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Oxygen XML Editor 28 is Now Available!

November 27, 2025

Submitted by Alin Belu.

Syncro Soft is proud to announce the immediate availability of version 28 of the industry-leading Oxygen XML Editor, along with the following Oxygen suite of products: XML Author, XML Developer, PDF Chemistry, XML WebHelp, XML Publishing Engine, XML Scripting, and JSON Editor.

This major release introduces new AI-driven capabilities via Oxygen AI Positron 8.0, along with extensive feature enhancements and updates to support the latest standards, platforms, and best practices in authoring, publishing, and development workflows.

What’s New in Oxygen XML Editor 28

• Unified Oxygen AI Positron Add-on: The previous Assistant and Assistant Enterprise add-ons are merged into a single add-on, giving all users access to advanced AI features (including Model Context Protocol support), and allowing Enterprise setups to connect to both custom AI providers and the Oxygen AI Positron Service in one place. For users working with Eclipse, the Oxygen AI Positron for Eclipse plugin is now available. This plugin brings AI functionality directly to developers and extends support to multiple editor types within the Eclipse platform.

• Project-Aware AI: A new "Generate agent instructions" action creates context prompts that capture your project’s style and structure, automatically guiding further AI responses. Saved Memories store rules and preferences so that the AI can remember them across sessions.

• Agentic Chat Modes: The revised Chat view offers multiple conversation modes (Agent, DITA Agent, Ask), automatically tapping into the current project or document as context. In-chat provided tools (search in project, find using regular expressions, list directories, apply refactoring operations, edit documents) allow the AI to explore and refactor your content under your direction.

• Model Context Protocol Integration: Oxygen AI Positron can now connect to Model Context Protocol (MCP) servers, loading tools defined in MCP configuration files so they can be invoked from chat and custom AI actions. This enables AI-powered workflows to call external tools in a controlled way.

• AI-Driven File Creation and Autocompletion: Create new files by providing prompts, letting AI Positron generate content that you can refine before saving. AI Autocompletion offers real-time context-aware suggestions for code and markup, inside XSLT, XSD, JSON Schema, Schematron, and more.

• AI Validation and Correction: Content inserted by AI is automatically validated, with AI corrections applied if errors are found. Preferences enable fine-grained control over whether entire documents or only inserted fragments are validated and corrected.

• Expanded AI Model Support: Connectors for Anthropic Claude, Google Gemini, Google Vertex AI, AWS Bedrock, and xAI Grok are now available alongside the Open AI and Azure Open AI Service connectors and the multi-connection support allows flexibility in choosing the best model for your current task. The Microsoft Azure OpenAI connector supports OAuth 2.0 and simplified configuration. The latest advanced models are supported, such as OpenAI GPT-4.1, GPT-5, GPT-5.1 (including GPT-5.1 Thinking), Anthropic Claude 4.5 models, and more.

• DITA Enhancements: A new DITA Maps Manager welcome screen helps users quickly create or open maps and access recently used ones. A Quick Find filter in the DITA Maps Manager allows users to search and filter referenced topics, limit searches to titles, or show results as a flat list. When opening maps with resolved topics, references to DITA-compatible resources (such as Markdown documents) are now expanded and displayed as DITA XML in the editor, so users can preview converted content before publishing.

• Publishing and WebHelp: The publishing support gains a series of quality-of-life improvements, such as showing publishing progress in the status bar, sticky table headers, light/dark/auto theme switcher, full-screen mode, and auto-saving of expanded/collapsed TOC states. New publishing parameters make it possible to compress PDFs, merge additional PDFs, and generate separate PDFs for each chapter or part. AI-friendly output generates an 'llms.txt' file and companion Markdown files, offering LLMs a simplified view of the content.

• XSLT/XQuery and XProc Upgrades: Updated Saxon (12.9) for transformations and debugging, better text value template editing in XSLT, new refactoring support for parameter renames, direct JSON-to-XML/ XML-to-JSON conversion from XPath functions, and official support for XProc 3.0/3.1 via XML Calabash 3.x.

• Comparison Tools and Productivity: Directory comparisons let you filter on folders to streamline results; HTML comparison reports now explain how the comparison was performed. A new Main Files feature warns about broken references when files or folders are deleted. Custom validation scenarios can be toggled from the Validation toolbar, and a Save Validation Report action exports an HTML listing of errors.

• Add-on Updates: Several add-ons have been updated, including the Git ClientFluenta DITA TranslationTerminology Checker, and JSON Schema Validator. A new experimental AI Translator add-on will be made generally available soon.

