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Java Formatter

Format Java source with consistent brace placement and indentation. Free, private and instant — nothing is uploaded.

100% client side No upload No size limit Works offline
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About this tool

Format Java source with consistent brace placement and indentation. The formatter is token-aware: strings, template literals, regular expressions and comments are recognised and never reformatted internally, which is where naive formatters corrupt code.

When you would use it

  • Reading minified or bundled source while debugging
  • Normalising indentation in a file that has been edited by several tools
  • Making an unfamiliar snippet readable before working with it

Worked example

Minified
function f(x){if(x>1){return x/2}else{return x*2}}
Formatted
function f(x) {
  if (x > 1) {
    return x / 2
  } else {
    return x * 2
  }
}

Things worth knowing

  • Regular expression literals are distinguished from division, so a / b and /ab+c/g are both handled correctly.
  • Template literals — including nested ${...} expressions — are preserved exactly.
  • This reformats rather than rewrites: no code is removed, reordered or transformed.
Questions

Frequently asked

Does this change my code?
Only whitespace. No statements are rewritten, reordered or removed — it is a reformatter, not a transpiler or a linter.
Can it handle minified bundles?
Yes. Reformatting a bundle makes it readable, though minified code has already lost its original variable names — those cannot be recovered.
Is my data uploaded anywhere?
No. Every tool on JSONWorks runs entirely in your browser using JavaScript. Your input is never sent to a server, never logged and never stored. The simplest proof is to disconnect from the internet — the tools keep working. The site does load Google Fonts and a Google Analytics page-view tag, so you will see those two requests in your network tab, but neither receives anything you type or paste.
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