Convert English letters, numbers, punctuation, and spaces to half-width or full-width
ASCII letters, numbers, punctuation, and spaces are normalized. Other characters stay unchanged.
Related · Text
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Character Counter
Count characters, lines, paragraphs, and UTF-8 bytes locally
YAML <-> JSON
Convert between YAML and JSON locally
Diff Viewer
Compare two texts line by line with unified or side-by-side views, locally in your browser.
Markdown Editor
Write Markdown with live preview, auto-saved to your browser, and export it as a standalone HTML file.
Markdown Table Builder
Build Markdown tables visually with editable cells, column alignment, live preview, and copy-ready output
JSON Formatter
Prettify, minify, and validate JSON with clear parse errors