Text Highlighter

When to use?

Use it to quickly spot important keywords in a long document or log. Highlight several keywords at once to scan complex text fast.

How to use

• Paste the text to highlight.
• Enter the keywords to find.
• See the result with keywords highlighted in color.

Input Explanation

Enter the source text and the keywords to find (separate multiple with commas).

Calculation Basis

It searches keywords (split by comma or line break) in the text and wraps matches in <mark> elements. With case-insensitive on, only the comparison string is lowercased.

Usage Examples

• Analyze logs - Quickly find important keywords like ERROR, WARN in log text by color.
• Review documents - Highlight key keywords to review in a long document.
• Count keyword occurrences - Count how often a word appears in a document, with highlighting.

Examples

• Enter "ERROR", "WARN" → ERROR highlighted red, WARN yellow
• Highlight "penalty", "termination" in a contract → see each keyword's count

Cautions

• Counts can vary by how spaces and line breaks are handled.
• A case-insensitive option is provided.

FAQ

Can I highlight keywords in different colors?

Yes, each keyword is auto-assigned a different color.

Is it case-sensitive?

A case-insensitive option is provided.

Can I see how many times a keyword appears?

Yes. It shows the match count per keyword.

Related Tools

• Forbidden Word Checker - Find and highlight forbidden words in text based on a user-provided list.
• Line Filter - Filter lines of text by keyword include/exclude conditions.
• Text Compare - Compare two texts line by line to show added, removed, and identical lines.
• Character Counter - Count characters with and without spaces, and line count, in real time.
• Byte Counter - Calculate the byte length of text when stored as UTF-8.
• Case Converter - Convert text, variable names, and filenames to UPPER, camelCase, snake_case, kebab-case, and more.