Wrenlio
QR Tools

QR Code Generator

Generate a downloadable QR code from any text or URL, with adjustable size and error correction level.

About this tool

QR codes pack a URL, plain text, or other short data into a scannable square pattern that any phone camera can read. This generator builds the code entirely in your browser and lets you download it as a PNG — no account, no expiring links, no tracking layer between you and the code.

How to use it

  1. 1Type or paste the text or URL you want to encode.
  2. 2Choose an output size in pixels.
  3. 3Choose an error correction level — higher levels stay scannable even if part of the code is damaged or covered, at the cost of a denser pattern.
  4. 4Click "Download PNG" to save the code to your device.

Common mistakes to avoid

  • Encoding a URL without the https:// prefix, which some scanners fail to interpret as a link.
  • Choosing a low error correction level for a code that will be printed small or placed somewhere it might get scuffed.
  • Generating a code from a URL that later changes or expires — the QR code itself is static and encodes the exact text given.

Use cases

  • Sharing a link to a menu, portfolio, or event page for people to scan in person.
  • Adding a scannable link to printed materials like flyers, business cards, or packaging.
  • Encoding Wi-Fi credentials or contact details for quick scanning.
  • Generating a code for a product page, App Store listing, or payment link.

Frequently asked questions

Does this QR code expire?

No. The QR code encodes your exact text directly — there's no redirect service involved, so it works for as long as the underlying data (like a URL) stays valid.

What error correction level should I use?

Medium (15%) is a good default. Use High (30%) if the code will be printed small, placed outdoors, or might get partially obscured, such as with a logo overlay.

Is any of this data sent to a server?

No. The QR code is generated and rendered entirely client-side using canvas — your text never leaves your browser.

QR & Mobile

Practical gear for sharing and scanning QR codes in person.

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