For the full list of features, see: https://www.oxygenxml.com/xml_editor/whats_new.html

What’s New in Oxygen XML Author 28

Oxygen XML Author 28 inherits the powerful new features and enhancements introduced in Oxygen XML Editor 28, offering a major update for DITA and XML content professionals, introducing extensive AI-driven authoring workflows through Oxygen AI Positron, with project-aware agentic chat, AI-driven topic creation and restructuring, and automatic validation and repair of AI-generated XML. DITA authors get smarter DITA map management and an improved publishing experience (welcome screen, quick filters, clearer progress, AI-friendly WebHelp), while everyday tasks like copying content as Markdown or XML, adding comments, and reviewing differences in comparison views are a bit smoother and more predictable.

For the full list of features, see: https://www.oxygenxml.com/xml_author/whats_new.html

What’s New in Oxygen XML Developer 28

Oxygen XML Developer 28 incorporates the major development-related new features and enhancements introduced in Oxygen XML Editor 28, providing cutting-edge AI-driven XSLT, XQuery, XProc, Schematron, and JSON functionalities. Developers get real-time AI Autocompletion and richer “Generate / Explain / Chat About Code” actions across more formats, along with upgraded Saxon engine, new JSON to XML extension functions, XProc 3.0/3.1 support, improved directory comparison, and new APIs and scripting hooks that make it easier to automate refactoring and integrate Oxygen into custom toolchains.

For the full list of features, see: https://www.oxygenxml.com/xml_developer.html

What’s New in Oxygen JSON Editor 28

Oxygen JSON Editor 28 brings Oxygen AI Positron 8.0 to JSON and JSON Schema–centric workflows, with project-aware Agent/Ask chat modes, AI-powered new file creation for JSON and JSON Schema, and automatic validation and repair to keep AI-generated JSON structures consistent. JSON developers gain faster and more accurate JSON Schema validation, clearer navigation in JSON arrays, and the same comparison, Git, and automation improvements available across the Oxygen 28 family.

For the full list of features, see: https://www.oxygenxml.com/json_editor/whats_new.html

What’s New in Oxygen PDF Chemistry 28

Oxygen PDF Chemistry 28 gives you more control over how PDFs are produced and delivered: you can compress output files for easier sharing, merge in additional PDFs before or after the generated content, and generate separate PDFs, for example for chapters or sections, directly from CSS.

For the full list of features, see: https://www.oxygenxml.com/pdf_chemistry.html

What’s New in Oxygen XML WebHelp 28

Oxygen XML WebHelp 28 delivers a modern reading experience, versatile display modes, and new accessibility features. It focuses on making published content easier to read and navigate, with sticky table headers, Light/Dark/Auto theming, full-screen and full-width views, persistent TOC state, and a series of small but meaningful accessibility improvements. Publishers also gain more control over structure and downstream reuse through ordered-list start indices, always-visible image map areas, and an optional AI-friendly mode that produces a simplified text/Markdown view of the content for LLMs.

For the full list of features, see: https://www.oxygenxml.com/webhelp/

What’s New in Oxygen XML Publishing Engine 28

Oxygen XML Publishing Engine 28 applies the new Oxygen XML WebHelp 28 features and PDF Chemistry 28 improvements to automated server-side and CI/CD-driven publishing pipelines.

For the full list of features, see: https://www.oxygenxml.com/publishing_engine/whats_new.html

What’s New in Oxygen XML Scripting 28

Oxygen XML Scripting 28 provides more powerful, fine-grained options for command-line or server-side operations. It makes automated comparison workflows a bit more transparent and easier to control: HTML comparison reports now include a collapsible meta section that shows exactly how each directory comparison was configured and run. In addition, a new Include Folders filter in the Compare Directories script lets you limit comparisons to only the folders you care about, so scripted jobs can focus on the relevant parts of large projects.

For the full list of features, see: https://www.oxygenxml.com/xml_scripting/whats_new.html

About Syncro Soft

Syncro Soft develops the industry-acclaimed Oxygen suite of products, facilitating teams in small businesses, Fortune 500 enterprises, universities, government agencies, and international organizations in authoring documents, publishing in different formats, collaborating with team members, and managing content.

The complete Oxygen product suite includes XML Author for user-friendly visual XML authoring, XML Web Author for in-browser intuitive editing and reviewing, the easy-to-use and flexible Content Fusion collaboration platform, many publishing tools such as PDF Chemistry for obtaining PDF using CSS styles, WebHelp for modern and responsive HTML5 output, the Oxygen Feedback flexible commenting platform, Oxygen Publishing Engine, and Oxygen Scripting for automating publishing, validation, and many other tasks. Customizing XML applications can be done using the XML Developer and the flagship product, Oxygen XML Editor, which provides an all-in-one comprehensive XML authoring, publishing, and development tool.

Oxygen is a registered trademark of Syncro Soft in the U.S. and other countries. Any other trademarks or service marks contained herein are the property of their respective owners.

SOURCE: Syncro Soft SRL

support@oxygenxml.com

https://www.oxygenxml.com


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