CoreXLSX is a library focused on representing the low-level structure of the XML-based XLSX spreadsheet format. It allows you to open a spreadsheet archive with .xlsx extension and map its internal ...

Convert multiples files to Markdown (PDF, PowerPoint, Word, Excel, Images, Audio, HTML, CSV, JSON, XML and ZIP). OCR for PDF files. Simple REST API interface Docker support Easy deployment with Docker ...

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Learn how to change the default file format for saves in Word, Excel, and PowerPoint, so that you do not need to change it every time.