Summary

This AI code checker is a free, rules-based pre-check tool that runs entirely in your browser: paste a JavaScript, PHP, Python, or CSS snippet, choose the language, and get a 0-100 score built from nine deterministic checks (deep nesting, long functions, magic numbers, debug leftovers, TODO markers, repeated lines, plus two language-specific checks such as WordPress escaping for PHP or bare except clauses for Python). It is a heuristic pre-check, not an AI reviewer, and not a replacement for ESLint, PHPCS, or a human read before code from Pattern Forge, Elementor AI, or Divi AI ships to a client site.

AI Code Checker: Catch Issues Before They Ship

Paste code from Pattern Forge, Elementor AI, Divi AI, or your own scripts. This AI code checker runs a rules-based pre-check in your browser, with no server round trip and no account.

Draft a pattern

AI Code Checker

Paste a JavaScript, PHP, Python, or CSS snippet, pick the language, and get a rules-based pre-check score with specific callouts. Nothing leaves your browser.

Rules-based static pre-check · runs entirely in your browser

Pre-check score --

Paste code above, or load the example, to run the checks.

    How this works

    What the AI code checker actually looks for

    Nine deterministic checks

    Long lines, deep nesting, long functions, magic numbers, debug leftovers, TODO markers, and repeated lines run against your snippet with plain regex and counting, the same kind of heuristic a linter uses under the hood.

    Two checks per language

    JavaScript gets an async-without-try/catch check and a var-vs-let check. PHP gets an unescaped-output check and a missing-text-domain check. Python gets bare-except and mutable-default checks. CSS gets an important-overuse check and a hardcoded-color check.

    A score, not a verdict

    Each flag deducts points on a fixed, capped scale, so no single issue can tank the score alone. You get a 0-100 number plus the exact counts and lines behind it, not a black-box opinion.

    What a flagged snippet looks like

    Every flag points at a specific pattern, not a vague score

    Load the JavaScript example above and the checker returns 37 out of 100: a nesting depth of seven, two console.log() calls left in, one fetch() call with no try/catch nearby, and five var declarations where let or const would scope better. Load the PHP example and it comes back at 71, flagging two echo statements that print a variable without esc_html() or esc_attr(), plus a translation string missing its text domain. Those are the kind of details a quick glance at a diff misses, and a client site inherits.

    • JavaScript example: score 37, flags a nesting depth of 7 and two debug console.log() calls
    • PHP example: score 71, flags two unescaped echo() statements and a missing text domain
    • Python example: score 82, flags a bare except clause and a mutable default argument
    • CSS example: score 72, flags four !important declarations and three hardcoded hex colors
    Laptop screen close-up with a checklist panel of status dots beside code lines
    Using it in a real workflow

    Where this fits between generation and shipping

    1. 1

      Generate the pattern or snippet

      Prompt Pattern Forge, Elementor AI, Divi AI, or your own script to produce a block, a shortcode handler, or a style block.

    2. 2

      Paste it and pick a language

      Drop the output into the checker above and select JavaScript, PHP, Python, or CSS. Nothing uploads, the checks run in this tab.

    3. 3

      Read the checklist, not just the score

      A 90 with an unescaped echo() flagged is not production-ready. A 70 with only long-line warnings might be fine for a one-off client site. The breakdown is the point, not the number.

    4. 4

      Fix, then verify with the real tools

      Run ESLint, PHPCS with the WordPress ruleset, or pylint before the code ships. This checker is a first pass, not a replacement for either.

    Common questions about the AI code checker

    Is this AI code checker actually AI?
    No, and we would rather be direct about it: this is a rules-based static checker. It runs plain pattern matching, regex, and counting logic against your snippet, the same category of technique linters and style checkers have used for years. There is no model reading your code and no server call doing the reasoning. Call it a pre-check, not an AI code review.
    Does my code leave the browser?
    No. Everything runs client-side, in the tab you are reading right now. The only network call this page makes is an anonymous, IP-free usage beacon that records that the tool was used, not what you pasted. Your snippet is never sent anywhere.
    Which languages does it check?
    JavaScript, PHP with a WordPress lean, Python, and CSS or SCSS. Each language gets two extra checks of its own: PHP looks at escaping and text domains, JavaScript looks at async error handling and var usage, Python looks at bare except clauses and mutable defaults, CSS looks at !important overuse and hardcoded colors.
    Does a high score mean the code is safe to ship?
    No. Treat a high score as nothing obvious jumped out, not as a green light. A rules-based checker cannot catch a wrong business rule, a broken query, or a security hole that does not match one of its patterns. Run ESLint, PHPCS with the WordPress ruleset, or pylint, and read the diff yourself before it reaches a client site.
    Why build this instead of trusting Pattern Forge, Elementor AI, or Divi AI directly?
    Because AI pattern generators are good at producing code that runs, not necessarily code that is safe to ship. Elementor AI, Divi AI, and Bricks AI can each return a working pattern in seconds; whether that pattern escapes its output correctly, or leans on a dozen undocumented custom classes, is a separate question this checker gives you a fast, honest first read on.
    What if I paste an incomplete fragment?
    The checks still run, but nesting depth and function length can look worse than they are without full context, and the PHP escaping check can only see the echo statements you pasted. Paste enough of the function or file to give the heuristics a fair signal, the score is only as good as the input.
    Can I reuse this on every project?
    Yes. Nothing is saved between visits, there is no account, and no rate limit beyond your own patience pasting code. Bookmark this page and run it every time an AI pattern generator hands you something new to review.

    Ship AI-generated patterns with more confidence

    noonwp's Pattern Forge and Page Scribe are built for a workflow like this one: generate, pre-check, then read the diff yourself before it reaches a client site.

    Open the scriptorium
    Noon