Highlight Letters in Text
Highlight every occurrence of the letters you choose. 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 Highlight Letters in Text
- 1. Paste the text to scan. Paste the passage you want to examine into the input pane, ready to have specific letters visually marked wherever they occur.
- 2. Choose letters and case sensitivity. Type the letters to mark into Letters to highlight, such as vowels, and toggle Case sensitive to control whether uppercase and lowercase both count as matches.
- 3. Review the highlighted result. Review the rendered text where every occurrence of your chosen letters is visually highlighted in place, making their frequency and position easy to see.
When to use Highlight Letters in Text
Highlight Letters in Text marks every occurrence of the letters you choose directly within the passage. Reach for Highlight Letters in Text whenever you want to see at a glance how often and where specific characters appear in a piece of text.
- Teaching vowel recognition to early readers. A phonics lesson highlights all the vowels in a passage so students can visually identify vowel patterns in words as they practice reading aloud.
- Checking letter frequency for a design constraint. A logo or crossword design needs to avoid or emphasize a particular letter, and highlighting it across sample text shows exactly how often it shows up.
- Spotting a repeated typo pattern. You suspect a specific letter is frequently mistyped in a document, and highlighting every instance of it makes the pattern of errors easy to review at once.
Examples
Highlight vowels
Input
hello world
Output
vowels highlighted
About the Highlight Letters in Text tool
Highlight Letters in Text is a free online tool that works entirely inside your web browser. Highlight every occurrence of the letters you choose. 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 2 settings, including Letters to highlight and Case sensitive, 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 Highlight Letters 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.
Can I save what the tool produces?
Yes. Use the download or copy controls in the output panel to keep the rendered result once it looks the way you want.