Unit Converter, Video Converter, Audio Converter, Image Converter, Ebook Converter and Document Converter

https://www.onlineconverter.com/

Same as above and something more

https://123apps.com/

Upload an image to remove the background

https://www.remove.bg/upload

Remove Audio from Video

https://www.audioremover.com/

Same as above but again more

https://pinetools.com/

Favicon Generators

https://favicon.io/

Online reference and tools - calculators, converters, math, electricity, web design

https://www.rapidtables.com/