# Website Optimizer > Automatically compress images to WebP/AVIF and generate AI alt text for Webflow CMS. Speed up your site and improve image SEO in bulk. Website Optimizer connects to a Webflow site via the Webflow CMS API and automates image optimization across every CMS collection (Image, MultiImage and RichText fields). Core features: - **CMS Scanning** — Finds photos in Image, MultiImage and RichText fields across all collections. - **Alt-text** — Gemini Vision describes every photo and creates accessible, SEO-optimized alt texts in 7 languages. - **SEO Filenames** — Creates readable, SEO-friendly filenames in 7 languages, based on the image content. - **WebP / AVIF Conversion** — PNG and JPG are automatically converted to the modern WebP or AVIF format. - **Smart Compression** — Choose a profile and the optimizer compresses files to your target while preserving visual quality. - **Resize & Crop** — Reduces oversized dimensions to your target while preserving aspect ratio. - **Review & Edit Before Publishing** — Approve everything, fix any text, and choose exactly which photos go live. - **One-click Publish to Webflow** — Direct CMS API integration replaces originals and updates entries — no re-uploading, no broken links. Pricing: pay-per-credit, no subscription, no card required to start. New accounts get 10 free credits. 1 credit = $0.15 USD, spent on AI alt-text/filename generation, format conversion, compression, resizing and publishing back to Webflow. ## Docs - [Home](https://websiteoptimizer.pl/en): product overview, feature breakdown, pricing and a time/cost savings calculator. - [Help & FAQ](https://websiteoptimizer.pl/en/support): setup guides, frequently asked questions and contact options. ## Guides - [App configuration](https://websiteoptimizer.pl/en/support/setup): From creating an account to your first scan — connect the app to Webflow step by step. - [Manage alt text without credits](https://websiteoptimizer.pl/en/support/manage-alt-text): Add and edit alt texts yourself and save them straight to Webflow — no credits, no limits. ## Optional - [Terms of Service](https://websiteoptimizer.pl/en/regulamin) - [Privacy Policy](https://websiteoptimizer.pl/en/polityka-prywatnosci) - Contact: contact@websiteoptimizer.pl