Supported File Types

viewmd classifies files into categories for rendering. Files not recognized as text are treated as binary and shown with a download link.

Markdown

Rendered as full HTML with styled typography.

Extension
.md
.markdown

Text / Code

Displayed with syntax highlighting in a monospace font.

By Extension

.txt, .log, .json, .xml, .yaml, .yml, .toml, .ini, .cfg, .conf, .sh, .bash, .zsh, .fish, .py, .js, .ts, .jsx, .tsx, .java, .c, .cpp, .h, .hpp, .cs, .go, .rs, .rb, .php, .swift, .kt, .sql, .html, .css, .scss, .sass, .less, .vue, .svelte, .r, .m, .scala, .pl, .lua, .vim, .el, .clj, .ex, .exs, .dockerfile, .env, .gitignore, .gitattributes, .editorconfig, .eslintrc, .prettierrc, .babelrc

By Filename

These filenames are recognized regardless of extension (case-insensitive):

Makefile, Dockerfile, Gemfile, Rakefile, Procfile, Jenkinsfile, LICENSE, README, CHANGELOG, AUTHORS, CONTRIBUTORS, CODEOWNERS

Auto-Detection

Files with unrecognized extensions are probed for UTF-8 validity (first 8 KB). Valid UTF-8 files are rendered as plain text; invalid files are treated as binary.

Binary / Unsupported

Files that can't be previewed show a "No preview available" page with a download link. Append ?raw=1 to any file URL to download it directly.