I edit a lot of images for the web and I got sick of heavy desktop apps and sketchy upload sites. Two browser tools ended up in my daily rotation:
Free online image compressor for JPG/PNG/WebP. The part I care about: it processes files locally in your browser, so nothing gets uploaded to some server. You drag in a photo, pick a level, and download a much smaller file that still looks fine. I use it before publishing any screenshot or product shot — shaves page weight without visible quality loss.
When a photo is blurry, low-res, or has a messy background, ClarifyPix runs AI on it right in the browser: upscale, deblur, remove background, touch up. Handy for ecommerce listings, profile pics, or old photos you want to rescue.
Both are free, no account needed, and they're part of a small set of tools I keep at Untracked Tools. If your workflow still involves opening Photoshop to crop a JPEG, try the compressor first — it'll save you five minutes a day.