OmniTools

QR Code Generator & Scanner

Generate QR codes for text, URL, WiFi, and scan QR codes via camera/file.

Basis: ISO/IEC 18004 — QR Code bar code symbology specification·2026-08-28 verified·Editorial policy

Before you rely on this

Raising the error correction level survives more damage but fits fewer characters at the same size. In print, a QR code fails to scan if each module is too small or the four-module quiet zone is missing — and remember that a scanner cannot see where the encoded URL leads before opening it.

Tool Overview & Key Purpose

Generate custom QR codes for website URLs, Wi-Fi credentials, plain text, and contact cards in high-res PNG/SVG.

Step-by-Step Usage Instructions

1STEP 1

Choose QR content type (URL Link, Wi-Fi Auto Connect, Plain Text, Email).

2STEP 2

Input text/link data and customize code colors, background, and center logo.

3STEP 3

Select Error Correction Level (Low, Medium, Quartile, High).

4STEP 4

Download high-resolution PNG or vector SVG file.

Real-World Scenarios & Practical Cases

3 Practical CasesScenario #1

Store & Cafe Instant Wi-Fi QR Code

Generate a Wi-Fi QR code containing network SSID and password so guests connect instantly without typing passwords.

Drastically improves customer convenience.Scenario #2

Printed Business Card Portfolio Link

Embed high-contrast QR code on printed cards leading directly to online portfolios or vCards.

Use SVG format for vector print scaling.Scenario #3

Event Digital Feedback Survey QR

Display QR code leading to Google Forms at event exits for quick participant survey collection.

Set High (H) error correction when overlaying center logos.Specification followedISO/IEC 18004 QR standard with Reed-Solomon Error Correction algorithms.

Pro Tips & Key Considerations

Ensure high visual contrast; dark code on light background works best.High (H) Error Correction recovers up to 30% damaged or covered code data.

Frequently Asked Questions (FAQ)

Sources & References

ISO/IEC 18004:2015 — QR Code Bar Code Symbology Specification Denso Wave — About QR Code (Official Inventor)

Basis: ISO/IEC 18004 — QR Code bar code symbology specification · 2026-08-28 verified