HTML Validation

Document Validation

The HTML validator presents the errors in the editor similar to any XML documents. It also checks the embedded CSS content and the warnings and errors are presented similar to the CSS editor.

Showing Validation Errors

Validation errors and warnings in HTML documents are marked in the main editing pane, in the vertical stripe on the right side of the editor, and in the Outline view. Colors help indicate the severity of the issue and details are presented in a pop-up window when hovering over an issue and in the stripe at the bottom of the editor.

Batch Validate HTML5 Project

An action is available in the Project view that provides the ability to validate multiple files attached to a project at once (HTML5 files, as well as CSS and JavaScript files).

What's New in
Oxygen XML Editor 27.1

March 24, 2025

Oxygen XML Editor version 27.1 expands upon the powerful features introduced in previous releases, including advanced AI actions, and AI-enabled XProc pipelines, integration with DITA-OT 4.3.0 and upgrades to the Git Client add-on.

Learn more

What's New in
Oxygen JSON Editor 27.1

March 24, 2025

Oxygen JSON Editor version 27.1 received a series of AI-based improvements and accelerates JSON document creation by automatically inserting required schema-defined structures when using the Author editing mode.

Learn more