Introduction
Timelines are one of the most effective ways to communicate the flow of historical events or the progression of a project. However, creating visually appealing interactive timelines typically requires programming knowledge.
TimelineJS is an open-source timeline creation tool developed by the Knight Lab at Northwestern University. Simply enter data into a Google Spreadsheet to automatically generate beautiful, interactive timelines. It is licensed under MPL-2.0 and free to use.
Features of TimelineJS
1. No Programming Required
TimelineJS’s greatest appeal is the ability to create timelines without writing any code. Simply enter data into the Google Spreadsheet template provided by Knight Lab, configure sharing settings, and you’re done.
2. Media Integration
Each event can embed various media types, including images, videos, audio, tweets, and Wikipedia articles. Simply specify a URL, and the media is automatically displayed, making it easy to create visually rich timelines.
Supported media examples:
- Images (JPEG, PNG, GIF)
- YouTube / Vimeo videos
- SoundCloud audio
- Twitter tweets
- Wikipedia articles
- Google Maps
- Flickr photos
3. Beautiful Design
Generated timelines feature modern, visually polished designs. They are responsive, providing comfortable viewing on both desktop and mobile devices. Transitions between slides are smooth and animated.
4. Multilingual Support
TimelineJS supports over 60 languages, including Japanese. Date formats are automatically adjusted for each language.
Creation Process
Step 1: Prepare the Template
- Visit the TimelineJS website
- Click “Get the Spreadsheet Template” in the “Make a Timeline” section
- A Google Spreadsheet template opens — make a copy
Step 2: Enter Data
Enter data in each column of the spreadsheet. Key columns include:
| Column | Description | Example |
|---|---|---|
| Year | Year | 1868 |
| Month | Month (optional) | 1 |
| Day | Day (optional) | 3 |
| Headline | Event title | Meiji Restoration |
| Text | Description | The beginning of Japan’s modernization… |
| Media | Media URL | https://example.com/image.jpg |
| Media Credit | Media credit | National Diet Library |
The first row (Title slide) serves as the overall title slide for the timeline.
Step 3: Publish and Embed
- Change the spreadsheet’s sharing settings to “Anyone with the link can view”
- Paste the spreadsheet URL into the TimelineJS website
- Insert the generated embed code (iframe) into your website
Use Cases
Historical Timelines
Create educational history timelines by organizing major events chronologically and attaching related photographs and document images to each event.
Literary Chronologies
Arrange an author’s life events and publication dates, attaching cover images and links to reviews for each work, to create a literary research resource.
Project Documentation
Record the progression of a digital archive project, visually sharing milestone achievements with stakeholders.
Exhibition Digital Companions
Provide interactive timelines as digital companions for museum exhibitions, allowing visitors to browse chronological information on their smartphones.
Advanced Usage
JSON Data Format
For more advanced control, you can specify data directly in JSON format instead of Google Spreadsheets. This enables programmatic timeline generation or integration with databases.
Custom Styling
Customize the timeline’s appearance using CSS. Fonts, colors, and layouts can be freely modified to match your website’s design.
Self-Hosting
As open-source software (MPL-2.0), TimelineJS can be hosted on your own server. Download the source code from GitHub and run it in your own environment.
Considerations
- Google Spreadsheets require an internet connection
- BCE dates are supported but require specific configuration
- Media URLs must be publicly accessible
- Timelines with many events (100+) may have cluttered navigation
Summary
TimelineJS is an excellent tool for creating interactive timelines using nothing but Google Spreadsheets, with no programming required. With media integration, multilingual support, and beautiful design, it can be used across a wide range of applications — from DH research to education and exhibitions. It is the first tool to try when you want to visualize historical data.