Pull a banner or hero image down for a landing page without giving up its visual punch.
For marketers who would rather not context-switch between UTM builders, link shorteners, character-count pages and an AI tab. The day-to-day tools: tagged campaign URLs that survive the round-trip from spreadsheet to ad platform, character counts that match the platform limits, a slug generator for landing pages, and the AI summarizer / translator as the lingua franca for inbox triage and localization QA.
Judge it at the size it actually renders, not at 100%. A hero shown about 1600px wide, with text over it, survives moderate compression invisibly - and check the contrast of that text over the compressed version too.
WebP where you can serve it (smaller at the same visual quality), JPEG for photographs, PNG only for flat graphics or transparency. Compressing a PNG rarely buys much because the format is lossless.
No - it re-encodes at the same dimensions. If you need a smaller size as well, resize first and compress the result, so the image is only re-encoded once.