Markdown Viewer – Open Online, No Install
Read .md files as rendered text or raw source. Files are processed only in this browser and are never uploaded.
How it works
- 01Drop a fileDrag and drop it, or use the choose-file button.
- 02The format is detectedWe read the extension and take you to the right viewer.
- 03It opens in your browserNothing goes through a server, and the file is not stored.
Scope and limits
- Common Markdown (GFM) syntax is supported: tables, lists, task lists and code blocks. Math and diagrams (Mermaid) are not rendered and appear as source.
- HTML inside documents is sanitized; scripts and styles are removed.
- Only https and mail links are clickable. Images with external or relative paths are not loaded and show their alt text instead.
- Non-UTF-8 Korean legacy encodings (EUC-KR) are detected automatically. Files over 20 MB are not opened.
- Click a search result to jump to it; matches are highlighted in the text.
FAQ
Is my Markdown file uploaded?
No. Everything stays in this browser.
Why are images missing?
To protect your privacy, images from external addresses are not loaded. Only images embedded in the file as base64 (data:) are shown.
Are math and diagrams supported?
Not yet. Those parts appear as source text.