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<p><strong>Auto SKU Generator</strong> takes the hassle out of creating SKUs for your WooCommerce products. Instead of manually typing a SKU for every product, this plugin automatically generates structured, unique SKUs based on your product’s category and ID.</p>
<h4>How It Works</h4>
<p>When you create or save a WooCommerce product without a SKU, Auto SKU Generator automatically assigns one using a consistent format:</p>
<p><strong>[Prefix][Product ID][Suffix]</strong></p>
<ul>
<li>The <strong>prefix</strong> is derived from the product’s category ID (zero-padded to 3 digits) or a custom prefix you define per category.</li>
<li>The <strong>product ID</strong> portion is zero-padded to fill the remaining SKU length.</li>
<li>A trailing digit is appended to ensure uniqueness in case of collisions.</li>
</ul>
<h4>Features</h4>
<ul>
<li><strong>Automatic SKU assignment</strong> — Products saved without a SKU get one automatically.</li>
<li><strong>Two prefix modes</strong> — Use the category ID as a prefix, or define your own custom prefix for each category.</li>
<li><strong>Configurable SKU length</strong> — Set your preferred total SKU length between 8 and 20 characters.</li>
<li><strong>Live SKU preview</strong> — A suggested SKU appears below the SKU field on the product edit screen, updating in real time as you change categories.</li>
<li><strong>Click-to-insert</strong> — Click the suggested SKU to instantly populate the SKU field.</li>
<li><strong>Collision handling</strong> — If a generated SKU already exists, the plugin automatically tries alternative suffixes.</li>
<li><strong>Settings page</strong> — Configure everything from Products > Auto SKU Generator in your WordPress admin.</li>
<li><strong>Clean uninstall</strong> — All plugin data is removed when you delete the plugin.</li>
</ul>
<h4>Use Cases</h4>
<ul>
<li>Online stores with large product catalogs that need consistent SKU formatting.</li>
<li>Shops where multiple team members add products and you want standardized SKUs.</li>
<li>Stores migrating from another platform that need to establish a new SKU system.</li>
<li>Any WooCommerce store that wants to save time on manual SKU entry.</li>
</ul>
<h4>Requirements</h4>
<ul>
<li>WordPress 5.6 or higher</li>
<li>WooCommerce 5.0 or higher</li>
<li>PHP 7.4 or higher</li>
</ul>


RDP Auto SKU Generator

Automatically generate unique SKUs for WooCommerce products using category-based prefixes or custom prefixes you define.

