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QR Code Generator

Open in Nocthink

Module: Tools · URL: /tools/qr-code · Responsible role: Staff (every staff member) · Also used by: Owner/Director and all other roles (same tool, nothing is shared or stored)

QR Code Generator — content type picker, URL field, colour and size controls, logo upload, and an empty preview waiting for content

Screenshot: Andrew Price (Senior Researcher), Nocthink Demo Institute demo data.

Why I use this page

I make QR codes here for posters, slides, name cards and event signage: a link to a registration form, a Wi-Fi login for a workshop room, a pre-filled email or SMS. Everything is generated in my browser and downloaded as a PNG — nothing is uploaded or saved — so I use it whenever I need a code quickly and in our brand colours.

What's on the screen

  • Header — back button to Tools, title QR code generator and "Make a QR code for a link, text, email, phone, SMS or Wi-Fi, with your own colours, logo and frame. It is made in your browser and downloads as a PNG; nothing is uploaded."
  • Left column (settings)
    • Content type — URL, Text, Email, Phone, SMS, WiFi.
    • Content — fields for the chosen type (see below).
    • Colours and size — Foreground and Background (colour swatch plus hex field), Size slider (128–512 px), Error correction L / M / Q / H with its recovery percentage (Low 7%, Medium 15%, Quartile 25%, High 30%).
    • Logo — Upload a logo (PNG, JPG or SVG); once uploaded, Logo size (10–40%), Excavate background toggle and a remove (×) button.
    • Frame — None, Square, Rounded, Label ↓, Label ↑; for a frame, Frame colour and Thickness; for label frames, Label text (default "SCAN ME", max 24 characters) and Label text colour.
    • Download PNG and Copy value buttons (disabled until content is filled).
  • Right column — Preview — shows size and error level (e.g. "256 × 256px · M"), the live QR code, and the encoded value underneath. Empty state: "Fill in the content fields to generate your QR code."

Content fields per type: URL; Text; Email address, Subject (optional), Message (optional); Phone number; Phone number and Message (optional) for SMS; Network name (SSID), Password, Security (WPA/WPA2, WEP, None) for WiFi.

How I …

  1. Keep Content type on URL.
  2. Paste the link into URL. For trackable scans, paste a short link from Shorten URL instead of the long URL.
  3. Check the Preview, then click Download PNG. The file is saved as qrcode-url.png.

Make a Wi-Fi code for a meeting room

  1. Click WiFi.
  2. Enter Network name (SSID) and Password, and choose Security (usually WPA/WPA2).
  3. Download the PNG and print it on the room sign.
  1. Set Foreground and Background with the swatch or by typing a hex code (e.g. #005354). Keep strong contrast — dark on light.
  2. Click Upload a logo and pick an image. The error correction switches to Q automatically if it was L or M.
  3. Adjust Logo size; leave Excavate background on so the logo sits on a clean area.
  4. Scan the preview with a phone before downloading. If it fails, reduce the logo size or set H.

Add a "SCAN ME" frame

  1. Under Frame, choose Label ↓ or Label ↑ (or Square / Rounded for a plain border).
  2. Set Frame colour (pre-filled from our organization's brand colour), Thickness, Label text and Label text colour.

Copy the encoded value

  1. Click Copy value to copy the exact string in the code (for example WIFI:T:WPA;S:…;P:…;; or mailto:…), useful for testing or documentation.

Access & permissions

  • Tools is open to every member of the organization; no role is needed.
  • Nothing is stored on the server, so there is nothing for others to see or for an administrator to manage.

Caveats

  • Switching Content type clears the fields I already filled.
  • The URL field is not validated; a typo produces a valid-looking code that goes nowhere. Always test-scan.
  • The downloaded PNG is rendered at twice the selected Size (e.g. 512 px for a 256 px setting) for sharper printing.
  • The Wi-Fi password is embedded in clear text in the code; anyone who scans it can read it.
  • Starting colours, size and error level come from the organization's defaults in Settings → Apps → Tools; the frame colour comes from the company brand colour.

Limitations

  • The downloaded PNG includes the frame shown in the preview: padding, border colour and thickness, rounded corners and, for banner styles, the label (default "SCAN ME"). With frame style None it is the bare QR code (with logo).
  • No SVG or PDF export, PNG only.
  • Codes are not saved, listed or tracked; a QR code for a plain URL counts no scans. Use a short link to get scan statistics.
  • No vCard (contact card) or calendar-event type.
  • Shorten URL — create a trackable short link to encode; each link page also offers a plain QR Download PNG.
  • Link Clicks — see scans of short links used in QR codes.
  • Dashboard — Tools landing page.
  • Tools settings — default QR colours, size and error correction.
  • Company — brand colours used for the default frame colour.