shouldiuse.io

VERDICT

Should I use js-beautify?

Beautify JavaScript, JSON, React.js, HTML, CSS, SCSS, and SASS - beautifier.io

Depends. Use it free for quick browser cleanup, CLI batch formatting, or unpacking packed scripts. For everyday team formatting, Prettier or your editor's built-in formatter is the better fit.

Confidence

Medium. Based on 14 public sources. Free open-source software, not a paid service — 'buy' signals don't apply.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support quality
  • Security postureNo vuln data; official security page 404s

Pricing

$0

Free

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes

Best for

  • Quick paste-in cleanup of minified code
  • Devs wanting CLI or Python formatting
  • Unpacking Dean Edwards-packed bookmarklets
  • Embedding a formatter library via CDN

Not for

  • Everyday formatting — Prettier and VS Code do it better
  • Teams wanting consistent, enforced code style
  • Anyone needing support, SLAs, or security guarantees
  • Non-developers — it is a dev tool, not a service

Gotchas - check before you buy

medium

Zero support: free software, no SLAs — fixes depend on volunteer maintainers

medium

Output differs from Prettier; adopting then switching means reformatting your whole codebase

medium

Dropped Python 2 and requires Node 22+, breaking older environments

low

is a 404; no visible security policy or commitments

Pros and cons

Pros

  • Completely free with no accounts, limits, or payments
  • Runs in browser,, or Python from the command line
  • Beautifies JS, JSON, React, HTML, CSS, SCSS, and SASS
  • Unpacks scripts packed by Dean Edwards' popular packer
  • Embeddable as a web library via free CDNs

Cons

  • Explicitly no uptime or support guarantees
  • Users report buggy, inconsistent results on some inputs
  • Failed to correctly format simple HTML in reported cases
  • An older release broke dependency installs for many projects
  • v2.0.1 requires Node 22+ minimum

Sources & method

Analyzed 9/26/2026 - 12 sources - No known vulnerabilities found in the sources reviewed.

official x5review x5security x2

Key stats

  • Value for money: 5/5

    Rating

  • $0

    Starting price

  • 12

    Sources

  • Analyzed

  • Value for money: 5/5. Free and open source, zero cost
  • Ease of use: 4/5. Paste-and-format web tool, simple CLI
  • Feature depth: 3/5. Seven languages plus packer unpacking; less configurable than Prettier
  • Support quality: 1/5. Explicitly no uptime or support guarantees
  • Security posture. No vuln data; official security page 404s
  • $0 Price Free open-source tool
  • 7 Formats supported JS, JSON, React, HTML, CSS, SCSS, SASS
  • v2.0.1 Version on page v2.0.3 listed on cdnjs
  • v22.x Min Node.js per v2.0.1 changelog

Pricing

Free

$0

  • Browser tool plus Node.js and Python CLI
  • Open-source library via npm and CDNs

Security

No known vulnerabilities found in the sources reviewed.

What users say

Hobbyist developers like it for quick cleanup, but many now steer toward Prettier and VS Code for everyday formatting.

“I was disappointed by the javascript beautifiers available, 10/10.”
Reddit, r/javascript
“Vscode does that well! I highly recommend prettier, it's supported well in vscode and easy to customize!”
Reddit, r/javascript
“They show different results, but they always don't satisfy my need. Sometimes they fail, sometimes buggy, sometimes too heavy and slow.”
Reddit, r/javascript
Full analysis

Based on 14 public sources. Free open-source software, not a paid service — 'buy' signals don't apply.

Free, no-strings code beautifier for quick cleanup and CLI use; for daily formatting, Prettier or VS Code wins.

Methodology

Based on 14 public sources. Free open-source software, not a paid service — 'buy' signals don't apply.

Sources

  1. Online JavaScript beautifier (official site)beautifier.io
    official
  2. JS Beautifier on GitHubgithub.com
    official
  3. js-beautify on npmnpmjs.com
    official
  4. js-beautify on Yarn (changelog, support terms)classic.yarnpkg.com
    official
  5. js-beautify on cdnjscdnjs.com
    official
  6. Reddit: I can't find a reliable JS formatterreddit.com
    review
  7. Reddit: Excellent Javascript Beautifierreddit.com
    review
  8. Reddit: AskJS — online beautify tools vs Prettierreddit.com
    review
  9. Stack Overflow: js-beautify isn't correctly formatting simple htmlstackoverflow.com
    review
  10. Reddit: JS-beautify broke the internetreddit.com
    review
  11. Snyk: js-beautify vulnerability pagesecurity.snyk.io
    security
  12. beautifier.io/security (404)beautifier.io
    security

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