Old Slido

What is an event code and how to change it?

  • 29 April 2024
  • 0 replies

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Slido is gradually rolling out a new user interface. If the below steps and visuals match what you are seeing within your account, then you are using the old interface and this article is for you. If not, please see this version.


An event code is a unique code that allows participants to join your event during the set event dates.

Every event gets a default system-generated event code consisting of 6 characters. We recommend changing it to something truly unique, so your participants can easily join your event.

To collect questions or poll votes in advance, send a direct link to your Slido event


In this article:


Change your event code


Customize your event code to something short, simple, and easy to remember. Here’s some inspiration for you:

  • Abbreviate your event name (#MT18)
  • Use your Twitter hashtag (#marketingtrends)
  • Select the name of your team meeting (#JulyAllHands)
Changing the event code while creating a Slido event
Changing the event code while creating a Slido event


The maximum length of the event code is 32 characters. It can include the following: 

  • Numbers and letters
  • -” and “_”
  • Capital letters

Other symbols and spaces are not allowed and therefore your event settings won't be saved. The event code is not case sensitive but it will be displayed with capital letters if used.

To change the event code after you created an event:

  1. Go to Settings
  2. Type in your new event code under Basic information and hit Save

In case your new event code matches somebody else’s event code, you’ll get a red error message and no green “check” sign. In that case, you’ll need to change it again. Check Tip #1 below to get some suggestions.



Useful tips & Troubleshooting


  • There can't be two events with the same event code at the same time
    When trying to change the event code, you can get an error Change code or adjust dates as this code is already taken. This means, that there already exists a Slido event that uses the same event code during event dates which overlap with yours. This Slido event could have been created either by you or by another Slido user. To fix it, you can either play around with the start and end dates of your event or change your event code. You can add, for example, some numbers or letters to it, or change it completely to make it more unique.
  • Testing the event code before the start date
    The event code is only available for your participants to join the event during the event dates. Therefore, if you're trying to put yourself in their shoes three days or even a month in advance, you'll see the error: Sorry, there is no such event active right now and your event listed below as an "Upcoming event". 
  • Crowdsourcing questions and collecting poll votes before the live event or meeting
    Send a direct link to your Slido event to let your participants submit their questions or cast their vote in polls in advance.


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