.me) API?

The QR Server API is a free QR code generation API that creates a QR code image from any text or URL using a single GET request. It requires no API key and returns PNG, GIF, JPEG, SVG or EPS at any size.

This API is unusual in that the response is an image rather than JSON, which makes it exceptionally easy to use: you can put the endpoint URL straight into an `<img src>` and a QR code appears, with no JavaScript at all.

It handles the encoding details that make QR codes actually scannable — error correction level, quiet-zone margin and contrast — through simple query parameters. The one rule worth remembering is that the data must be URL-encoded, or anything containing `&` or `?` will be truncated.

Quick facts

Base URL: https://api.qrserver.com/v1/create-qr-code/
Authentication: No key or registration.
Rate limit: No published limit; commercial use is permitted.
Pricing: Free, including commercial use.
CORS: Enabled — callable directly from browser JavaScript
Official docs: Read the docs

How to use the QR Server (goQR.me) API

Every request below was executed against the live API on 2026-08-19, and the response shown is the real body it returned — not an illustration.

1. Generate a 150x150 QR code PNG

GET https://api.qrserver.com/v1/create-qr-code/?data=ByteTools&size=150x150

curl

curl 'https://api.qrserver.com/v1/create-qr-code/?data=ByteTools&size=150x150'

JavaScript (fetch)

const res = await fetch("https://api.qrserver.com/v1/create-qr-code/?data=ByteTools&size=150x150");
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);

Python (requests)

import requests

res = requests.get("https://api.qrserver.com/v1/create-qr-code/?data=ByteTools&size=150x150", timeout=20)
res.raise_for_status()
print(res.json())

Response — HTTP 200

# This endpoint returns image/png, not JSON.
# The response body is the image itself, so it can be used directly as an
# <img src="..."> or saved to a file — there is nothing to parse.
#
# Verified: HTTP 200, Content-Type: image/png

Parameters

Parameter	Type	Required	Description
`data`	string	Required	The text or URL to encode. Must be URL-encoded. `ByteTools`
`size`	string	Optional	Dimensions as WIDTHxHEIGHT, from 10x10 to 1000x1000. `150x150`
`format`	string	Optional	png, gif, jpeg, jpg, svg or eps. `svg`
`color / bgcolor`	string	Optional	Foreground and background as RGB decimal or hex. `0-0-0`
`margin`	integer	Optional	Quiet zone in pixels. Defaults to 1; scanners need at least 4. `4`
`ecc`	string	Optional	Error correction level: L, M, Q or H. `M`

Response fields

(binary image)image: The response body is the image itself, not JSON. Content-Type reflects the requested format.

What you can build with the QR Server (goQR.me) API

Generate QR codes for tickets, menus or event check-in pages
Embed a QR code in an email or PDF using a plain img tag
Produce print-ready vector QR codes by requesting SVG or EPS format
Create Wi-Fi or vCard QR codes by encoding the appropriate text scheme

Common errors and how to fix them

Truncated or wrong content encoded

The `data` parameter was not URL-encoded.

Fix: Encode it — `&`, `?`, `#` and spaces all break the query string otherwise.

QR code will not scan

Margin too small or contrast too low.

Fix: Set `margin=4` or more and keep a dark foreground on a light background. Inverted colours often fail.

400

Size outside the permitted range.

Fix: Keep dimensions between 10x10 and 1000x1000.

QR Server (goQR.me) API — frequently asked questions

Is there a free QR code API with no API key?

Yes. The QR Server API generates QR codes from a single GET request with no key or signup, and permits commercial use. The response is the image itself.

Can I use the QR code API directly in an img tag?

Yes. Because the endpoint returns an image, you can set it as the `src` of an img element and the QR code renders with no JavaScript.

Why does my QR code fail to scan?

The two usual causes are too small a quiet zone and poor contrast. Set `margin=4` or higher, and keep the foreground dark against a light background — inverted QR codes are unreliable across scanners.

Can I generate vector QR codes for print?

Yes. Pass `format=svg` or `format=eps` to get a scalable vector output suitable for printing at any size.

Tools that pair with this API

QR Code Generator

Create QR codes for URLs, Wi-Fi, email, phone and SMS. Pick size, colors and error correction, then download a crisp PNG — free and private.

Barcode Generator

Generate Code 128 barcodes online with checksum, adjustable bar width and height, optional text label, and PNG download. Free and fully private.

JSON Formatter

Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.

QR Server (goQR.me) is an independent third-party service and is not affiliated with ByteTools or ByteVancer. Details on this page were verified on 2026-08-19; always check the official documentation before relying on this API in production, as terms and limits can change.