(there are other plugins for WebP, but this one is a bit cheap) Imagify - Online and CMS Image Compression Made Easy https://imagify.io/. Source: about 1 year ago

Tldr; upgrade your host (WPengine), compress your images (Imagify), minify and defer your scripts (Autoptimize or WP Rocket). Source: over 2 years ago

I use WP Rocket to help with site speed and they recommend Imagify. I've been trying it out on a client site for the past 2 months and it's gotten the job done without sacrificing too much quality. Source: about 3 years ago

Hi not much help on the transferring site but I personally export from LightRoom at 70% then use https://imagify.io/ to compress on the site and even my DSLR shots shrink rather nicely and still look great! Source: about 3 years ago

Maybe it will be overkill for flags, but you can try with dithering algorithms, where you can select which color you want to keep: Https://ditherit.com/ Https://github.com/noopkat/floyd-steinberg. Source: over 1 year ago

ImageMagick can do anything, but it's a commandline program. There may be some websites that dither images for you - https://ditherit.com/ is one. (I also wrote a program years ago that is excellent at color reduction and dithering, but it's not currently usable.). Source: over 1 year ago

It’s called dithering. Instead of using many different colors you just choose a few and make the best of it. With using six colors (red, green, blue, yellow, white, black) any color can be matched. You can try it out with this tool: https://ditherit.com/. Source: almost 2 years ago

I used https://pixelartselfie.com/en. I later found https://ditherit.com/ which offers more features so I’ll probably do more works. Source: almost 2 years ago

Check this website: https://ditherit.com/. Source: almost 2 years ago