JS Beautifier / Minifier
Format JavaScript with two spaces, four spaces or tabs, or prepare a smaller release copy with selectable comment, blank-line and console options.
Keep the readable source beside the release copy
A JS Beautifier expands compact blocks and statements with the indentation you choose. A JS Minifier serves a different purpose: it reduces selected comments, blank lines and horizontal spacing without renaming variables or rewriting expressions.
A JS Formatter is useful when reviewing a bundle, comparing two builds or tracing a short function from an error report. Two spaces, four spaces and tabs are available; quote conversion applies only to actual string literals.
Minification still needs a test run
The JavaScript minify step keeps existing line breaks between statements. That protects code which relies on automatic semicolon insertion, including a newline after return. Regular expressions and nested template literals are held apart from spacing changes.
The JS Minify option for console calls replaces a call used inside an expression with void 0. Its arguments may still contain side effects that disappear, so enable that option only when your tests cover the change.
Clearing “preserve string literals” merely allows the shorter equivalent quote style. Processing happens in the page's browser code, but credentials, private keys and production secrets should not be pasted into browser-based utilities.
Frequently Asked Questions About the JS Beautifier / Minifier
JavaScript is a programming language used for interactive web pages and many applications outside the browser. Formatting makes its source easier to read; minification does not explain or validate what the program does.
No. Run it in a development or staging environment first. Removing comments or console calls can affect behavior, so keep the source copy and replace it only after the relevant tests pass.
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