A Web Browser can be used to read eBooks. It automatically provides a GUI interface for the user.
 Browser eBook features
A browser tends to treat each page individually and scrolls through the page. As an eBook reader it lacks some features such as bookmarking your location and the ability to read books in eBook formats other than direct HTML. There are some browsers addons to fix these problems and others. Browsers can also read eBook files coded in wiki formats because the wiki server converts pages on the fly. Many of this would now be classed as Progressive Web Apps.
- ePUB - Firefox and SeaMonkey can use EPUBReader. Firefox is built into Firefox OS.
- Waterfox is a 64bit version of Firefox. It should support what Firefox supports.
- eBooks.com has a feature called eb20 (eBook 2.0) which is a format for eBooks that can be read in a browser.
- Lucifox is an ePUB Reader that is an extension for Firefox.
- Opera addons can read and downloading EPUB books with support of ePUB format.
- Chrome browser features HTML5 support and is built into Chrome OS.
- Chromium Browser Open source equivalent to Chrome browser.
- AZARDI has an online version that will work with browsers. It is built on Firefox Mozilla code and Firefox OS.
- HTTrack can download a full web site for offline browsing and reading.
- Monocle can turn any browser into an eBook reader.
- Wallabag can capture a web site for offline reading. It is free.
- Microsoft Edge new version can read PDF and ePUB.
- WordSearch Bible web app can display WordSearch Bible and LifeWay Books.
 Character set
Browsers also need to be told which character set the file is using. This is normally done in the header section with a line like:
- <meta content="text/html; charset=iso-8859-1"/>
- <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
- <meta content="http://www.w3.org/1999/xhtml; charset=utf-8" http-equiv="Content-Type"/>
To avoid confusing the browser only one such line should appear. Some browsers have settings that can override this entry.
 EBook Devices
Dedicated eBook Devices typically do not have a full browser capability however some do provide browsers.
- Amazon Kindle - has a limited custom browser
- iRex iLiad Web Browsers - these are addons
- Onyx eBook readers use Android for their OS and can Browsers.
- PocketBook eBook readers include an improved version of the Midori Browser.
- Others with WiFi may only provide access to their book store.
 Mobile Devices
Smartphones generally require a browser for data plans. They will typically include one but it may be a stripped down version. Here are a list of replacements.
- Opera Mini and Opera Mobile browsers
- Bitstream's BOLT for Blackberry
- Skyfire, from Skyfire Labs, works for Windows Mobile and Nokia S60 Third Edition phones
- Dolphin browser on Android
- Chrome browser on Android and iOS (iPhone and iPad)
Another popular mobile device is the Web Tablet. It too will have a built-in browser but will usually use an eBook app for reading eBooks.
 For more information
Downloads for all sorts of Web browsers - Includes reviews.