Markdown Viewer Premium, developed by BumKom, converts raw Markdown into rendered, interactive documents inside Chrome. It transforms plain-text files into styled HTML pages with navigable structure and export options for PDF and Word, preserving tables and code blocks. The extension presents a glassmorphism visual theme, an auto-generated table of contents, an image lightbox, and dark/light modes that follow system appearance. It targets developers, technical writers, students, and data scientists who work with documentation across browser and editor contexts.

Its scope includes many Markdown dialects and export workflows

The extension reads GitHub Flavored Markdown, including tables and task lists, and extends support to specialized syntaxes such as MDX, Jira markup, Confluence markup, and Nulab Backlog. The tool also recognizes standalone diagram files and backlog exports. For sharing and publication it provides one-click export to PDF and Microsoft Word (DOCX), which preserves layout and code blocks for downstream editing or distribution.

Rendering performance and developer-oriented code support are strong

The rendering engine is designed for speed, capable of loading documents with dozens of diagrams in seconds, and it includes native Mermaid diagram rendering and KaTeX math output. Code presentation covers syntax highlighting for more than 100 languages and selectable code themes, which helps keep samples readable when pages include long code sections or many embedded visuals.

Processing is local-first and the extension runs across editors and browsers

Parsing and rendering occur on the user's machine, so documents are not sent to external servers. The extension is available for Chrome and other Chromium-based browsers, and it is also offered as a VS Code extension and a standalone desktop application. To view local files in the browser, enable the extension's "Allow access to file URLs" option from chrome://extensions/ → Details.

A maintained, design-focused choice for documentation professionals

The developer maintains distribution across the Chrome Web Store, the VS Code Marketplace, and GitHub, and the extension is generally well-received for its modern design and feature set. That combination makes it a practical choice for technical users who need publication-quality previews and editor integration; readers who only require minimal, plain previews may find the feature depth unnecessary.