Nifty Format on Save

Control format on save: a status bar toggle, folders and files that are never formatted, time limits, and save chains like organize imports, ESLint fix, then format.

Maintained. No sign-in. No telemetry. Works in VS Code, Cursor, Windsurf, VSCodium and other editors that use Open VSX.

Features

• One save, several steps, in the order you want. For each language, list what happens on save: organizeImports, any code action such as source.fixAll.eslint or source.fixAll.stylelint, format, or command:<id>. VS Code's own settings can't guarantee that ESLint fixes run before Prettier formats; this can.
• Leave some files alone. Generated code, vendored libraries, minified files and lock files are never formatted on save, and you can add your own globs or right-click a file and choose Never Format This File.
• Pause it with one click. The status bar toggle turns format on save off for this workspace only, for when you're editing someone else's code and don't want a 2,000-line diff. Save Without Formatting (Ctrl+K Ctrl+Shift+S) saves just once without it.
• Saving never hangs. Each step has a time limit (3 seconds by default); a slow formatter is skipped with a note instead of freezing the save.
• Big files are skipped (over 1 MB by default).
• What happened? What Happened on the Last Save? tells you which steps ran and how long they took, or why the file was skipped.
• Works in the browser on vscode.dev and github.dev.

Example

// settings.json
"editor.formatOnSave": false, // Nifty Format on Save takes over
"nifty.format-on-save.chains": {
  "typescript": ["organizeImports", "source.fixAll.eslint", "format"],
  "python": ["source.organizeImports", "format"],
  "*": ["format"]
},
"nifty.format-on-save.exclude": ["**/generated/**", "legacy/**"]

Commands

Settings

Turn off VS Code's editor.formatOnSave (you'll be offered this once) so files aren't formatted twice.

Install

• VS Code: search for "Nifty Format on Save" in the Extensions view, or install from the Visual Studio Marketplace.
• Cursor, Windsurf, VSCodium, Kiro, Antigravity: install from Open VSX.

Privacy

This extension collects no telemetry and needs no account.

More Nifty tools

• Nifty Beautify: Format HTML in PHP, Blade & Twig: Format HTML inside PHP, Blade, Twig, Jinja, Handlebars, ERB and Liquid templates without breaking the template tags. (Open VSX)
• Nifty SQL: SQL Formatter for 20 Dialects: Format SQL in 20 dialects, including dbt and Jinja templates, with your team's settings. (Open VSX)
• Nifty YAML: Formatter, Validator & Converter: Format YAML without losing comments (Kubernetes-style indents), sort keys, lint with yamllint, copy the key path, and convert to and from JSON. (Open VSX)
• Nifty JSON: Formatter, Validator & JSONPath: Format, minify, sort keys, query with JSONPath, copy paths, generate TypeScript types, and browse huge JSON files in a fast tree view. (Open VSX)
• Nifty Pretty Errors: Readable Error Messages: Readable error messages for every language: TypeScript types formatted as code, long C++ and Rust types folded, and a docs link for every error code, in the hover and a side panel. (Open VSX)
• Nifty Problems: Project-Wide TypeScript Errors: See TypeScript and ESLint errors for your whole project in the Problems panel, not just open files. (Open VSX)

See all 35 Nifty tools at https://getnifty.dev