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.
Paste an Excel formula and instantly see every nested function, argument, and logical step explained — by a deterministic parser, not an AI that can hallucinate. No sign-up, no upload, runs in your browser.
Open toolScan every cell for #REF!, #N/A, #VALUE!, #DIV/0!, #NAME?, #NULL!, and #NUM! errors. Report with cell addresses. Free.
Open tool