List of the Top 5 WYSIWYG Editors for Opera in 2025

Trumbowyg stands out as a lightweight and customizable jQuery plugin, boasting an attractive design while producing clean, semantic code through its powerful API. This plugin is optimized for HTML5 and works seamlessly with modern browsers like IE9+, Chrome, Opera, and Firefox. Unlike many WYSIWYG editors that surpass 45kB, Trumbowyg remains compact at just 20kB, which contributes to faster page loading times. It incorporates only essential functionalities, ensuring that the generated code is tidy and tailored to user preferences. Users can enjoy complete flexibility in customizing options and designs; the default layout is particularly optimized for Retina displays, guaranteeing a straightforward and high-quality user experience. Moreover, Trumbowyg allows for the creation of custom plugins, which developers can contribute through pull requests on its GitHub repository, in addition to the option of developing unique packages or using available ones. A comprehensive directory of known packages for Trumbowyg is accessible to users, further enhancing its utility. Being an open-source project licensed under MIT, Trumbowyg is completely free to use, which makes it an appealing choice for developers around the world. This blend of essential features and adaptability solidifies Trumbowyg as an excellent option for those in search of an efficient and powerful text editing solution, especially for projects that prioritize both performance and user experience.

Summernote is a highly accessible WYSIWYG editor that operates on Bootstrap, enabling easy installation by simply downloading and linking the necessary JavaScript and CSS files along with Bootstrap itself. Users can customize their experience by initializing a range of options and modules, thereby experiencing all the practical functionalities that Summernote has to offer. This editor is licensed under the MIT license and is actively supported by the community, ensuring compatibility with multiple back-end frameworks. Additionally, there are third-party integrations for popular platforms like Django, Rails, and Angular, enhancing its versatility. Summernote supports Bootstrap from versions 3.x.x to 4.x.x and is impressively lightweight, with the total size of the JavaScript and CSS files being around 100KB. It provides an intuitive user interface and functions well across all major browsers, such as Safari, Chrome, Firefox, Opera, Edge, and Internet Explorer 9 and above. Furthermore, it operates seamlessly on all major operating systems, including Windows, MacOS, and Linux. To quickly launch Summernote, users can download its precompiled and minified CSS and JavaScript files, while also noting that Bootstrap requires specific HTML elements and CSS properties, making an HTML5 doctype essential for optimal operation. The editor's adaptability further allows developers to tailor it to meet diverse project needs, ensuring a broad range of applications. This flexibility makes Summernote a popular choice for both novice and experienced developers looking to implement a powerful text editing solution.

Mercury serves as an all-encompassing HTML5 editing solution tailored to enhance your team's content creation journey within modern web browsers. Built from the ground up, this tool is offered as a Rails Engine for simple integration via your Gemfile, or you have the option to download the full package if you prefer not to use Rails. It preserves the authenticity of your production pages by refraining from injecting any JavaScript or CSS, thus allowing you to utilize various frameworks without the risk of conflicts. Customization is a breeze, as you can easily modify the toolbar by adding or removing elements, or even design entirely new tools that align with your specific requirements. Each element of the toolbar can be connected to particular actions through behaviors and the command pattern, which significantly boosts its functionality. Mercury effortlessly accommodates a range of content types right out of the box, including Full HTML, Simple, Markdown, Snippet, and Image regions, while also offering the ability to extend its foundational regions for custom type creation. It is built on the advanced capabilities of HTML5 contentEditable, ensuring compatibility with all modern HTML5 elements, syntax, and JavaScript APIs, which positions it as a powerful option for developers eager to optimize their content editing workflows. The adaptability and extensibility of Mercury not only elevate web content management but also empower teams to collaborate more effectively and efficiently. By embracing this innovative tool, organizations can truly transform their approach to digital content creation.

Popline is an intuitive WYSIWYG editor that activates when text is selected on the webpage, taking cues from PopClip. It is preloaded with essential editing features and provides options for easy customization and enhancements. Users can seamlessly toggle between edit mode and view mode, as well as switch between fixed or relative popup placements. It supports major web browsers such as Chrome, Safari, Firefox, Opera 15.0+, and IE 8+. The default theme is elegantly crafted by @Pepsin. In View Mode, users can engage with content by sharing via Twitter, messaging on Facebook, pinning images to Pinterest, or conducting Google searches. Popline can display either at the top of the selected paragraph, reminiscent of Medium, or right at the cursor's position. Furthermore, users have the capability to enable, disable, or rearrange plugins at the time of Popline's initialization, which allows for a customized editing experience. This adaptability positions Popline as an essential tool for anyone in need of effective text editing solutions while ensuring user satisfaction and flexibility. As such, it stands out in the crowded market of editing tools.

Sir Trevor transforms the landscape of web content editing by offering an innovative interface that prioritizes user-friendliness without making assumptions about content display. It structures content in a JSON format with minimal inline HTML, facilitating an easy and customizable approach to creating various block types. This intuitive platform empowers users to generate rich content effortlessly, having been effectively utilized on a national news broadcasting site with millions of viewers. The content organization revolves around blocks, which come with a variety of pre-loaded options, while users can also create and integrate their own custom blocks as necessary. Furthermore, a wide-ranging repository of blocks is accessible for users desiring additional choices, and the custom block creation process is designed to be simple. Sir Trevor is equipped with ECMAScript 6 shims by default, although users might need to add their own shims for environments lacking ECMAScript 5 API support. Leveraging The Guardian's Scribe for rich text editing, Sir Trevor is also built for compatibility with modern web browsers, explicitly supporting Chrome versions 51 and newer, Safari versions 9 and newer, and Firefox versions 47 and newer, which enhances its accessibility. This makes Sir Trevor not only a robust tool for creating dynamic web content but also a versatile solution that meets the diverse needs of content creators across various platforms.