If you're looking to embed a timeline in your own website, you have a number of options which we'll outline below:
Every timeline maker should let you export your timeline as an image (or if not you can simply take a screenshot). Every website supports displaying images, so if you're fine simply displaying a static image, this is your easiest and most reliable option.
However, if you would prefer your embedded timeline be interactive, things become a bit more complicated because your options will depend on the capabilities of your Content Management System (CMS).
If your CMS supports iFrames (an inline frame), then you'll be able to include interactive timelines from timeline makers that support them. For example, there are a variety of methods for embedding iFrames on WordPress sites.
The iFrame code will look something like this:
For example, with Preceden, the embed code will look like this:
Tools that support iFrames:
There are also several open source timeline makers that you can use. They will allow you to host all of the code for generating the timeline yourself. You then use code to add content to your timeline. You can have the content be static for timelines that won't change much over time, or you can tie the code to your internal database to build the content dynamically.
Here's how we would recommend making the decision: