Page Image Weight Analyzer — Free, Fast & Private
Images are the heaviest thing on most web pages — routinely 50-70% of total transfer size, and the single biggest lever on Largest Contentful Paint. A page that feels slow is very often a page shipping a 2 MB hero JPEG that could have been 400 KB. The problem is invisible until you measure it, and most people never do.
This analyzer measures it in one paste. Give it a URL and it fetches the page's public HTML, finds every image referenced in <img> tags, srcset attributes, and the og:image social preview tag, then checks each image's reported size and format. You get a table of what the page actually loads, the total weight, and an estimate of how much a compression pass would recover.
How the savings estimate works
The estimate is heuristic, based on what MiniPx's own codecs typically achieve at visually-lossless quality: large JPEG and PNG files (100 KB and up) usually shrink by around 60%, smaller ones by around 30%, GIFs by around 40%, and already-modern WebP or AVIF files by maybe 15%. Your real numbers depend on the actual pixels — run the images through the MiniPx compressor to see exact results, for free, without uploading anything.
Honest limits
- Public HTML only. We fetch only what your page serves to any anonymous visitor. Pages behind logins, paywalls, or firewalls can't be analyzed, and we never see private content.
- Estimates, not guarantees. Sizes come from server-reported headers and savings from format heuristics. The compressor gives you the real numbers.
- HTML-declared images only. Images injected by JavaScript after page load, CSS
background-imagerules, and lazy-loaders that hide the real URL won't appear. Treat the result as a floor, not a ceiling. - Nothing is stored. The URL you paste is used for the one analysis and the result goes straight back to your browser. No image bytes are ever downloaded to our servers — we read only response headers.
From diagnosis to fix
The analyzer is the diagnosis; the compressor is the fix. Download the heavy images the table points at, drop them into MiniPx, and re-upload the compressed versions. Everything runs in your browser via WebAssembly — unlike the analyzer, the compressor never sends anything to a server at all, which is why it's safe for private and client work too.