Replace Vowels in Text
Substitute every vowel with a character of your choice. 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 Replace Vowels in Text
- 1. Paste the text to disemvowel. Paste the passage you want transformed into the input pane, ready to have every vowel replaced with a character of your choice.
- 2. Set the replacement and y rule. Type the character to use in Replace vowels with, often an asterisk, and toggle Treat y as a vowel to decide whether y also gets replaced.
- 3. Copy the disemvoweled text. Copy the result from the output pane, with vowels swapped out but word shapes preserved, and paste it wherever that masked-vowel style is needed.
When to use Replace Vowels in Text
Replace Vowels in Text substitutes every vowel with a character of your choice, a technique sometimes called disemvoweling. Reach for Replace Vowels in Text whenever text needs to stay partially readable while its vowels are masked or removed.
- Creating a word puzzle that hides vowels. A word puzzle masks every vowel in a set of words and challenges players to guess the original term, and this generates that vowel-masked version instantly.
- Building a lightweight profanity obfuscation. A comment moderation tool disemvowels flagged words rather than fully deleting them, keeping the word shape visible while making it awkward to read at a glance.
- Demonstrating disemvoweling as a text transform. Explaining the disemvoweling technique used in some early spam filters and games is clearer with a live example converting normal text into its vowel-masked form.
Examples
Mask vowels
Input
hello
Output
h*ll*
About the Replace Vowels in Text tool
Replace Vowels in Text runs as plain JavaScript in your browser tab, with no server behind it. Substitute every vowel with a character of your choice. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Text Tools section, 211 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Replace vowels with and Treat y as a vowel, 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.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Replace Vowels in Text cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.