Grep Text

Filter lines and search through text using powerful regular expressions instantly.

0 Lines | 0 Chars
0 Lines | 0 Chars
ReadOnly Mode

Ultra Fast

Changes apply in real-time. No server delays or page reloads.

100% Private

Processing happens in your browser. Your data never leaves your device.

File Ready

Easily process large log files via drag-and-drop or file selector.

Try These Examples

Find Error Lines

Quickly locate all error lines in your server logs with a simple prefix pattern.

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Extract Emails

Extract all email addresses from a contact list or document in one click.

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Filter Out Comments

Strip away comment lines from your configuration or script files with inverted match.

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Find IP Addresses

Easily find all IPv4 addresses scattered throughout your network logs.

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The Ultimate Guide to Online Grep

What is Grep?

Grep, short for "Global Regular Expression Print," is a legendary command-line tool used to search and filter text. Our online version brings the power of the Unix terminal to your browser with a modern, intuitive interface.

How to Use This Tool

  • 1 Paste your text or drag & drop a log file into the input area.
  • 2 Enter a regular expression or a simple keyword in the pattern box.
  • 3 Use "Invert" to exclude lines, or "Ignore Case" for flexible matching.

Why Use MeFancy Grep?

"Perfect for developers filtering server logs, researchers extracting data from large documents, or anyone who needs to find specific information in a mountain of text."

Common Regex Patterns

\d+

Match numbers

^Error

Lines starting with Error

[a-z]+

Only lowercase words

\.com$

Lines ending in .com