Interactive QR tool
JavaScript QR Code Generator With Logo
Upload a logo, tune the safe overlay size, and download a QR code PNG without leaving the browser. This page is built for the direct generate-now workflow, while the companion article explains the implementation details.
Generate a QR code with logo
Upload a logo, keep the correction level high, and fine-tune the center overlay before downloading the final PNG.
Live preview
Browser-only rendering keeps the composition local and ready to download.
- Stay in the 18% to 25% logo range when the QR code needs to scan fast on phones.
- Use correction level H for branded QR codes unless you have a strong reason to reduce density.
- Prefer short URLs and high contrast colors when the overlay logo is important to the design.
Your text, logo file, and final QR composition stay in the browser during generation. The page does not need a server upload step before you download the PNG.
Why high correction matters
Logo overlays cover modules in the center of the code. Higher error correction gives the scanner more room to recover when part of the symbol is hidden.
Private by design
The text, QR rendering, and logo composition stay in the browser. No logo file needs to be uploaded to the server before you download the PNG.
Logo file recommendations
Transparent PNG logos usually work best. Start with a square asset of at least 200 by 200 pixels and keep the visual mark simple enough to stay readable at small sizes.
How to use this QR code generator with logo
These are the same steps reflected in the page schema so Google and users see a clear, tool-first workflow.
Enter a URL or text value
Paste the destination URL or plain text you want the QR code to encode.
Upload a logo
Choose a square logo file, then preview it in the center of the QR code.
Adjust the overlay settings
Fine-tune the logo size, keep the white plate enabled when needed, and use a high correction level for safer scans.
Download the PNG
When the preview looks right, download the final QR code PNG and test it on multiple devices.
JavaScript QR code generator code example
The interactive tool uses a QR rendering library first, then draws the uploaded logo onto the center of the same canvas.
Browser example with qrcode + canvas
import QRCode from "qrcode";
async function renderQrWithLogo(canvas, value, logoImage) {
await QRCode.toCanvas(canvas, value, {
width: 320,
margin: 2,
errorCorrectionLevel: "H",
});
const ctx = canvas.getContext("2d");
const logoSize = 72;
const x = (canvas.width - logoSize) / 2;
const y = (canvas.height - logoSize) / 2;
ctx.fillStyle = "#ffffff";
ctx.fillRect(x - 6, y - 6, logoSize + 12, logoSize + 12);
ctx.drawImage(logoImage, x, y, logoSize, logoSize);
}Example use case
A common workflow is encoding a short event URL, placing a centered brand mark over the code, then scanning the final PNG on both iPhone and Android before publishing it on print materials or social posts.
Scan reliability tips
If the code becomes hard to scan, shorten the payload first, keep the logo in the 18% to 25% range, and leave the white plate enabled so dark QR cells do not bleed into the logo.
Need the plain version?
Use the standard QR Code Generator when you only need URLs, text, or WiFi QR codes with no overlay image.
Open the plain QR Code GeneratorWant the deeper tutorial?
The companion article covers logo safe zones, React integration, browser-specific gotchas, and best practices for keeping the code scannable.
Read the with-logo tutorialFrequently asked questions
Can I add a logo to a QR code without a server upload?
Yes. This tool keeps the text, QR rendering, and logo composition in the browser so the uploaded image does not need to leave the device.
What error correction level should I use for a logo overlay?
High error correction, usually level H, is the safest default because it leaves more room for the logo to cover part of the code without breaking scan reliability.
How large should the logo be in the middle of a QR code?
A logo that covers roughly 18% to 25% of the QR width is a practical starting range. Larger overlays can make the code harder to scan unless the payload stays short and the contrast remains strong.
Should I use a static or dynamic QR code for branded campaigns?
Use a static QR code when the destination URL will not change. Choose a dynamic QR workflow only when you need to swap destinations later, track scans, or rotate campaign targets without replacing the printed code.
What improves scan reliability when a QR code includes a logo?
Keep the payload short, leave a white plate behind the logo, use strong contrast, and test the final PNG on real devices before publishing it. These steps do more for reliability than simply increasing the image size.