QR Code Generator
Turn any link or text into a downloadable QR code, instantly.
What Is the QR Code Generator?
How Is the QR Code Generator Calculated?
A QR code encodes data as a grid of black and white squares using Reed–Solomon error correction, which lets scanners read the code correctly even if part of it is damaged or obscured. Higher error correction levels rebuild more of the code from less data, at the cost of a denser, more complex pattern.
QR Code Generator Example
Entering https://example.com produces a QR code that opens that page instantly when scanned with any phone camera.
How to Use the QR Code Generator
Step 1
Type or paste the text, link, or data you want to encode.
Step 2
Choose a size and error correction level.
Step 3
Optionally customize the foreground and background colors.
Step 4
Click Download PNG to save the QR code as an image.
Benefits
- Generates and renders the QR code instantly in your browser — no upload or server round-trip.
- Supports adjustable error correction, so codes still scan even if printed small or partly covered.
- Lets you customize colors to match branding while keeping the code scannable.
Common QR Code Generator Scenarios
Scenario 1
Sharing a website link, Wi-Fi password, or contact card on printed material.
Scenario 2
Adding a scannable link to business cards, flyers, or product packaging.
Scenario 3
Linking a physical poster or menu to an online page without typing a long URL.
Understanding Your Result
A denser-looking QR code usually means either more data was encoded or a higher error correction level was chosen — both increase the number of squares needed. If the code renders as blank, the input text is too long for the current error correction level; try shortening it or lowering the level.
Tips
- Keep contrast high between foreground and background colors — low-contrast codes can fail to scan.
- Use higher error correction (Q or H) if the code will be printed small or may get partially damaged.
- Test the downloaded code with a real phone camera before printing it at scale.
Common Mistakes
- Encoding very long text at a high error correction level, which can make the code fail to generate.
- Choosing background and foreground colors that are too close in contrast for a camera to distinguish.
- Printing the code too small relative to how far away it will be scanned from.
Frequently Asked Questions
Does this tool store or send my QR code data anywhere?
No, the QR code is generated entirely in your browser — the text you enter is never sent to a server.
What's the maximum amount of text a QR code can hold?
It depends on the error correction level, but a QR code can typically hold a few thousand characters of text or a couple hundred bytes of binary data before it becomes too dense to scan reliably.
Will the downloaded QR code work for printing?
Yes, the PNG download is generated at your selected pixel size, which is suitable for most digital and print use — choose a larger size for high-resolution printing.
Can I encode Wi-Fi credentials or a vCard, not just a URL?
Yes, any text works, including formatted strings like Wi-Fi network configs or vCard contact data — just paste the correctly formatted string into the input.
Do QR codes expire?
No — a QR code encoding static text or a URL doesn't expire on its own; it will keep working indefinitely as long as any URL it links to remains active.
What's the difference between a static and dynamic QR code?
A static QR code (like the ones this tool generates) has its content permanently embedded, while a dynamic QR code points to a redirect service where the destination can be changed later without reprinting the code.
Does a QR code's design or color affect whether it scans correctly?
Sufficient contrast between the QR code and its background is essential for reliable scanning — very low contrast or unusual color combinations can cause scanning failures even if the code itself is valid.
Can I add a logo to the center of my QR code?
This tool generates a standard QR code without a logo — QR codes do have built-in error correction that can tolerate small central obstructions, but adding a logo typically requires more specialized QR generation software.
Why would my QR code fail to scan even though it looks correct?
Common causes include insufficient quiet space (margin) around the code, too much data causing an overly dense pattern, or the scanning app having trouble with certain contrast or lighting conditions.
Important Information
QR codes are generated locally in your browser and are not stored or transmitted anywhere.
Last updated: July 27, 2026