What is the maximum amount of data I can encode in a QR code?

QR codes can store up to 3,000+ bytes, but more data means more modules (dots) and a denser code that's harder to scan. For practical use: keep URLs under 150 characters, plain text under 500 characters, and WiFi credentials under 200 characters. Our tool uses medium error correction (M level), which allows 15% damage before the code becomes unreadable.

How do I create a WiFi QR code that phones can scan to connect?

Select the WiFi tab, enter your network name (SSID) exactly as it appears in the router settings, your password, and select WPA/WPA2 for modern routers. When scanned with an iPhone (iOS 11+) or Android (Android 10+), the phone prompts to join the network automatically. No app needed — it works with the built-in camera app.

Can I add a logo to the center of the QR code?

This tool generates standard QR codes without embedded logos. Adding a logo overlays the center of the QR code, which is possible because QR codes have built-in error correction. For logo-embedded QR codes, use a design tool like Canva or a dedicated QR customizer that handles the error correction level appropriately.

What size should the QR code be for printing?

The minimum printable size for reliable scanning is about 2×2 cm (0.8 inches). For most uses: business cards (1.5×1.5 cm minimum), flyers (3×3 cm), posters (5×5 cm or larger). The SVG format is ideal for print as it scales to any size without quality loss. For print, use the SVG at 300 DPI and set the physical size in your design software.

How long do QR codes last? Do they expire?

Static QR codes (like those generated here) never expire. The QR code itself is just an encoding of the text or URL — it will scan correctly forever. The linked URL may change or go offline (404), but the QR code doesn't expire. Dynamic QR codes (offered by paid QR services) can be edited after printing, but require a third-party service to redirect scans.

QR Code Generator — Free PNG & SVG Download

Generate QR codes for URLs, plain text, and WiFi network credentials. Download in PNG format for print materials or SVG for scalable vector graphics. Choose your output size and scan with any smartphone camera. QR codes are generated entirely in your browser using the qrcode library — no data is sent to any server.

URL

Size: 300px

How to use this tool

Choose the content type
Select URL for website links, Text for plain text or contact info, or WiFi for network credentials that open automatically in phone settings.
Enter your content
For URL: paste the full URL including https://. For WiFi: enter the network name, password, and security type (WPA/WPA2, WEP, or open). For Text: type or paste any text up to ~2000 characters.
Adjust size and generate
Set the output size from 100px to 600px. Click Generate QR Code — the QR code appears instantly with a preview.
Download PNG or SVG
Click Download PNG for raster images (print, presentations, web). Click Download SVG for scalable vector format (logos, laser cutting, scalable print materials).

Frequently asked questions

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QR Code Generator — Free PNG & SVG Download

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