DataMimi – PDF, Excel & Mini-App tools

Merge, compress, convert PDFs; clean and combine Excel; make Mini-Apps for repeated work. PDF & Excel tools need no account.

DataMimi puts more than 60 free file tools one click from your toolbar. PDF: merge, split, compress, rotate, add page numbers, watermark, protect or unlock, and convert PDF to Word, JPG or PNG — or Word, Excel, PowerPoint and images to PDF. Excel and CSV: merge files, join two files on a column (like VLOOKUP), remove duplicates, clean messy sheets, pivot tables, split files, and convert between Excel, CSV and JSON. Also: business calculators, and an AI analyst that answers questions about your spreadsheet. How it works: click the DataMimi icon and type what you need ("compress", "merge excel", "pdf to word"), or right-click a link to a PDF or spreadsheet and choose "Open with DataMimi". The tool opens on datamimi.com in a new tab. The free tools need no account, and files are deleted within two hours. Privacy: the extension reads nothing from the pages you visit and sends no data anywhere. Its only permission is the right-click menu.