Smaller files without leaving the browser
Blog hero images bloated to four megabytes hurt mobile LCP scores and bounce rates. Compress before upload to WordPress, Notion, or a client portal when you do not have a build pipeline handy.
When to compress aggressively
Thumbnails, background textures, and email banners tolerate heavier compression. Product photos and screenshots with fine text need lighter settings or PNG/WebP lossless paths.
Honest limits
Browser-based tools handle single files well but lack batch policies, automatic format negotiation, and edge caching. Keep originals archived; compression is destructive.