---
title: "Binary Filter Modifier"
slug: "binary-filter-modifier"
description: "Information about the Binary Filter modifier."
updated: 2026-01-30T12:14:06Z
published: 2026-01-30T12:14:06Z
canonical: "kb.lasernetgroup.com/binary-filter-modifier"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.lasernetgroup.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Binary Filter Modifier

**Applies to:** Lasernet Core 11

The modifier works by searching for a regular expression. For each match, it will replace it with another string.

Both the regular expression and the replace text are written in the Latin-1 (ISO-8859-1) character set. However, because this modifier is intended for binary searches, most (if not all) characters should be written in hex using the `\x` escape.

The **Replace With** text field supports the `$1` `$2`… `$n` markers, to include portions of matched regular expressions in the replacement. This provides the ability to create advanced filters. For example, if the regular expression is `(\d+)\x20(\d+)` and the replacement string is `$2\x20$1`, then the filter will search for two numbers separated by a space character and swap the numbers.

## Settings

| **Find Regular Expression** | Regular expression to search for. |
| --- | --- |
| **Replace With** | The search value to be replaced, typed as a string or hex value. For example, `\x0d\x0a`. |
| **Replace Only Once** | If selected, it will only replace the first match. If it is not checked, it will replace all matches. |

## Example

This example searches for two spaces and replaces it with one space. ![Binary Filter modifier properties.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/binary-filter-image-rdvpuqdu.png)