Zamzar - Free conversion online of many type of documents (images, text, video, audio...
JPGtoExcel.com - This image to excel converter helps to convert text and tables data from images to excel spreadsheets with OCR processing for free
Vertopal - Vertopal is an online platform for converting computer files to a variety of file formats.
theonlineconverter.com - Theonlineconverter.com is an online file conversion platform which offers a user-friendly, cross-platform online tools for user's diverse needs. It allows batch conversion of files and is completely free of cost.
Convertio - File Conversion in the Cloud
CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.