About the Text Grep Tool
The Text Grep Tool filters and extracts lines that match a given regular expression — useful for searching logs, extracting specific patterns, and processing large text files.
Regular expressions let you describe a pattern instead of a literal string, so you can match anything from a specific error code to any line that looks like an email address or timestamp. This tool checks every line of your pasted text against your pattern individually and keeps only the ones that match — the same idea as the Unix grep command, but right in your browser.
How to Use This Tool
Paste your text
Enter or paste the text you want to search.
Enter a regex pattern
Type the regular expression you want to match against each line.
Click "Grep Text"
Every matching line is instantly extracted.
Copy the result
Use the "Copy" button to save the filtered lines.
Common Use Cases
Searching Server Logs: Extract every line matching an error code, IP address, or timestamp pattern.
Finding Lines with a Specific Format: Pull out lines matching a pattern like an email address or a phone number.
Filtering Code or Config Output: Search pasted output for lines matching a variable name or setting.
Data Cleaning: Isolate rows in a pasted dataset that match a particular pattern before further processing.
Why Use This Tool
Precise Pattern Search
Regular expressions allow precise, flexible searching.
Great for Log Analysis
Quickly extract relevant lines from large text blocks.
Saves Time
Filters only the information you actually need.