Click the example buttons or drag a .md file
Click the example buttons or drag a .md file
Online Markdown editor with live preview. Write and preview Markdown in real-time with split-pane view. Supports headings, bold, italic, links, images, code blocks, tables, lists, and GitHub Flavored Markdown. Features include view mode toggle (edit/preview/split), one-click copy HTML, download as .md or .html, drag-and-drop file upload, toolbar shortcuts, and word/character count. All rendering happens locally in your browser using the marked library — no data is sent to any server.
HTML entity encoder and decoder. Encode special characters (< > & " ') to HTML entities or decode entities back to readable text. Prevents XSS attacks and broken markup when displaying user-generated content or code snippets. Supports named entities, decimal (&), and hex (&) numeric references. Features include encode-all-non-ASCII option, drag-and-drop file upload, one-click copy, and download results as text files. All processing runs locally in your browser — your data never leaves your device.
JSON formatter, validator, and beautifier. Format, minify, pretty-print, and syntax-highlight JSON data instantly. Features include key sorting, custom indentation (2/4 spaces or tab), line numbers, tree view, error highlighting with line/column position, drag-and-drop file upload, one-click copy/download. All processing runs locally in your browser — no server uploads.
Base64 encoder and decoder. Encode text to Base64 or decode Base64 back to readable text with real-time auto-detection. Supports UTF-8 characters including emojis, Chinese, and other non-Latin scripts. Features include drag-and-drop file upload, one-click copy, and download results as text files. All processing runs locally in your browser — your data never leaves your device.