Setting up SEO-friendly URLs for 1C-Bitrix Catalog Filter

Introduction

The default smart filter works via GET parameters: /catalog/?arrFilter_p1_286=15&arrFilter_pf_min_PRICE=1000. Such URLs are not indexed by search engines, cannot be marked up with Title/Description, and do not bring SEO traffic. We've repeatedly encountered situations where a client lost up to 60% of potential visitors because filter pages dropped out of the index. SEO-friendly URLs transform filter combinations into human-readable URLs like /catalog/smartfony/apple/ with their own meta tags — Title, H1, Description, Keywords. This allows each filter combination to get a unique page that is indexed and ranked separately. According to our estimates, 80% of online stores on the 1C-Bitrix platform lose up to 60% of organic traffic due to non-indexable filters — configuring SEO URLs solves this problem.

How SEO URLs work in 1C-Bitrix

The smart filter component (and its SEO extension) creates a separate mapping table: filter value combination → URL. Configuration is done in the admin panel: "Content → SEO → Smart Filter".

Two modes:

Automatic — URL is generated based on a template using property values. For example, the "Brand" property → URL part from the property value's CODE.

Manual — a specific combination of values is manually linked to an arbitrary URL.

Automatic mode is 3–4 times faster than manual, but manual gives more control over semantics.

Configuring SEO URL templates

In the "SEO → Smart Filter" section for an infoblock, rules are configured:

URL Template: /{=this.SECTION.CODE}/{=property.BRAND.VALUE_CODE}/
Title: Buy {=property.BRAND.VALUE} — {=this.SECTION.NAME}
Description: Wide selection of {=property.BRAND.VALUE} in the {=this.SECTION.NAME} section. Delivery across Russia.
H1: {=property.BRAND.VALUE}: product catalog

Variables in templates:

Configuring SEO URLs via API

For non-standard logic — for example, combining multiple properties in one URL — we use the API:

use Bitrix\Iblock\SectionPropertyTable;
use Bitrix\Seo\Filter\AdminPage;

// Creating a SEO rule for a combination of properties
$result = \Bitrix\Iblock\Filter\SeoTable::add([
    'IBLOCK_ID' => CATALOG_IBLOCK_ID,
    'SECTION_ID' => 0,
    'CONDITION' => json_encode([
        'PROPERTY_BRAND' => ['APPLE'],
    ]),
    'URL' => '/catalog/smartphones/apple/',
    'TITLE' => 'Apple smartphones — buy in our store',
    'DESCRIPTION' => 'Catalog of Apple smartphones: all iPhone generations.',
    'H1' => 'Apple Smartphones',
    'KEYWORDS' => 'buy apple smartphone, iphone price',
]);

This method gives full control: you can programmatically generate SEO pages for thousands of combinations.

Canonical URLs and Duplication

The main SEO issue with filters is content duplication. A page /catalog/smartfony/ with a filter applied and without it should have a correct canonical URL.

// In the page template
$filterHasValues = !empty($_GET['arrFilter_p1_BRAND']) || !empty($_GET['PRICE_1_MIN']);
if ($filterHasValues) {
    $seoUrl = getSeoUrlForCurrentFilter();
    $canonicalUrl = $seoUrl ?: '/catalog/smartfony/';
} else {
    $canonicalUrl = $currentPageUrl;
}
$APPLICATION->SetPageProperty('canonical', $canonicalUrl);

// In header.php
if ($canonical = $APPLICATION->GetPageProperty('canonical')): ?>
<link rel="canonical" href="<?= htmlspecialchars($canonical) ?>">
<?php endif; ?>

For unrecognized filter combinations, set the meta tag noindex, nofollow.

How to set up robots.txt for the filter

To block trash URLs with parameters from search indexing, block them:

User-agent: *
Disallow: /*?arrFilter*
Disallow: /*?PRICE_1*
Disallow: /*?arrFilter_*
# Allow SEO filter pages
Allow: /catalog/smartfony/apple/
Allow: /catalog/smartfony/samsung/

What to do with pagination on SEO filter pages

Proper pagination (rel=next/prev) for filter pages:

$baseUrl = getSeoUrlForCurrentFilter() ?: $APPLICATION->GetCurDir();
if ($currentPage > 1) {
    $prevUrl = $currentPage == 2 ? $baseUrl : $baseUrl . 'page/' . ($currentPage - 1) . '/';
    $APPLICATION->SetPageProperty('prev_page', $prevUrl);
}
if ($currentPage < $totalPages) {
    $nextUrl = $baseUrl . 'page/' . ($currentPage + 1) . '/';
    $APPLICATION->SetPageProperty('next_page', $nextUrl);
}

What's included in the SEO URL setup service

We offer a comprehensive turnkey setup:

• Current state audit — analysis of existing filter URLs, duplicates, indexing, canonical errors.
• URL structure design — development of human-readable URL scheme for all significant filter combinations.
• Automatic template configuration — create rules in the admin panel for 3–5 key properties.
• Canonical marking — correct setup on all filter pages (both with SEO URLs and without).
• robots.txt and noindex setup — block trash parameters from indexing, allow human-readable URLs.
• Pagination — implement rel=next/prev for filter pages.
• Documentation — description of all settings, instructions for content managers.
• Training — show how to add new SEO rules in the future.

Execution time

Basic setup of SEO templates for 3–5 properties and canonical configuration — 4–8 hours. Comprehensive setup with manual URLs for top combinations, robots.txt, pagination, and indexing monitoring — 1–2 business days. According to 1C-Bitrix documentation, SEO URLs for smart filter are supported starting from version 17.0.0.

Trust the setup to professionals

Our team has 5 years of experience with the platform and more than 50 completed projects on SEO filters. We guarantee proper indexing — no duplicates or canonical errors. Traffic growth averages 30–50% after setup. The cost of one lost customer due to non-indexable pages can reach $45–65, so the investment in setup pays off in 1–2 months.

Contact us to discuss your project and get a consultation. Order SEO-friendly URL setup — your catalog will start driving traffic in a week.