Text Transformers
About Filter Lines
Filter Lines is a free online text transformer from Toolbench. Return lines that match a pattern or regex. Paste your text and the result updates instantly as you type or change the options.
- Category
- Text Transformers
- Price
- Free
- Account
- Not required
- Runs
- Entirely in your browser
How to use Filter Lines
- Paste or type your text into the input box.
- Adjust the options (pattern, regex, ignore case, invert (non-matching)).
- Copy the result, or click “use output” to chain another transformation.
Example
With the default settings, this input:
The quick brown fox jumps over the lazy dog. It was a sunny day!
Indented line here.
Short linebecomes:
The quick brown fox jumps over the lazy dog. It was a sunny day!Options
| Pattern | Default: fox |
|---|---|
| Regex | On / off |
| Ignore case | On / off (default on) |
| Invert (non-matching) | On / off |
Privacy
Everything runs in your browser: what you type or paste is processed by JavaScript on your device, not on a server. If you are signed out, nothing is saved at all. If you sign in with Google, your inputs and settings are saved privately to your account so they sync across devices.
Frequently asked questions
Is Filter Lines free?
Yes. Filter Lines is completely free with no sign-up, no usage limits and no watermarks.
Is my data private?
Yes. Filter Lines processes everything in your browser. Signed out, nothing is saved; signed in, your inputs sync privately to your own account.
Can I apply several transformations in a row?
Yes. All text transformers share the same input, so you can run one, click “use output” to make the result the new input, then pick another transformer.
Does it work on my phone?
Yes. Toolbench runs in any modern browser on desktop, tablet or phone — there is nothing to install.
Related text transformers
- Add Symbols Around LettersSurround each letter with decorative symbols.
- Remove Empty LinesDelete all blank lines.
- Remove Duplicate LinesDelete all repeated lines, keeping the first.
- Filter WordsReturn words that match a pattern or regex.
- Filter SentencesReturn sentences that match a pattern or regex.
- Filter ParagraphsReturn paragraphs that match a pattern or regex.
- Sort LinesSort lines alphabetically, numerically or by length.
- Sort SentencesSort sentences alphabetically, numerically or by length.
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