| Web | Epub | App | Screen PDF | ||
| Devices | Any web browser | Any epub reader (Apple iBooks, Thorium Reader).
Support for many features will depend on the technical sophistication of your ereader software. Not compatible with Amazon Kindle. |
Android, Windows | Any PDF reader | Available to order from most online retailers |
| Clickable links | Yes | Yes. External links launch web browser. | Yes. External links launch web browser. | Yes. External links launch web browser. | External links are displayed as short URLs. |
| Multiple-choice questions | Yes, with automatic self-marking and feedback. | Some epub readers (e.g. Apple iBooks) support self-marking with feedback. | Yes, with automatic self-marking and feedback. | MCQs are visible with no self-marking or feedback. | MCQs are visible with no self-marking or feedback. |
| Slidelines | Yes. Click, tab or arrow keys to move through figures. | All images shown with captions, including a summary slide. | Yes. Click, tab or arrow keys to move through figures. | A single summary image with each slide’s text. numbered below. | A single summary image with each slide’s text. |
| Video | Yes. Streams in place from YouTube. | Click the thumbnail image or description to launch YouTube in a web browser. | Yes. Streams in place from YouTube, if your device is online. | Click the image or short URL to launch YouTube in a web browser. | Link to YouTube displayed as a short URL. |
| Definitions | Popups on bold, blue words. | Popups on bold, blue words in some epub readers (e.g. Apple iBooks). Other readers will show definitions in a box beside the first instance of the term in each unit. | Popups on bold, blue words. | In the sidebar, beside the first instance of the term in each unit. | In the sidebar, beside the first instance of the term in each unit. |
| Footnotes | Click footnote number for a popup. Also visible at end of unit. | Click footnote number to jump to the footnote at the end of the unit, where there is a link back to the text. (Some ereaders also provide a ‘Back’ button.) | Click footnote number for a popup. Also visible at end of unit. | Footnote numbers in text, with footnotes at end of unit. | Footnote numbers in text, with footnotes at end of unit. |
| Full-screen button on images | Click button to display image fullscreen. | Not available | Click button to display image fullscreen. | NA | NA |
| Interactive OWID graphs | Click button to launch OWID interactive in place. | Click the link to open the interactive graph on the OWiD site in a web browser. | Click button to launch OWID interactive in place, if your device is online. Not currently supported in the Windows app, where button launches interactive in a web browser. | Click short URL in sidebar to open interactive on the OWID site. | Use the short URL in the sidebar to open interactive on the OWID site. |
| Languages | Switch instantly between multiple languages, as listed on core-econ.org/the-economy | One epub per language. | One app per language. | Most languages available as a screen PDF. | Some languages available in print editions. |
| Dark mode | Switch between modes from Contents dropdown. | Provided automatically by some ereader apps; not built into the ebook itself. | Switch between modes from Contents dropdown. | NA | NA |
| Theme filters | Click the ≡ filter button beside themes on chapter pages to show only relevant content. | Not available | Click the ≡ filter button beside themes on chapter pages to show only relevant content. | NA | NA |
| Deep links to headings | Click the ‘Link’ button on a heading to get that heading’s URL in the address bar. | NA | NA | NA | NA |
| Expandable boxes
(Only used in some books, e.g. Walkthrough boxes in Doing Economics) |
Click + to expand. | Boxes are always open and visible. | Click + to expand. | NA | NA |
| Index
(Back-of-the-book topic list. Available in some books, e.g. The Economy) |
Topics accessible by clicking numbered links. | Topics accessible by clicking numbered links. | Topics accessible by clicking numbered links. | Topics listed with clickable page numbers. | Topics listed with page numbers. |
| Bookmarking | Click or drag on text to create a bookmark. | Supported automatically by some ereader apps, not built into ebook. | Click or drag on text to create a bookmark. | Supported automatically by some PDF apps, not built into ebook. | Your nearest physical bookmark. |
| Bookmark notes | Coming soon. | Supported automatically by some ereader apps, not built into ebook. | Not yet available. | Supported automatically by some PDF apps, not built into ebook. | NA |
