How to Repair a Corrupted Excel File That Will Not Open
What to do when Excel will not open a file or shows an unreadable content error: common causes, built-in repair, recovering versions and online tools.
Why Your Excel File Is So Large and How to Reduce Its Size
The most common causes of heavy Excel files (phantom ranges, images, formatting, caches) and how to shrink them so they open and send faster.
Password-Protecting Excel: Protection Types and When to Use Each
The differences between encrypting a workbook, protecting its structure and protecting sheets in Excel, how secure each one is and good password practices.
Privacy and Security When Using Online Spreadsheet Tools
What to check before uploading an Excel file to an online tool, which data you should anonymize and how to work safely with sensitive information.
Backing Up Excel Files: How to Never Lose Your Work Again
Set up AutoRecover, use version history and apply the 3-2-1 rule so your important spreadsheets are always safe.
VLOOKUP vs XLOOKUP: Which One to Use and How to Get the Most from Them
The differences between VLOOKUP and XLOOKUP in Excel, practical examples of each, common mistakes and when INDEX and MATCH is the better choice.
Excel PivotTables for Beginners: A Practical Guide
Learn to build your first PivotTable in Excel, summarize sales by month or customer, filter results and avoid the most common source data mistakes.
Conditional Formatting in Excel to Spot Changes and Errors
Use Excel’s conditional formatting to automatically highlight duplicates, out-of-range values, blank cells and differences between two lists.
Data Validation in Excel: How to Prevent Data Entry Errors
Set up drop-down lists, number limits, valid dates and help messages with Excel’s data validation so your sheets receive correct data from the start.
20 Excel Keyboard Shortcuts That Will Save You Hours
The most useful Excel keyboard shortcuts for moving around, selecting, editing, formatting and working with data without touching the mouse, plus tips to memorize them.