Alternatives to live‐preview.nvim

iamcco/markdown-preview.nvim

• Only supports markdown, but supports many kinds of diagraphs inside markdown files
• Requires Nodejs, but the plugin is compatible with both Neovim and Vim

barrett-ruth/live-server.nvim

• A very small Neovim plugin that supports previewing HTML (with css, js) files
• Requires Nodejs and live-server executable

tigion/nvim-asciidoc-preview

• A Neovim plugin that supports previewing AsciiDoc files
• Requires Nodejs, npm, asciidoctor command with the asciidoctor-diagram extension.

nmassardot/nvim-preview-svg

"This plugin was created for visualizing the SVGs embedded (as HTML) in ReactJS, VueJS or, really, in any file."