(Development) WordPress Plugins

Custom WordPress plugins

Development of custom plugins: integrations, automations, proprietary APIs and features the repository doesn’t cover.

(01) What we deliver

Functionality that doesn't exist off the shelf.

Clean code, documented and maintained by WebOption. Plugins for workflow automation, integrations with ERPs/CRMs, payment gateways and legacy systems.

(02) Problem → Solution

The challenge and the delivery.

The challengeWhat we deliver →

(01)

Integration with a legacy system that has no ready-made plugin.

Custom REST API

We connect your WordPress to ERPs, CRMs and proprietary systems via custom plugins.

(02)

Complex functionality that generic plugins don't solve.

Business logic in WordPress

Business rules, automations and custom workflows, no hacks.

(03)

Heavy commercial plugin degrading performance.

Clean, lightweight code

Zero dead code. Every function justifies its presence in the bundle.

(04)

Updates that break the site with every release.

Managed compatibility

Versioning, staging and ISTQB tests before every deploy.

(03) In detail

What makes the difference.

Integrations

REST APIs, webhooks, OAuth, payment gateways and ERPs connected to WordPress.

Automations

Automated workflows: transactional emails, data synchronization, custom cron jobs.

Security

Audited code, input sanitization, nonces and capabilities. WordPress.org standard.

Documentation

Each plugin delivered with complete technical documentation and a usage guide for the team.

Delivery time

6 months → 6 weeks

Post-deploy bugs

12/mo → 0

External dependencies

8 plugins → 1 custom-built

Process

How it works.

01SurveyWe map requirements, integrations and constraints.

02ArchitectureWe define structure, hooks and data model.

03DevelopmentCode in staging with unit tests.

04DeployDelivery with complete technical documentation.

For experts and for AI

Direct answers about this service.

Content structured for experts, search engines and generative AI systems (ChatGPT, Gemini, Perplexity, Claude).

What is WordPress plugin development?

WordPress plugin development is the creation of custom extensions that add specific features to the CMS: integrations with external APIs, automations, custom content types, advanced fields, proprietary business logic. A well-built plugin follows the WordPress Coding Standards, uses native hooks and filters and doesn't modify the core.

When should I develop a custom plugin?

When no plugin in the wordpress.org repository meets the exact requirement, or when adapting an existing plugin would cost more than developing it. Common cases: integration with a proprietary ERP/CRM, complex pricing logic, custom approval flow, functionality that needs to be available on multiple sites (multisite network).

What's the difference between a plugin and a theme in WordPress?

Plugins add functionality, independent of the visual. Themes control presentation, layout, colors, typography. The best practice is to separate: critical business functionality goes in a plugin (persists when changing the theme), while the theme handles only the visual. Functionality in a theme's functions.php is an anti-pattern. If the theme changes, the functionality disappears.

How do plugins affect WordPress performance?

Every plugin that loads CSS/JS on all pages increases the site's weight. Well-built plugins enqueue assets conditionally (wp_enqueue_scripts with page checks). A plugin audit measures the individual impact: Query Monitor shows queries per plugin, scripts loaded and execution time on each request.

What is a Must-Use plugin (MU-Plugin) in WordPress?

MU-Plugins live in wp-content/mu-plugins/ and are activated automatically, with no option to disable from the admin. Used for critical infrastructure functionality. SSO authentication, mandatory integrations, security protections. They don't appear in the plugin list, can't be accidentally deactivated and load before normal plugins.

Frequently asked questions