SpeeJax

SpeeJax is a browser-based toolkit for people managing websites who want to reduce page weight and prepare faster web assets. It provides free tools for minifying HTML, CSS, and JavaScript, cleaning unused CSS, and formatting code into readable structures. Image workflows include local compression with original-versus-optimized size comparisons, dimension checks, resizing, JPG, PNG, WebP, and AVIF conversion, SVG optimization, and Base64 encoding. Users can estimate webpage weight and compare HTML, CSS, and JavaScript payloads with performance calculators, then generate lazy-load markup, responsive srcset HTML, and preload tags for critical resources. Supported files are processed locally without signup, server uploads, or an API, keeping files on the user’s device while helping turn optimization work into performance-ready markup.