Meet our new service CalendarX.com

A calendar your audience can follow

AddEvent is an
Add to Calendar button
for one-time and multiple events,
and Event Management

If you are looking for an “Add to Calendar” button or an
API for on-the-fly event creation or an Event Manager for
your website or newsletters, then look no further.
AddEvent offers an easy, convenient way to create event
buttons. It's easy to use and install.

AddEvent was created in Palo Alto, California, May 2012 by
Michael Nilsson and is today considered to be the standard
“Add to Calendar” button on the Internet.

Try our buttons

Add to Calendar 05/07/2017 09:00 AM 05/07/2017 11:00 AM America/New_York Summary of the event

AddEvent example text.

This is the text entered in the event description field. The text can be plain text or simple formatted html. The AddEvent rendering engine converts and formats text beautifully and adjusts the formatting to the selected calendar media.

Example of a link

  • Many of our users use html to add lists like this one
  • HTML lists are converted into bullet lists
Location of the event Organizer organizer@example.com false MM/DD/YYYY
Add one event
Add to Calendar
Add multiple events

And our:

  • "Add to Calendar" buttons for newsletters
  • Event Manager
  • Custom Templates
  • API for on the fly event creation

AddEvent is:

  • Easy to use and install
  • 100% themable
  • Timezone and DST compatible
  • The leading calendar widget in the world
  • Great support (we will actually help you)

Customers

You're in good company. Awesome Internet Superstars
and Offline Ninjas use AddEvent too








Features

Install your new buttons in a few minutes

AddEvent helps you create an “Add to Calendar” for one-time and multiple events in a matter of minutes. Get started using our simple yet beautiful pre-built button or customize the design to fit your website or application. Do not worry about daylight savings time and time differences in all the different regions of the world - we have got it covered. AddEvent has been tested by millions of users and is trusted by companies from San Francisco to Sydney.

Works everywhere

AddEvent is carefully crafted and optimized for the most common browsers, tablets and mobile devices. In our mindset we go "way back" and so does our optimization - our buttons are even optimized for Internet Explorer 6 (yes, some people in the world still use Internet Explorer 6).

What about newsletters, campaign management tools and social media like Facebook and Twitter?

Sharing your event on social medias like Facebook or Twitter is easy with our event management tool. Simply create your event and share it or insert the event link in your newsletters or campaign tools. With our event management tool you are able to provide links for direct downloads or create a landing page where your users can add your event to their calendar of choice.

Custom templates and Direct URL Method (API)

If you’re comfortable hand-coding HTML, then you can customize the apperance of the landing page. We have created simple block elements and tags which makes it fast and easy to setup your own design. You can create an unlimited number of templates.

Our Direct URL Method (API) is a method suitable for developers who develop their own newsletters, work with Flash, mobile development etc.

Pricing

Personal

If you intent to use our services for your personal website, e.g. your blog or your wedding invitation you can apply for a free personal account. With a personal account you can access / use all features on AddEvent. Create a free account and check out the account section for more details on how to apply.

Company only $4.80 /month (if billed annually)

AddEvent will save you months of expensive development. Our services are highly maintained and have been tested by millions of people from San Francisco to Sydney. As a Premium Member our services become unbranded and you get access to all features. Our services include free support.

Key Features Premium
Pre-built “Add to Calendar” button (one-time event)
Timezone and DST compatible
SSL support (https)
Advanced javascript settings
Change labels in dropdown
Custom options in dropdown
Custom themes gallery
Custom CSS (ability to customize the button)
Supported calendars Apple Calendar, Google Calendar, Outlook, Outlook.com and Yahoo Calendar.
Supported devices All modern browsers and phone devices like Android, iPhone, Samsung, Windows.
Event reminders in Outlook, iCalendar (MAC) etc.
Recurring events in Outlook, iCalendar (MAC) etc.


Pre-built “Add to Calendar” button (multiple events)


Timezone and DST compatible
SSL support (https)
Advanced javascript settings
Change labels in dropdown
Custom options in dropdown
Custom themes gallery
Custom CSS (ability to customize the button)
Supported calendars Apple Calendar, Google Calendar, Outlook, Outlook.com and Yahoo Calendar.
Supported devices All modern browsers and phone devices like Android, iPhone, Samsung, Windows.


Event Management Tool for newsletters and campaign tools, eg. MailChimp, Marketo, Salesforce, CampaignMonitor, flash, iPhone, Android etc.


Direct URL Method (API) for dynamic calendar creation with optional landing page
Custom landing page for events
All AddEvent branding removed
Support Priority

Updates

Building AddEvent with our users is the real deal to us.
We keep track with all changes made so our users are kept in the loop.

Update (Friday, March 24, 2017)

Information

​Three weeks ago our web host (Amazon) experienced what looked like multiple attempts to take down their services. A lot of websites and major services experienced issues and we did too. We even had downtime.

The purpose of using a Premium service like AddEvent is knowing that it's constantly being developed, that it works and does the job well.

We have spent a significant time going through our code to see where we could optimize processes to prevent downtime. All code has been reviewed, and we've done classic performance optimization like closing database connections faster, limiting results etc. We've also restructured our statistics runtimes and now only run them once a day.

We've done a lot of new updates to our service during the past month and we're developing new features as we speak. All thanks to our users who request new features all the time.

Hope you'll have a great weekend!

Update (Tuesday, February 14, 2017)

Changed

In the "multiple events" section it's possible to import external calendars. We've made a few improvements to the importer.

We have:

- Fixed unescaping/escaping of special foreign characters

- Fixed an issue with all day events spanning over multiple days

- Enabled alarms/reminders

- Enabled the possibility to use time zones within date/time, e.g. DTSTART;TZID=Asia/Jerusalem:20171008T201000

Update (Saturday, January 14, 2017)

Changed

We have added a new parameter (stream) to the "Direct URL Method". The method can be used for attaching event files to your existing Mail API.

An example:
A user is sending out email reminders to his clients. The user is using Mandrill (by MailChimp) to send the reminders. The user automatically attaches an event file in the email reminder so his clients can click the event file and have it added to his calendar.

Some email clients already do a great job detecting attached event files. Below is an example on how Google does it.

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