Comparison
UseQR vs the qr-code-styling library
qr-code-styling is the MIT-licensed JavaScript library that powers the styled-code UIs of many generators: dots, rounded modules, custom eyes, embedded logos. If you are building your own generator interface, it is the right foundation. If you just need styled codes now, with decode-verification and typed payloads, use a finished product instead.
The library behind the generators
qr-code-styling occupies an interesting position: it is the MIT-licensed JavaScript
library that many styled-QR generator sites are built on. Rounded modules, dot styles,
custom corner eyes, gradients, an image in the middle, when you see those options in a
web generator, there is a fair chance this library (or a fork of it) is doing the
drawing. It renders to canvas or SVG in the browser, which also means tools built on it
inherit client-side generation for free.
So the comparison is really: build on the library, or use a finished product? Both answers are right for different people, and this page is the sorting function.
If you are building a generator: use the library
If your task is "add a styled QR designer to our app", qr-code-styling is the right
starting point and we would not suggest reinventing it:
- The styling vocabulary is proven (module shapes, eye shapes, gradients, logo embedding), with a straightforward options object.
- It renders client-side, so your users' payloads never leave their browser.
- MIT licence, so commercial embedding is uncomplicated.
Two things to build alongside it, from experience:
- A verification step. The library draws whatever you configure, including configurations that do not scan, an oversized logo, low-contrast gradients, eyes restyled past recognition. Rendering is not scanning; decode the output before you ship it. The failure mode is silent and surfaces at the print shop.
- Payload builders. The library takes a string. WiFi escaping, UPI fields and vCard quirks are your problem, and they are where codes break more often than styling is.
If you just need codes: use a product
If the actual requirement is "a styled code with our logo that provably scans, today", building on a library is a detour. A finished generator gives you:
- The same styling vocabulary: module shapes, custom eyes, logo embedding, without writing any code.
- The verify loop built in. UseQR decodes every code before download; a styling combination that breaks scannability is rejected at creation. This is the piece most library-based generator sites skip, and it is why logo codes that do not scan are a whole genre of support request.
- Typed payloads with real spec validation, 28 types.
- An API for automation, no key, SVG/PNG/PDF, batch.
And if you are evaluating which product: the honest criteria are in the logo-generator roundup.
Side by side
| qr-code-styling (library) | UseQR (product) | |
|---|---|---|
| What it is | JS drawing library | Generator + API + verification |
| Licence | MIT | MIT |
| Client-side | Yes (in-browser rendering) | Yes |
| Styling options | Extensive | Extensive |
| Decode-verification | Not included, build it | Built in |
| Payload builders | No, strings only | 28 spec-validated types |
| Best for | Building your own generator UI | Getting verified codes now |
The stack is not either/or, incidentally: a product built on solid libraries plus a
verify loop is exactly what UseQR is. If you are building your own UI on
qr-code-styling, the piece worth copying is the verify step, render, rasterise, decode,
and refuse to ship anything that does not read back.
FAQ
What is qr-code-styling used for?
It is the JavaScript library many generator websites use to draw styled QR codes (rounded and dot modules, custom corner eyes, gradients and embedded logos) rendering to canvas or SVG in the browser under an MIT licence.
Do styled QR codes from qr-code-styling always scan?
No. The library draws whatever it is configured to draw, including combinations that fail, oversized logos, weak contrast, over-styled eyes. Any pipeline built on it should decode the output with an independent reader before use.
Should I build my own QR generator or use an existing one?
Build when the generator is your product or must live inside your app: the library makes that tractable. Use an existing product when you need verified codes now; the styling options are equivalent and the verification is already done.
Is qr-code-styling free for commercial projects?
Yes, it is MIT-licensed. You can embed it in commercial products without fees; the licence obligations are limited to preserving the copyright notice.
Try it: free, no signup
Related
- UseQR vs the qrcode npm package, A product and a library are different tools. Inside a Node codebase the qrcode package is often the right call: here is the honest decision matrix.
- UseQR vs the Python qrcode library, In a Python codebase, qrcode or segno is usually the right answer: we say so. Where an API earns its place: no-dependency scripts, typed payloads, verification.
- The best open-source QR code generators, The genuinely open options: qrcode (npm), python qrcode and segno, ZXing, Nayuki's reference implementation: judged by licence, maintenance activity and correctness evidence.
- The best QR code generator with a logo: judged by criteria, not kickbacks, What logo support actually requires (EC level H, under 20% coverage, a verify step), and which free tools genuinely provide it without watermark or signup.