Shahab Tools compresses, resizes, and converts images right in your browser; nothing ever touches a server. Drop in a batch and watch files shrink by 90–99% with zero visible quality loss, then download as a ZIP. Built out of a WordPress speed-optimization consultancy, it's already processed 72K+ images for real client sites (LCP and page-weight fixes, mostly). The free tier gives you 150 uses/month per tool; Pro removes the cap for $19/mo.