QuickFreeTools

Online Highlight Words in Text

Wrap specified words in HTML <mark>. Enter words to highlight (one per line or comma-separated); matches are whole-word by default. Client-side only.

The <mark>quick</mark> brown <mark>fox</mark> and the lazy dog.

Preview:

The quick brown fox and the lazy dog.

Frequently Asked Questions

Whole word or partial?
By default matches are whole-word: 'cat' matches 'cat' but not 'category'. You can often switch to partial match to highlight substrings.
Multiple words?
Enter one word per line or comma-separated. Each word is found and wrapped in <mark> (or your chosen tag). Overlaps are handled in order.
Case sensitive?
You can usually choose to match case exactly or ignore case when highlighting words.

Related Text Tools