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QRnook

Event QR code generator

Put the date, time and place in the code itself. People scan and add your event to their calendar — no link to type.

  • Free
  • No signup
  • Runs in your browser
  • Static codes don’t expire

Calendar event

What’s inside the codeExample

BEGIN:VEVENT
SUMMARY:Open Studio Night
DTSTART:20261120T190000
DTEND:20261120T220000
LOCATION:Ortega Studio\, Valencia
DESCRIPTION:Drinks\, models and a short talk at 8 pm.
END:VEVENT

Type your own details to replace the example.

Example53×53
Add to calendar
Version
9
Error correction
M
Capacity used
99%
Bytes
189

Scanability

97 / 100

Excellent

Enter valid content above to enable downloads. The code shown now is only an example.

Size & print options8.5 cm

Prints the code at the width above.

Static code — it never expires. The destination is up to you.

Design

Colours
ShapeSquare · Square
Modules
Corner frames
Corner centres
Logo—

PNG, JPG, WebP or SVG up to 5 MB. It stays on your device.

Caption“Add to calendar”
Error correction & marginM · 4 modules
Error correction

Higher levels survive more damage and logos, but make the code denser.

4 modules

The spec asks for 4 modules of empty space around the code.

Scanability

97 / 100

Excellent

  • Version 9 (53×53) — print it a little larger.

    Spec

  • Contrast 21:1 — strong.

    Spec

  • Dark code on a light background.

    Spec

  • Quiet zone of 4 modules.

    Spec

  • Error correction M restores up to about 15% of the data.

    Spec

  • Classic square modules and corners.

    Rule of thumb

  • 8.5 cm wide — fine for 40 cm away.

    Rule of thumb

A weighted estimate from the checks below — not a guarantee. Always test a printed proof with two different phones.

Legibility chart

Units
Estimated scanning distance for each printed width of this exact code.
PreviewWidthReads from about
30 cm≈ 1.4 m
20 cm≈ 94 cm
15 cm≈ 71 cm
10 cm≈ 47 cm
Recommended minimum for Flyer · 8.5 cm
8 cm≈ 38 cm
6 cm≈ 28 cm
5 cm≈ 24 cm

Estimate based on the 10:1 distance rule, adjusted for this code’s density. Phones and light vary.

How to use it

  1. Give the event a clear name — it becomes the calendar entry title.
  2. Set the start and, ideally, the end. Tick “All-day event” for festivals, deadlines or trips.
  3. Add the venue and a one-line description if useful.
  4. Scan to check your calendar app offers to add the event, then download.

How calendar codes work

The code contains a VEVENT block in the iCalendar format (RFC 5545) — the same format calendar apps exchange. Phones that support it show an “Add to calendar” prompt; some Android cameras show the text first and offer to add it from there.

Example: open studio evening

Commas and line breaks are escaped automatically so calendar apps read every field correctly.

Encoded content

BEGIN:VEVENT
SUMMARY:Open Studio Night
DTSTART:20261120T190000
DTEND:20261120T220000
LOCATION:Ortega Studio\, Valencia
DESCRIPTION:Drinks\, models and a short talk at 8 pm.
END:VEVENT

Time zones: what you type is what they see

Times are stored as “floating” local times, meaning the event appears at the time you typed, in whatever time zone the phone is in. That’s right for local events, where everyone is in the same place. For an online event with an international audience, state the time zone in the title or description (“19:00 CET”), or link to an event page with the link generator.

Keep it short

Everything you type ends up inside the code, so a long description makes a dense code that needs printing larger. Put the essentials in the event and detailed information on a web page.

Tips

  • Always add an end time — some calendars otherwise create a zero-length event.
  • Pair it with a location code on invitations for directions to the venue.
  • Test on both iPhone and Android before printing invitations.

Questions

Do all phones support calendar QR codes?

iPhones and most Android phones recognise them. A few camera apps only display the text; Google Lens and dedicated scanner apps offer “Add event”.

Can I add a reminder?

Reminders aren’t reliably imported from QR codes; people can add one when saving the event.

Can I change the date after printing?

The date is inside the code, so a new date needs a new code.

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