Beka Rice

SkyVerge

<blockquote>
<p><strong>Requires: WooCommerce 3.9.4</strong> or newer</p>
</blockquote>
<p>Automatically generate a SKU for parent / simple products, variations, or both when the product is published or updated.</p>
<blockquote>
<p><strong>IMPORTANT:</strong> The SKU field will be disabled for SKUs being generated by the plugin. Your own previously created SKUs <strong>will be overridden</strong> if you update a product while generating SKUs, and they will change if you change your product slug (while using this to generate them). Be sure you want to complete automate SKUs if you leave this enabled all of the time.</p>
</blockquote>
<p>You can also selectively enable and disable the plugin if you don’t want to override existing SKUs when saving products. You can <a href="http://www.skyverge.com/product/woocommerce-product-sku-generator/" rel="nofollow ugc">view product documentation</a> for help.</p>
<h4>Automated SKUs</h4>
<p>SKUs for simple, external, or parent products can be generated from the product’s slug (hyphenated name) or ID. For example, a product with the slug <code>wp-tee-shirt</code> can have a SKU of <code>wp-tee-shirt</code> or <code>192</code> (whatever the product’s ID is). This SKU will be generated any time the product is published or updated.</p>
<p>If the product is a variable product, this plugin can also generate SKUs for the product variations if desired (these typically inherit the parent SKU). Variation SKUs can either append attribute slugs or variation IDs for each variation to the parent SKU.</p>
<p><a href="https://cldup.com/8UdEpry7Q4.png" rel="nofollow ugc">Here are some samples</a> of different SKU formats that can be created with this plugin.</p>
<p>You can also manually set simple / parent SKUs, or manually set the variation SKUs, if you don’t want the plugin to generate them for you.</p>
<h4>Features</h4>
<p>This plugin provides options to:</p>
<ul>
<li>automatically generate simple / parent product SKUs when the product is published or updated</li>
<li>generate simple / parent product SKUs using the product slug or ID</li>
<li>automatically generate SKUs for product variations when the product is published or updated</li>
<li>generate variation SKUs using the attribute slugs or variation ID</li>
<li>use the bulk product update action to easily force SKU generation for more than one product — handy to bulk-generate SKUs for products created before installing this plugin</li>
</ul>
<h4>SKUs for all product types</h4>
<p>The Product SKU Generator for WooCommerce lets you determine which SKUs should be generated automatically, and whether these SKUs should use product slugs or IDs. If a SKU is generated, the input for that SKU will be disabled since you cannot adjust it.</p>
<p>If you choose not to generate a SKU, then you can enter your own SKU. For example, if you only generate variation SKUs, then you can enter a parent product SKU. This will be used as the base for your generated variation SKUs, and slugs or IDs will be appended to it.</p>
<p>If you only create parent / simple SKUs, you will be able to manually create your own variation SKUs, as these will not be overridden by saving or updating a product.</p>
<h4>Bulk Updating</h4>
<p>You can bulk add SKUs to products that you’ve created prior to installing this plugin. If you select the products you want to update, then bulk edit them, all you have to do is hit “Update”. When the products are saved, SKUs will be generated for all products.</p>
<p>This action will also automatically generate the SKUs for product variations if you have them enabled.</p>
<h4>More Details</h4>
<ul>
<li>See the <a href="http://www.skyverge.com/product/woocommerce-product-sku-generator/" rel="nofollow ugc">product page</a> for full details and documentation</li>
<li>View more of SkyVerge’s <a href="https://profiles.wordpress.org/skyverge/" rel="nofollow ugc">free WooCommerce extensions</a></li>
<li>View all <a href="http://www.skyverge.com/shop/" rel="nofollow ugc">WooCommerce extensions</a> from SkyVerge</li>
</ul>
<h4>Translations</h4>
<p><strong>The plugin text domain is</strong>: <code>woocommerce-product-sku-generator</code></p>
<h4>Attribute Names</h4>
<p>By default, if you have an attribute name with a space (such as “Burnt Marshmallow” for color), the SKU will use this exact formatting. A SKU for this variation would look like: <code>parentSKU-Burnt Marshmallow</code></p>
<p>If you enable the setting to replace spaces, this will instead look like: <code>parentSKU-Burnt_Marshmallow</code> or <code>parentSKU-Burnt-Marshmallow</code> — depending on which setting you’ve chose. This is helpful if your external fulfillment service does not allow spaces in SKUs.</p>
<h4>Attribute Sorting</h4>
<p>In very rare cases, you may find that variation SKUs do not sort attributes in the same order. For example, one variation may be <code>tee-shirt-large-black</code>, and another could be <code>tee-shirt-black-medium</code>.</p>
<p>If this occurs, you can force attributes to sort themselves consistently before generating the SKU, which will resolve this problem. You could also consider this for new installations.</p>
<p><strong>Be sure you want to enable this</strong> if you have existing SKUs, as variation SKUs that were generated previously <em>could</em> be overridden while updating a product – they’ll be re-generated with the forced attribute order.</p>
<p>To force attribute sorting, add this code snippet where you add your site modifications, such as a custom plugin or theme’s functions.php:</p>
<pre><code>add_filter( 'wc_sku_generator_force_attribute_sorting', '__return_true' );
</code></pre>


Product SKU Generator for WooCommerce

Automatically generate WooCommerce product SKUs from the product / attribute slugs and/or IDs.

RDP Auto SKU Generator vs Product SKU Generator for WooCommerce