Image editing and optimization tools and programs.
With this tool you can see if the images on your website can still be optimized without loss of quality.
Bannersnack is an online platform that allows you to create HTML5 banners yourself.
Handy site to make a good Favicon + associated code.
This favicon generator also works with text and emoji.
A very extensive favicon generator that also makes many different types of code.
Bannermaken.nl is an online environment in which you can create HTML5 banners yourself.
With this tool you can optimize images for free.
Kraken.io is a comprehensive image optimization platform.
Convert PNG to SVG conversion and many more types of conversions.
Paint.net is a free alternative to Photoshop.
Speedsize converts visual content to next gen formats and makes files 90% smaller
Free tool that you can use to optimize SVG files.