🔍 Filtering

Remove Lines Matching a Regex

When a simple word filter is not enough, write one regex and remove every line it matches — instantly, on lists of any size.

  • 100% free, no limits
  • No sign-up
  • Your data never leaves your browser
  • Results in under a second
Use the Remove Lines Matching a Regex tool now ↓ Open it in the full Notepad

Free tool Paste your list — the Remove Lines Matching a Regex tool does the rest

The example below is already loaded, so you can see exactly what you get. Replace it with your own list and the result updates as you type.

Got a bigger job? The full Notepad runs the same engine on lists of any size — chain this with dedupe, sort and filter, undo any step, and save the whole routine as a recipe for next time.

Example Remove Lines Matching a Regex tool: before and after

Before
best running shoes 2023
best running shoes 2024
best hiking boots
After
best hiking boots

How it works What the Remove Lines Matching a Regex tool does

Removes every line matching a regular expression pattern you provide, with no delimiters needed — just the pattern itself.

3 steps How to use the Remove Lines Matching a Regex tool

  1. Paste your list into the box above — one item per line. Keyword exports, crawl exports and spreadsheet columns all work.
  2. Check the settings and adjust them to your job — the result updates as you type.
  3. Copy the result and paste it wherever it needs to go. Nothing is uploaded, so client and confidential data stay on your machine.

Use it to When to use the Remove Lines Matching a Regex tool

  • Strip out every keyword containing a 4-digit year using a single pattern
  • Remove lines matching a complex format a simple text filter can't catch
  • Clean data against a precise pattern before a bulk import

FAQ Remove Lines Matching a Regex tool questions

Is this tool free to use?

Yes. Remove Lines Matching Regex runs entirely in your browser below, with no sign-up, no limits, and nothing sent to a server.

Do I need to know regex syntax to use this?

Yes, this operation requires a valid regular expression pattern — the full Notepad tool includes a live match preview to help you get it right.

Pairs well with More Filtering tools, all free

🔍 Regex Line Filter

The grep you wish your spreadsheet had: type a pattern and only the matching lines stay. Test and refine it l…

🔍 Remove Short Lines

One-word junk and broken fragments hide in every export. Set a minimum length and they are gone.

🔍 Remove Long Lines

Enforce a length limit in one click: every line longer than your number is removed, the rest stays untouched.

🔍 Negative Keyword Filter

Stop deleting junk keywords one filter at a time. Paste your whole negative list once and every line containi…

Stop fixing lists by hand

The Remove Lines Matching a Regex tool is one of the free tools inside Seowolf’s Notepad. Paste a list once, then dedupe, filter, sort, compare and format it in seconds — every step undoable, nothing uploaded, no account.

Open the Notepad — it’s free
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