Filter Words in Text
Keep only the words that match a pattern or regular expression. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Filter Words in Text
- 1. Paste the text with words to filter. Enter a sentence or list of terms, such as a vocabulary list or a paragraph where only certain words matter for your current task.
- 2. Set the Pattern. Type the text or regular expression each word must match to be kept, such as a specific letter combination or a word-length pattern.
- 3. Set the regex, case sensitivity, and Invert options. Turn on Use a regular expression for pattern-based matching, Case sensitive to require exact capitalization, and Invert to keep the words that don't match instead of the ones that do.
- 4. Copy the filtered words. Copy the surviving words into your document, word list, or wherever the narrowed selection is needed.
When to use Filter Words in Text
Filter Words in Text keeps only the individual words matching a pattern, operating at the word level rather than across whole lines. Use Filter Words in Text when you need to isolate specific vocabulary from a passage, such as words containing a certain letter or matching a naming convention.
- Isolating words containing a specific letter for a puzzle. A word game needs only the words from a passage that contain a particular letter, like every word with an 'a' in it, to build the next round of a puzzle.
- Pulling variable names matching a naming pattern. A block of pasted code text has a mix of terms, and you want only the ones matching a specific naming convention, using a regular expression to isolate them.
- Extracting long words from a passage for a vocabulary list. A reading passage needs its more advanced vocabulary pulled out for a study list. Filtering for words matching a minimum length pattern isolates the longer terms.
- Removing short filler words while keeping meaningful terms. A text sample has a lot of short connector words diluting a keyword extraction step. Using Invert with a pattern for short words keeps only the longer, more meaningful terms.
Examples
Keep words containing an a
Input
cat dog bat fox
Output
cat bat
About the Filter Words in Text tool
Filter Words in Text is a free online tool that works entirely inside your web browser. Keep only the words that match a pattern or regular expression. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 211 Text utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 4 settings, including Pattern, Use a regular expression, Case sensitive and Invert (keep words that don't match), and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Filter Words in Text free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.