Performance, Security & Compliance
Image Optimizer (WebP/AVIF & Lazy Load)
Serves images as WebP and AVIF with a fallback, adds native lazy loading and LCP priority, and compresses originals with one-click restore.
Platforms
CS-CartAdd-ons and themes for CS-Cart and Multi-Vendor
OpenCartExtensions and themes for OpenCart 4 and 3Stores
CS-Cart & Multi-Vendor · 9 products
Cookie consent with Google Consent Mode v2, WebP images, EU Omnibus price history, two-factor login, CAPTCHA and order risk checks for CS-Cart and Multi-Vendor.
Compliance features such as cookie consent and Omnibus price history help you meet common EU requirements. They do not replace legal advice for your store.
Performance, Security & Compliance
Serves images as WebP and AVIF with a fallback, adds native lazy loading and LCP priority, and compresses originals with one-click restore.
Performance, Security & Compliance
Fast guest pages on normal hosting, without Varnish: private data protection, product level purges and a built-in warmer.
Performance, Security & Compliance
Self-hosted GDPR cookie banner with a preference center, automatic script and video blocking, Google Consent Mode v2, Meta and TikTok consent signals and a consent log.
Performance, Security & Compliance
Records every price change and shows the lowest price of the last 30 days next to price reductions (EU Omnibus Directive), with a price history chart and CSV export.
Performance, Security & Compliance
Two-step sign-in with authenticator apps and passkeys for admins, vendors and customers, plus passwordless passkey sign-in.
Performance, Security & Compliance
Spam protection for every CS-Cart form: a built-in check with no third party, or Cloudflare Turnstile and hCaptcha, plus a honeypot, minimum fill-in time and rate limits per IP.
Performance, Security & Compliance
Fraud score for every order with block and allow lists (e-mail, domain, phone, IP or range, address, customer): hides cash on delivery for risky customers, holds risky orders for review and asks COD buyers to confirm by link or 6-digit code.
Performance, Security & Compliance
Helps you show GPSR product safety information (manufacturer, EU responsible person, identifiers, warnings), the official EU legal guarantee notice and GARAN producer guarantee labels.
Performance, Security & Compliance
Stop AI crawlers, scrapers, scanners and unwanted countries before CS-Cart builds a page, with a one-second challenge instead of a captcha.

Prices, licences, full documentation and instant downloads are on the store.
cs-cart.kaviolabs.com · 98 add-ons · 29 themes
Images are usually the heaviest part of a product page, so start there. Image Optimizer serves WebP and AVIF with a fallback, adds native lazy loading and LCP priority, and compresses originals with one-click restore.
Then cache. CS-Cart 4.21 has its own full page cache, which uses Varnish. Full Page Cache Pro is for normal hosting without Varnish or Redis: it stores finished pages as compressed files and sends them to guests. Its rule is that a page belonging to one visitor must never reach another, and anything it does not recognise means no cache.
Bot & Country Blocker also helps here: AI crawlers, scrapers and scanners are stopped before CS-Cart builds a page. It starts in learning mode, where rules only log what would be blocked.
| Risk | Add-on | Protection |
|---|---|---|
| Stolen admin passwords | Login Security: 2FA & Passkeys | Authenticator apps and passkeys for admins, vendors and customers |
| Form spam | Captcha Pro | Built-in check, Cloudflare Turnstile or hCaptcha, honeypot, rate limits |
| Fraudulent orders | Order Risk Guard | Fraud score, block and allow lists, hides cash on delivery for risky customers |
| Unknown changes | Admin Activity Log | Field-level history and alerts |
Two-step sign-in for admin accounts is the cheapest protection on this page, since a CS-Cart admin login reaches customer data. Add it first.
These add-ons help you show or record what the rules ask for. They do not replace legal advice, and we make no promise that any store is compliant because it installs one.
Rules vary by country and business, so check with your adviser which of these apply to you.
If your store already uses the 4.21 full page cache, check each add-on’s page for cache support. Add-ons that print personal data on a cached page are a known risk, which is why our product pages state their cache behaviour.
FAQ
Yes. It is a self-hosted banner with Google Consent Mode v2, Meta and TikTok consent signals, automatic script blocking and a consent log.
No. Like every Kavio Labs add-on, they work through hooks only.
No add-on can do that alone. They give you tools for consent and data handling. Your adviser decides what your store needs.
Image Optimizer, since images are usually the heaviest part of a page. Then a page cache.
No. It works on normal hosting, without Varnish, Redis or a server change.
Yes. Bot & Country Blocker starts in learning mode, where rules only log what would be blocked.
Yes. Login Security supports authenticator apps and passkeys for admins, vendors and customers.
Yes. Captcha Pro has a built-in check with no third party, and can use Cloudflare Turnstile or hCaptcha if you prefer.
Kavio Labs
The same standards, the same support desk and one licence portal on every platform we build for.