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AllOneTools

QR code generator

About QR code generator

This tool builds standard QR codes locally in your browser using the industry‑common encoding libraries. You can encode arbitrary text or URLs, generate a Wi‑Fi Droid/iOS‑compatible WIFI: string, or a minimal vCard. Error correction level, module size, quiet zone (margin), and dark/light colors are adjustable; the preview updates as you type. Images are rendered to PNG for download or clipboard copy where your browser supports it.

Key Features

  • Modes: free text / URL, Wi‑Fi (WPA/WEP/open), and vCard (name, org, phone, email, URL)
  • Error correction levels L / M / Q / H
  • Width up to 1024 px, adjustable quiet zone, custom dark and light colors
  • Download PNG and copy PNG to clipboard (when supported)
  • Live preview and optional “encoded payload” panel for debugging
  • Runs entirely in the browser — content is not sent to our servers

Use Cases

  • Print a QR for your landing page on a slide or poster
  • Let guests join Wi‑Fi without typing the password
  • Share a contact block at events from a vCard QR
  • Embed payment or app-store links in packaging

Pro Tips

  • Higher error correction (Q/H) survives print damage but increases density — use M for most screens.
  • Very long URLs need a larger module count; if generation fails, shorten the URL or lower correction level.
  • For dark backgrounds in print, swap dark/light colors so scanners see enough contrast.
  • Wi‑Fi QR strings follow the de‑facto WIFI: scheme; some old scanners may not support WPA3 labels.

Frequently Asked Questions

Is my data sent to a server?

No. QR rendering runs in your browser. We do not receive the text you encode.

Can I use a logo in the center?

Not in this version — center logos require careful margin design. Use high error correction (H) if you add artwork in an image editor after export.

Are vCard fields complete?

This page generates a small vCard 3.0 subset suitable for QR scanning. For full contact schemas, export from your contacts app.