Highlight Keywords in Excel — 100% Private & Instant
Upload your Excel workbook, enter the words you want to highlight, choose bold / italic / underline and a colour — and download a formatted file in seconds. Everything runs locally; your data never leaves your computer.
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How it works
What does this tool do?
It scans every string cell in your workbook and applies Excel rich text formatting to each occurrence of your keywords — so the keyword appears bold, coloured, or italicised within the cell without changing the surrounding text.
Matching rules
- Case-insensitive matching (e.g. "urgent" matches "URGENT", "Urgent", etc.)
- Partial matches within words are highlighted (e.g. "risk" matches "at-risk")
- All occurrences in a cell are formatted, not just the first
Limitations
- Only plain string cells are processed — numbers, dates, and formula results are skipped
- Cells that already contain ExcelJS rich text may have their existing formatting replaced
- Password-protected sheets cannot be modified
Step 1 — Upload your Excel file
Drop your .xlsx or .xlsm file here, or click to browse
Single file only
Step 2 — Define keywords & styles
Step 3 — Choose where to apply formatting
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