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 — our source is readable if you want to see how the pieces fit before building your own.
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 — and hosted OSS products, judged by licence and maintenance.
- 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.