Replace double slashes (‘//’) with hash (‘#’) comments

This tool replaces double slashes (“//”) with a user-defined comment marker. You can choose from several modes. Each mode is designed to help you convert comment markers in your code while preserving URLs when needed.

Input

Output

Processing Modes:

Basic Replacement
Replace every occurrence of "//" with "#". Note: This will change all double slashes, even inside URLs.

URL-Safe Replacement
Replace "//" with "#" only if not preceded by a colon, so that URLs like "https://example.com" remain intact.

Line-Start Only Replacement
Replace "//" with "#" only when they occur at the beginning of a line (treating them as comment markers).

Custom Replacement String
Replace "//" with a custom string that you specify below.

Custom Replacement String:

Enter the string that will replace all occurrences of "//" when using this option.

Examples:

Basic Replacement

In this example, every occurrence of "//" is replaced with "#", regardless of its context. The text below is approximately 50 words.

Before:

This sample code uses // for inline comments. Every instance of // should be converted. Even if the double slashes appear within non-URL text, they become #. Note that https://example.com will also be changed in this mode if it contains //.

After:

This sample code uses # for inline comments. Every instance of # should be converted. Even if the double slashes appear within non-URL text, they become #. Note that https:example.com will also be changed in this mode if it contains #.

URL-Safe Replacement

This mode replaces "//" with "#" only when not part of a URL. Secure URLs like "https://example.com" remain unchanged, while standalone comment markers are converted.

Before:

In our script, comments start with //. The URL https://example.com/path remains intact. Also, // This is a comment should be changed. The goal is to preserve URLs.

After:

In our script, comments start with #. The URL https://example.com/path remains intact. Also, # This is a comment should be changed. The goal is to preserve URLs.

Line-Start Only Replacement

This mode replaces double slashes only when they occur at the beginning of a line, treating them as comment markers. Inline double slashes remain unchanged.

Before:

// This is a full line comment.
Some code here // not a comment marker.
Another comment: // Check input.

After:

# This is a full line comment.
Some code here // not a comment marker.
Another comment: # Check input.

Custom Replacement String

In this mode, you specify a custom replacement string. For instance, if you enter "##", all occurrences of "//" (that are not part of a URL when using URL-safety) are replaced with "##". The example text below is approximately 50 words.

Before:

This module uses // for comments in the code. You can change these markers to another symbol. For example, replacing // with a custom string like ## will transform the comments accordingly. Note that in basic mode, every instance is changed.

After (with custom replacement "##"):

This module uses ## for comments in the code. You can change these markers to another symbol. For example, replacing ## with a custom string like ## will transform the comments accordingly. Note that in basic mode, every instance is changed.