At my work, I had an opportunity to start an experiment: Writing a single parser implementation in Rust for the new Gutenberg blogpost format, and use it on many platforms and environments, like JavaScript (via WebAssembly and ASM.js), C, PHP… An existing stack using PEG.js and PEG.php was used, but it was quickly showing its limitations: slow to parse, consuming too much memory… Let's see how Rust compares the current solution, and let's learn how to use Rust in all these environments!