Opera Dragonfly is a
web development tool that was integrated into the
Opera web browser from Opera versions 9.5 through 12.18, similar to
Firebug and development tools built into
Mozilla Firefox and
Google Chrome.
It supports debugging
JavaScript
JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of websites use JavaScript on the client side for webpage behavior, of ...
, viewing the
DOM, monitoring network traffic, previewing resources, editing colors, etc. It also supports remote debugging, which allows using the features of Dragonfly to be used when debugging a mobile phone, TV, or another desktop computer.
Opera Dragonfly must be downloaded on first usage, and functions offline thereafter. Opera Dragonfly automatically updates to the latest version available, when connected to the Internet.
Opera Dragonfly is compatible with Presto 2.1 and later, specifically
Opera Mobile 9.5 and above, Opera Desktop 9.5 and above, and
Nintendo DS &
Nintendo DSi
The is a dual-screen handheld game console released by Nintendo. The console launched in Japan on November 1, 2008, and worldwide beginning in April 2009. It is the third iteration of the Nintendo DS, and its primary market rival is Sony's ...
Browser.
The Scope transport protocol (STP) is used for communication between the Opera browser and Opera Dragonfly.
History
Development of Opera Dragonfly started in May 2008. When the development started Opera Dragonfly was using the
BSD license
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is in contrast to copyleft licenses, which have share-alike requirements. The original BSD lice ...
, but later on it was changed to the
Apache License 2.0.
On 21 September 2011, the Opera Dragonfly team announced that from then on releases would be more focused on improvements to individual components, e.g. the DOM inspector or the UI framework. As soon as a feature for a certain component was implemented, it would be put on the experimental path for some initial testing. As part of the new release strategy, they switched over Opera Dragonfly to a new version scheme:
.
Inclusion of Opera Dragonfly ended after Opera 12.x, when Opera switched from the
Presto layout engine to
Blink and a
Chromium base. Subsequent versions included Chromium's DevTools instead. As of 2019, Dragonfly has not been reintroduced, although in 2013, indication was given that it might at some point return.
See also
*
Web development tools
*
Internet Explorer Developer Toolbar
*
Firebug (web development)
Firebug is a discontinued free and open-source web browser extension for Mozilla Firefox that facilitated the live debugging, editing, and monitoring of any website's CSS, HTML, DOM, XHR, and JavaScript.
History
Firebug was licensed under the BS ...
References
{{JavaScript
Opera Software
Web development software