PHP beautifier - format PHP in your browser with the real Mago
PHP gets a full reformat in the browser, not just an indent fix. Under the hood it runs **Mago** (a modern Rust-written PHP 8.x formatter) - the original compiler-grade formatter compiled to WebAssembly. The same one you use in the terminal or in CI.
What this means in practice: it wraps long lines (100 chars by default), normalises indentation (tab / 2 / 4 spaces - your pick), normalises spacing around operators, aligns function arguments, respects the language's idiomatic conventions (`if (x)` vs `if(x)`, etc.). Exactly what `Format Document` does for PHP in VS Code with the official extension.
Accepts .php files. Everything runs in your browser - the code never leaves your machine, no upload, no server-side logs. The WASM blob lazy-loads on the first click (60-300 kB), subsequent formats are instant.
Mago is a modern PHP formatter written in Rust (by the Carthage team), with full PHP 8.x support. It wraps long lines, normalises quotes (defaults to single quotes for plain literals, double for `"$var"` interpolation), respects PSR-12 brace styling. The WASM bundle is 1.2 MB - fetched on the first format, instant after that.
How to use it
- Pick a mode (Gentle / Aggressive / Cosmetic-only) or keep the default.
- Paste your code into the left panel, or use "Upload file".
- Tune settings (gear icon): indent, width, quotes, semicolons.
- Click Format - first click takes a moment (libraries lazy-load).
- On the right you get the output with syntax highlighting - copy, download, or open in new tab.
When this is useful
Five typical PHP situations:
- Pretty-print a messy source. Code you pasted from a colleague / a PDF / a blog post has broken indentation. Mago does a full reformat in a second.
- PR review. The team uses a consistent style - Mago enforces the official style of the language, so code review stops shouting about whitespace.
- Convert tabs to spaces (or back). One project's `.editorconfig` says 4 spaces, another says 2 - switch in the settings popover.
- Sanity-check syntax. If Mago rejects the code with a parse error you have a syntax typo - a quick sanity check before kicking off a build.
- Syntax-highlighted preview. After formatting you get a coloured preview (powered by Shiki, the same TextMate grammars VS Code uses).