What it does

For stores that add and change products often. When a product, category or page is created, saved, hidden or deleted, its URL is sent with IndexNow, the free protocol of Bing, Yandex, Seznam, Naver and others; Google does not use it. The key and its file are created for you. Product and category pages can also send Last-Modified and answer 304 Not Modified to guests whose copy is still current.

How it works

Install and open Website, IndexNow & Last-Modified. Queue your catalog once and press Send now. From then on every save in the admin panel queues the URL and sends it at the end of the request; a cron job sends the rest, for example after imports. The log lists every send with the engine's answer explained, and failed sends are tried again. Exclude paths with wildcards, add URLs by hand or create a new key.

Features

IndexNow for new, saved, hidden, disabled and deleted products, categories and pages
Key and key file created for you, with a fallback key URL
Queue with sending on save, cron job and Send now
Send log with the answer of the engine explained
Retries for busy or unreachable endpoints
Whole catalog in one click and URLs by hand
Exclusions with wildcards
Last-Modified and 304 Not Modified for guests on product and category pages
Promotion and cache changes count as page changes
No account, no paid service, no storefront scripts

What you get

Package	kv_indexing_booster-1.0.0.zip, installed through Add-ons → Manage add-ons
Updates & support	12 months included. Download new versions from your account and install them in Add-ons → Manage add-ons or the Upgrade Center.
License	1 production installation. Staging, dev and localhost are free and unlimited. The add-on keeps working after the update period ends. How licensing works

Compatibility

We list only the builds we install and test on. “Tested” means the full test plan was run on that build; “Supported” means the build is inside the supported range and uses the same hooks.

CS-Cart version and edition compatibility
CS-Cart version	CS-Cart	CS-Cart Ultimate	Multi-Vendor	Multi-Vendor Ultimate
4.22 and later	Testing next	Testing next	Testing next	Testing next
4.21.2	Supported	Supported	Supported	Supported
4.20.x	Supported	Supported	Supported	Supported
4.19.x	Supported	Supported	Supported	Supported
4.18.x	Supported	Supported	Supported	Supported
4.17.2	Tested	Supported	Tested	Supported
Before 4.17.2	Not supported	Not supported	Not supported	Not supported

Last tested build: Multi-Vendor 4.17.2, Nov 2, 2026Tested on: Multi-Vendor 4.17.2, CS-Cart 4.17.2

Requirements

Platform	CS-Cart or Multi-Vendor 4.17.2 to 4.21.x
PHP	PHP 7.4 to 8.3 with the cURL extension (CS-Cart needs it too)
Requirement	The store must be reachable from the internet over its own domain: the engines read the key file from it
Requirement	Optional: a cron job, see below
Core changes	None. Hooks and template overrides only

1.0.0

Nov 2, 2026

Latest

Added 3

IndexNow: queue and send the URLs of new, saved, hidden, disabled and deleted products, categories and content pages; key and key file created on install; one request per host.
Sending on save, cron job, Send now, whole catalogue, URLs by hand, exclusions with wildcards; send log with the answers explained and retries.
Last-Modified and 304 Not Modified for guests on product and category pages, with promotion and cache changes and a days limit.

Tested on Multi-Vendor 4.17.2, CS-Cart 4.17.2. First release.

Does Google use IndexNow?

No. Google does not take part in IndexNow. Use your sitemap and Google Search Console for Google. Bing, Yandex, Seznam, Naver and the other IndexNow engines share the URLs they receive.

Does IndexNow make my pages rank higher?

No. It tells the engines a URL changed, so they can crawl it sooner. Whether and when they crawl or index it is their decision.

Do I need an account or an API key?

No. IndexNow is free and needs no account. The add-on creates the key and the key file itself.

Is the 304 answer safe for my customers?

It is sent only to visitors without a sign-in, without items in the cart and without pending messages, and only when the visitor's copy is not older than the page's last change. Everyone else always gets the full page. Keep the setting off if your product pages show content that changes without a product, category, promotion or cache change, or lower the days limit.

Does it work with the full page cache of CS-Cart 4.21?

The add-on does not answer 304 itself while the core Full Page Cache add-on is active; it only adds the Last-Modified header. IndexNow sending runs in the admin panel and the cron job only. This combination was not tested on a live 4.21 store with Varnish.

Are the URLs of products changed by an import sent?

Imports that save products through the core functions queue them. Send them with Send now or the cron job.

What happens when I delete a product?

Its URL is queued before it is deleted, so the engines learn that it is gone.