What does the GraphQL, Vue, Angular, SCSS, Less, Flow, LWC, and Glimmer Formatter do?
Use this tool when you need a browser utility that formats several web-language syntaxes with the matching Prettier parser. It accepts one supported source file or fragment and returns consistently formatted source code. Results are deterministic for the same input except where cryptographic randomness, current time, or a live provider response is part of the task.
Formatting is the first verification layer
Use this page for consistent presentation and parse-level feedback. Use the project toolchain for semantic validation and deployable output.
How do you use it?
- Select the source language and paste or open code.
- Set the preferred print width.
- Format with the corresponding Prettier parser, then copy or download the source.
Worked example
Format a GraphQL query
Input
query User($id:ID!){user(id:$id){id name}}Output
query User($id: ID!) {
user(id: $id) {
id
name
}
}The GraphQL parser preserves query meaning while applying stable whitespace.
Common errors and fixes
| Symptom | Likely cause | Fix |
|---|---|---|
| The selected parser reports a syntax error. | The source is incomplete or the selected language does not match the file. | Select the correct syntax and repair the parser location. |
| Formatted code still fails the build. | Formatting does not perform project resolution, type checking, or framework compilation. | Run the project compiler, linter, and tests after formatting. |
Important behavior of Web Code Formatter
Formatting proves that the selected parser accepted the text; it does not compile, type-check, lint, or execute the project.
Standards and implementation references
- Prettier documentation (opens in a new tab)Documents supported languages and formatting behavior.
- Prettier browser API (opens in a new tab)Documents standalone formatting with explicit parser plugins.
Frequently asked questions about Web Code Formatter
Does the Web Code Formatter upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the Web Code Formatter accept?
It accepts one supported source file or fragment. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the Web Code Formatter produce?
It produces consistently formatted source code. Copy and download controls appear when the output format supports them.
What limitation should I know?
Formatting proves that the selected parser accepted the text; it does not compile, type-check, lint, or execute the project.
What changed?
Added Eight web syntaxes, Prettier parsers, Configurable print width, Local source formatting, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.