How does the plugin header work?
WordPress scans every PHP file inside wp-content/plugins/ looking for this standard docblock format; whenever a file contains it, WordPress recognizes it as an installed plugin and lists it on the Plugins screen. The only field that is technically required is Plugin Name — every other header (Description, Version, Author, License, etc.) is optional, but when present it populates the description, version number, author link and license info shown on the Plugins screen.
Text Domain is a unique identifier used to group the plugin's translatable strings, and it must match exactly the slug passed to load_plugin_textdomain() (or used for auto-loaded translations on WordPress.org-hosted plugins). If it doesn't match, string translations (i18n) won't load and the interface stays in English (or the source language) regardless of the site's locale.
The if ( ! defined( 'ABSPATH' ) ) { exit; } guard at the bottom of the file prevents the file from being requested directly by URL, outside of WordPress core. The ABSPATH constant is only defined once WordPress has been loaded through wp-load.php, so when the file is hit directly this check fails and execution stops. It's a basic, well-known security practice expected in every WordPress plugin file.
When should you use WordPress Plugin Header Generator?
The KEYDAL WordPress Plugin Header Generator tool is a browser-based utility that developers, system administrators, SEO specialists and enterprise technology teams use in their daily operations. It requires no installation, is free, and produces results instantly. It is designed so local teams can run audits without connecting to server environments and run analyses without touching production.
Typical scenarios include: post-migration verification, comparing domain or hosting providers, diagnosing customer issues, security auditing (pre-pentest reconnaissance), root-cause analysis of email deliverability problems, validating CDN or proxy configuration, surfacing technical audit data for SEO teams, and rapid information gathering during incident response. You can copy results as text and share them or paste them into internal documentation.
The KEYDAL infrastructure team provides web hosting, VPS, dedicated server management, server hardening, DNS configuration and SSL/TLS deployment services from Türkiye. Beyond these tools, we deliver server setup and operations support across Hetzner, OVHcloud, Contabo, DigitalOcean and Turkish providers.
Your queries are never stored on our servers
KEYDAL tools run stateless: domain names, IPs, URLs or other inputs are not persisted to any database. Logs are kept only for security purposes (rate limiting, abuse detection) and deleted within 30 days. For tools that handle sensitive data (tokens, API keys, JWTs), processing happens entirely in your browser — nothing is sent over the network. See our Privacy Policy for details.
All tools run over HTTPS with TLS 1.3 support. KEYDAL is a Türkiye-based technology company and complies fully with local data-protection regulations (KVKK) and GDPR principles.
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The KEYDAL free tools collection includes DNS lookup, WHOIS lookup, SSL certificate checker, HTTP headers analyzer, IP geolocation, uptime checker, JSON formatter, JWT decoder, Base64 encode/decode, QR code generator, meta tag analyzer and robots.txt tester. All browser-based, free, no installation.
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