Code Beautifier
Beautify JS, TS, JSX, TSX, JSON, CSS, SCSS, Less, HTML, Vue, Markdown, YAML, XML, SVG, GraphQL, and SQL
Format messy code into readable structure
Pretty-prints your source with consistent indentation and wrapping. Everything runs locally in your browser — nothing is uploaded. For languages that are not supported yet, see the FAQ below.
Prettier (Babel) — opinionated JS formatting.
Frequently asked questions
Common questions about the Code Beautifier.
What does the Code Beautifier do?
It pretty-prints source with production-grade formatters that run entirely in your browser. Prettier handles most web languages; sql-formatter handles SQL. Nothing is uploaded to ToolsArk servers.
Which languages are supported?
JavaScript, TypeScript, JSX, TSX, JSON, CSS, SCSS, Less, HTML, Vue, Markdown, YAML, XML, SVG, GraphQL, and SQL. Engines load on demand so unused languages do not inflate the first page load.
Which languages are intentionally not supported?
Python, Go, Rust, C/C++/C#/Java, Dart, PHP, Ruby, Shell, Kotlin, and Swift are omitted in v1. Reliable browser ports need large WASM toolchains (or do not exist yet). We document the gap instead of shipping partial formatters.
Which formatter libraries does ToolsArk use?
Prettier standalone with official language plugins, the official @prettier/plugin-xml for XML/SVG, and sql-formatter for SQL. All run client-side with no external API calls.
Does my code leave my device?
No. Formatting happens locally in your browser. ToolsArk does not receive your source for beautifying.
Why did formatting fail?
Usually the input has a syntax error the selected parser cannot accept. Fix the reported error, confirm the language matches the code, and try again.
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