Rust comment remover

Remove comments from
Rust code.

Remove comments from Rust source code online. Correctly handles nested block comments and raw string literals, the two features that break most regex-based tools.

Free, no signup Runs in your browser Instant, no upload Works on .rs files

Before and after

Real-world Rust code on the left. The same code with every comment removed on the right.

rust-input.rs
//! Order processing module.

// Re-exports
pub use crate::repo::Repository;

/// A single customer order.
///
/// /* outer block /* with nested */ comment */
pub struct Order {
    pub id: String,        // unique identifier
    pub total_cents: u64,  /* amount due */
}

/* Helpers */

fn raw_query() -> &'static str {
    r#"SELECT * FROM orders WHERE note = "// not a comment""#
}

// Public API
pub fn find_by_id(id: &str) -> Option<Order> {
    if id.is_empty() { return None; } // guard
    None
}
rust-output.rscleaned
pub use crate::repo::Repository;

pub struct Order {
    pub id: String,
    pub total_cents: u64,
}


fn raw_query() -> &'static str {
    r#"SELECT * FROM orders WHERE note = "// not a comment""#
}

pub fn find_by_id(id: &str) -> Option<Order> {
    if id.is_empty() { return None; }
    None
}
Why use it

Built for Rust specifically.

Rust documentation comments (/// and //!) are dense, and macro-heavy code can pile up `//` notes faster than in most languages. Removing comments is helpful before sharing a snippet, comparing implementations, or producing a compact teaching example. The hard parts of Rust, nested block comments and raw strings like r#"..."#, are exactly where naive strippers fall apart. Uncommenter handles both correctly.

  • // and /* */ comments removed
  • Nested /* /* */ */ block comments handled to full depth
  • /// outer doc and //! inner doc comments removed
  • Raw string literals r#"..."# preserved verbatim
  • Auto-detected from .rs files
How it works

Strip comments in 30 seconds.

  1. 1

    Open the tool

    Head to uncommenter.com/tool. Nothing to install. Nothing to sign up for.

  2. 2

    Paste your Rust code

    Drop your .rs file in, or paste code into the editor. Auto-detection picks up Rust from the extension or file content.

  3. 3

    Click 'Remove Comments'

    The parser walks every character with a real state machine, strings, regex, and other context-sensitive parts are detected and left alone.

  4. 4

    Copy or download

    Grab the cleaned output. Your code never left your browser.

FAQ

Rust questions, answered.

Does it handle nested block comments correctly?

+

Yes, Rust's spec allows arbitrary nesting depth for /* */ blocks, and the parser tracks depth explicitly. /* outer /* inner */ still outer */ is removed as a single comment.

What about raw strings with hashes?

+

r"...", r#"..."#, r##"..."##, and so on are all recognized. Anything inside is treated as content, including // and /*.

Will it remove documentation comments?

+

/// outer doc comments and //! inner doc comments are removed by default. They use line-comment syntax in Rust, so they're treated like regular line comments.

Other languages

Working in something else?

Plus 35+ more languages supported in the live tool , including HTML, YAML, Dockerfile, Terraform, Solidity, and more.

Try it on your Rust code now.

Free forever. No signup. No upload. Runs entirely in your browser.

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