Free WebP and AVIF converter. Compress and optimize images on your own server and serve the best format. No API key, no account, no limits.
Alternatives to Halka WebP Image Optimizer
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
The Ultimate Image Optimization Suite for WordPress. WebP & AVIF conversion, Smart Format Selection, Watermarking, and Lazy Load. Zero server load.
Unlimited image optimization - Auto optimize on upload, Bulk optimize, WebP & AVIF conversion. No API key, no monthly fee, no limits.
Converts your images to WebP a little at a time, so even a cheap shared host can optimize a large media library without timeouts.
Automatically compress every image and serve WebP and AVIF to every visitor. Small files, the quality you choose, zero manual work.
Convert JPEG, PNG & GIF to WebP and bulk-optimize your Media Library entirely on your own server. No external services. No data sent. No quotas.
Compress images and convert them to WebP on your own server. No external API, no credits, no monthly quota. Every original is backed up.
Optimize images and convert to WebP & AVIF on your own server. Local, private, no cloud, no credits — faster site and better Core Web Vitals.
Compress images to WebP/AVIF for free — locally with PHP-Imagick, otherwise converted by fepo. Fonts subsetted by fepo (uses credits).