Grep (Global Regular Expression Print) filters lines of text, keeping only those that match a specified pattern. This tool implements grep with both plain text and regex matching.

What is head and tail?

Head returns the first N lines of a file; tail returns the last N lines. Both are classic Unix commands commonly used to preview log files and data streams.

Text Line Filter — Grep, Head, Tail, Range

How to Use text-filter

Paste or enter your input into the text field.
Configure any options (format, delimiter, encoding, or mode) using the controls above the output.
The result updates instantly — no submit button required for most operations.
Click Copy or Download to take the output to your next step.

Grep, head, tail, and line range extraction. Free to use with no sign-up — the tool operates entirely in your browser, nothing sent anywhere.

How text-filter Works

text-filter is a browser-side text utility built for speed and simplicity. Paste your input and the result appears within milliseconds. The tool handles edge cases — empty inputs, special characters, large datasets — without crashing or producing silent incorrect output. If you need a related operation, check the Related Tools section below.

Accepts large inputs — no size limits imposed by this tool
Handles edge cases: empty fields, special characters, and Unicode
Copy-to-clipboard and file download for every output
Works on Chrome, Firefox, Safari, and Edge without any extensions

Frequently Asked Questions

What does text-filter do?

text-filter grep, head, tail, and line range extraction. Results appear immediately — no page reloads, no waiting for a server response.

What input does text-filter accept?

Paste text directly into the input field, or type your data. Most operations handle Unicode, special characters, and multi-line inputs without issue.

How large an input can I process?

There is no hard limit imposed by this tool. Very large inputs (multi-MB text) process within your browser's available memory. For files larger than 50 MB, a command-line tool may be faster.

Can I download the output?

Yes — every output panel includes a Copy to Clipboard button and a Download as file option. Outputs are saved as plain text or the appropriate file format for the operation.

Explore the full suite of Text tools and 290+ other free utilities at Chunky Munster.

Text Line Filter online

Grep, head, tail, and line range extraction — runs in your browser