Powerful CSV/XLSX importer for WordPress. Import posts, pages, custom post types with an intuitive wizard interface and rollback capability.

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Sigma ImportX Engine is a professional data import plugin for WordPress. Whether you’re migrating from another CMS, importing a product catalog, or doing a bulk content upload, Sigma ImportX handles it reliably through an intuitive step-by-step wizard.
Upload your file, map your columns to WordPress fields, configure your settings, and import — all without writing a single line of code. Every import is logged and can be rolled back instantly if something goes wrong.
<h4>Key Features</h4>
<ul>
<li>Multi-Format Support — Import CSV, XLSX, XML, and TXT files with automatic delimiter and encoding detection</li>
<li>Drag & Drop Upload — Upload files instantly with in-browser preview and validation before processing</li>
<li>Smart Field Mapping — Visual mapper with auto-detection; add custom post meta fields on the fly</li>
<li>Template System — Save and reuse field mapping configurations across multiple imports</li>
<li>Three Import Modes — Create new records, update existing ones, or upsert (create or update automatically)</li>
<li>Real-Time Progress — Live progress bar and detailed per-row log during import</li>
<li>Import History — Full audit trail of every import run with timestamps and row counts</li>
<li>One-Click Rollback — Revert any import completely from the Import History screen</li>
<li>Background Processing — Large files are chunked and processed without hitting PHP timeouts</li>
<li>Data Validation — Catch formatting errors and missing required fields before the import runs</li>
<li>Custom Post Types — Works with any registered post type, including those added by themes or plugins</li>
<li>Dashboard Overview — Visual summary of import statistics and recent activity</li>
<li>No External Dependencies — No paid add-ons, no third-party services, no data leaves your server</li>
<li>Translation Ready — Fully internationalized with standard WordPress i18n</li>
</ul>
<h4>Who Is This For?</h4>
<ul>
<li>Content Managers — Bulk import or update large content libraries without developer help</li>
<li>Developers & Agencies — Migrate client data into new WordPress sites cleanly and repeatably</li>
<li>E-commerce Operators — Import product catalogs including custom fields and metadata</li>
<li>Site Builders — Quickly seed development or staging environments with real data</li>
</ul>
<h4>How It Works</h4>
The 5-step import wizard guides you through the entire process:
<ol>
<li>Upload — Drag and drop or browse to select your CSV, XLSX, XML, or TXT file</li>
<li>Preview — Review a sample of your data and confirm it was parsed correctly</li>
<li>Map Fields — Assign each column to a WordPress field or custom meta key</li>
<li>Configure — Choose post type, import mode, and post status</li>
<li>Import — Watch the progress in real time and review the detailed results log</li>
</ol>
When the import is done, it is recorded in Import History. If anything looks wrong, roll it back with one click.
<h3>Additional Information</h3>
<h4>System Requirements</h4>
Minimum 
* WordPress 5.8 
* PHP 7.4 
* MySQL 5.6 or MariaDB 10.0
Recommended 
* WordPress 6.0 or higher 
* PHP 8.0 or higher 
* MySQL 5.7 or MariaDB 10.3 
* 256MB PHP memory limit 
* 300 second max execution time 
* 64MB upload max filesize
<h4>Developer Reference</h4>
Namespace: <code>SigmaImportX</code>
Available Hooks:
<ul>
<li><code>sie_before_import</code> — Fires before an import run begins</li>
<li><code>sie_after_import</code> — Fires after an import run completes</li>
<li><code>sie_import_row</code> — Filter applied to each row during processing</li>
<li><code>sie_field_mapping</code> — Filter applied to the field mapping configuration</li>
</ul>
Custom Database Tables:
<ul>
<li><code>{prefix}_sie_imports</code> — Import run history and metadata</li>
<li><code>{prefix}_sie_import_logs</code> — Per-row import log entries</li>
<li><code>{prefix}_sie_templates</code> — Saved field mapping templates</li>
</ul>
Architecture: Object-oriented with PSR-4 autoloading. No external library dependencies.
<h4>Privacy</h4>
Sigma ImportX Engine does not collect, transmit, or store any user data outside your own WordPress database. It does not use cookies, external analytics, or remote license checks. Uploaded import files are stored temporarily in the WordPress uploads directory and removed automatically after processing.

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