Event QR code generator
An event QR code carries the title, start, end and place of an event, so a scan offers to add it to the phone's calendar. Opo Codes makes it for free in your browser, with no account, and reads it back to check it before you print.
Open the generatorFree. Runs in your browser.
How to do it
- Open the generator with Event already selected.
- Type the event title and pick the start date and time. Add an end, a place and a description if you want them.
- If the form says the end is before the start or the date does not exist, pick it again.
- Wait for the VERIFIED stamp, then download the code for your poster or invitation.
What is inside the code
The code holds an iCalendar event, the file format calendar apps use for invitations. Worked example: the title Tea tasting, Gulshan, starting 2026-12-18 at 16:30 and ending at 18:00. The code holds the lines DTSTART:20261218T163000, DTEND:20261218T180000 and SUMMARY:Tea tasting\, Gulshan. The backslash keeps the comma inside the title.
The event also carries a fixed ID made from its title, start, end and place, so the same form always gives the same code.
Times have no time zone
The form has no time zone to convert from, so the time is written as local time with no zone. A guest sees the event at 16:30 on their own clock wherever they are. That suits an event in one place. For an online event across countries, write the time zone in the title or description.
What the form refuses
An end that comes before the start is refused, and so is a date that does not exist, such as 30 February. An end that cannot be read is never silently dropped: the generator shows an error instead. Leave the end empty if the event has no fixed finish.
Keep the description short. Every extra line makes the code denser, and the generator warns you when the text is too much for one code.
Questions
Which calendar opens?
The phone offers its own calendar app. The behaviour depends on the phone. We have not tested every model, so scan your printed code once yourself.
Can I change the date after printing?
No, the event is inside the picture. Print a new code if the date moves.
Will guests get a reminder?
That is up to their calendar app. The code only adds the event.
Does it sell tickets?
No. It adds an event to a calendar. Unique ticket codes with a check-in list come from Bulk and the scanner.