E-Journal is an all-electronic, peer-reviewed periodical in a specific field or in a general field of interest which can be electronically accessed and are available over the internet. In the E-Journal environment the creation, transmission, storage, interpretation, alteration and replication of electronic "text" including "display" takes place in electronic form. Some electronic journals are online-only journals; some are online versions of printed journals, and some consist of the online equivalent of a printed journal, but with additional online-only material.

Some journals are subscription-based, or allow pay-per-view access. An increasing number of journals are now available as open access journals, requiring no subscription. Most working paper archives and articles on personal homepages are free, as are collections in Institutional repositories and Subject repositories. Most electronic journals are published both in HTML and Portable Document Format (PDF) formats, but some are available in only one of the two. Some e-journals are available over the internet while some others are distributed on CD-ROMs, or by way of e-mail.

The articles in e-journals are electronically submitted which help in the rapid publication of an issue and it provide innovative ways of representing research results and other form of data, information, text, motion, sound, hypertext, hypermedia linkages. The files or articles of an E-journal are electronically accessed using different technologies such as www, gopher, FTP, Telnet, etc. And has the ability to link reader comment and evaluation to published articles. E-journals help in more efficient dissemination of information, rapid Selective Dissemination of Information (SDI) services by libraries through Email and lower cost per successful match between articles and reader.