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Prop 65 Warnings for OpenCart 2.3, 3.x and 4.x — California warnings on the product, cart and checkout
Warning on the product Warning at checkout Warning at checkout (2) Warnings in the admin
OpenCart

Prop 65 Warnings for OpenCart 2.3, 3.x and 4.x — California warnings on the product, cart and checkout

Shows the Proposition 65 warning on the product, cart and checkout in OpenCart. Verbatim wording, state logic and a record on the order. Lifetime Pro licence. The module does not decide for you and is not legal advice.

Download fromOpenCart
Pro · lifetime licence Staging copies are included. The more sites, the cheaper each one
Compatibility
OpenCart 4.0.2.x and 4.1.x (tested on 4.0.2.3 and 4.1.0.3), 3.0.x (tested on 3.0.5.0), 2.3.0.2 · PHP 7.0+ · admin language: English
Version
v1.0.1 (OpenCart 4)
v1.0.0 (OpenCart 3.x)
v1.0.0 (OpenCart 2.3)
Licence
a site + a staging copy, lifetime
Trial
7 days, no card, one per site
Updated
01.11.2026
Or all 394 Pro modules with All Access — 4 990 ₴ / year ≈ €98

What Free has,
and what Pro adds

The free version works with no time limit. Pro adds the rest of the features in the table.

Feature Free Pro
A warning per product, all verbatim wordings ✔ ✔
Display on the product page, cart and checkout ✔ ✔
Three modes: everyone, California or unknown address, California only ✔ ✔
A record on the order ✔ ✔
The last 100 records on screen ✔ ✔
Rules per category and manufacturer — ✔
Exceptions per product — ✔
CSV import and export of rules — ✔
Supplier notice register — ✔
Full journal and its CSV — ✔

What it looks like

Warning on the product
OpenCart 4.1: the warning on the product page. Test shop.
Warning at checkout
Warning at checkout (2)
OpenCart 4.1: the warning at checkout.

Key points

What the buyer sees

On the product page the buyer sees a box with the symbol, signal word and text, or a link to the warning.

What the admin gets

On the product you pick the wording and chemicals, and in the settings the display mode.

How much it costs

The base version is free. Pro costs 1 290 UAH, a one-time payment for a lifetime licence.

The trial starts when you ask

A fresh install is the free version, nothing switches on by itself. The “Try Pro for 7 days” button → e-mail → the key right in the window and by e-mail.

One key — a site and a staging copy

Moving the site? Unlink the licence on the old domain and activate it on the new one yourself. A staging copy (staging., dev.) works with the same key and does not take a site slot. For studios — keys for 5 or 25 sites, or unlimited.

Technical requirements

  • OpenCart 4.0.2.x and 4.1.x, 3.0.x or 2.3.0.2 · PHP 7.0+.
  • Special cases of section 25607 go only through custom text, which the module does not check.

Version history

v1.0.1 OC 4.x Current 01.11.2026

Before updating to this version, note the settings and the licence key, or replace the files over FTP without uninstalling: later updates keep them.

v1.0.0 First release November 2026

For OpenCart 4.x, 3.x and 2.3: verbatim wording, product, cart, checkout, a record on the order.

Frequently bought with Prop 65 Warnings

All Access Need more? All modules (394) under one licence, new ones are added automatically. 4 990 ₴≈ €98 Learn more →

Full module description

Prop 65 Warnings helps you show the Proposition 65 warning to the buyers who need it: on the product page, in the cart and at checkout. A buyer outside California does not see it, and the order keeps a record of what was shown.

This is not legal advice. The plugin shows the warning you chose. Whether a product needs one, which wording fits and which chemicals to name are for you to decide with your supplier or a California lawyer.

What the buyer sees

On the product page the buyer sees a box with the symbol, signal word and text, or a link to the warning. The same appears in the cart and at checkout before the button, with the product name. At checkout an unknown address shows the warning in every mode. Only a saved address outside California hides it.

What the admin gets

On the product you pick the wording and chemicals, and in the settings the display mode. The text is not translated: it is a verbatim quote. Food wording has no symbol, because section 25607.2 does not include one.

When Pro ends, warnings and records stay: without Pro only admin screens close. A separate test covers this.

How it works, step by step

  1. You mark a product and pick the wording.
  2. The buyer sees the warning on the product page.
  3. The plugin checks the delivery state.
  4. Cart and checkout show the warning if California is possible.
  5. The shown text is recorded on the order.

Under the hood

  • The selector on the page can only add California and never hides the warning.
  • The symbol is an SVG drawn from the regulation description.
  • The warning text does not pass through translation.
  • A rule change needs a new release.

How to install

  1. Extensions → Installer: upload the archive for your version and keep the file name.
  2. OpenCart 2.3: the Installer copies files only with FTP enabled. Without FTP copy the contents of upload/ to the shop root by hand.
  3. OpenCart 2.3 and 3.x: Extensions → Modifications → Refresh.
  4. Extensions → Modules → Prop 65 Warnings → install button → Edit.
  5. Set the display mode, open a product and pick the wording.
  6. For Pro: paste the key or start the 7-day trial.

Questions
about the module

Didn't find the answer? Message us on Telegram and we'll reply within a business day.

@catcode_support Setup, compatibility, activation
Does the plugin shield me from claims?

No. It only shows the text you chose. You decide about the product and the wording.

Why is the text in English?

The wording is a verbatim quote of the regulation, so the plugin does not translate it.

Will a buyer from another state see the warning?

Only while the state is unknown. Once the address is surely outside California, the warning hides.

What happens when the trial ends?

Warnings and records stay, and only the Pro admin screens close.

Is there one for WooCommerce?

Yes, it is a separate plugin.

Not quite what you are looking for?

We build custom modules for WordPress, WooCommerce, OpenCart and Shopify. Tell us about the task and we'll prepare an estimate.

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