Color-code every cell in an Excel workbook: formula cells in one colour, hardcoded values in another. ExcelJS. Pro tier.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Upload your XLSX file
ExcelJS inspects each cell — formula cells get a blue fill, hardcoded cells get amber
Download the colour-coded workbook for auditing
0 bytes uploaded. Formula vs. Value Highlighter runs entirely in your browser using SheetJS and ExcelJS. Your spreadsheets never leave your device.
Yes — the colour picker lets you assign any fill colour to formula cells, hardcoded numeric cells, and hardcoded text cells independently.
The colouring is applied to a new copy of the file. Your original is unchanged. Remove highlighting by selecting all cells and clearing fill colour in Excel.