ProbonoSEO Basic

1.6.6

• Maintenance release

1.6.5

• Maintenance release

1.6.4

• Maintenance release

1.6.3

• Added llms.txt output for AI crawlers (an AI-era counterpart to robots.txt), auto-generated from site info and served at /llms.txt with an on/off toggle
• Reorganized the AIO admin tab as “AIO・LLMO・GEO最適化”, grouping the existing structured data features and the new llms.txt under an AI-search optimization heading (existing output unchanged)
• Updated the available-feature count to 75 to include the new llms.txt output (Basic + Pro totals adjusted accordingly)
• Documentation: the readme AI-search description and FAQ now reflect the llms.txt output (English and Japanese readmes aligned)

1.6.2

• Minor fixes

1.6.1

• Adjusted the fixed OGP image URL preview display, plus other minor refinements

1.6.0

• WordPress 7.0 compatibility
• Migrated Gutenberg sidebar registration from deprecated wp.editPost to the unified wp.editor package (works on WordPress 6.6+)
• Admin tab styles updated to follow WordPress admin theme CSS variables
• Removed unused legacy sidebar script

1.5.9

• Minor improvements.

1.5.8

• Minor wording adjustments.

1.5.8

• Enhanced: implemented CSS/JS minification for improved page speed and Core Web Vitals scores

1.5.7

• Improvement: user settings are now preserved across plugin reactivation (activation hook no longer resets saved options)
• Removed: non-functional CSS minification and JS minification toggles (were stubbed out and had no effect)
• Cleanup: removed unused stub files (breadcrumb-schema.php, prepublish-safety.php)

1.5.6

• Added AIO / AI Search Optimization features (expanded to 74 features)
• Added AI crawler permission via automatic robots.txt append
• Added FAQ Schema (FAQPage) output
• Added Article Schema output
• Added Organization Schema output

1.5.5

• Added manual tab to admin dashboard

1.5.4

• Fixed JavaScript localization variable name mismatch
• Improved Gutenberg sidebar stability

1.5.3

• SVN release fix

1.5.2

• Removed Pro license check code
• WordPress.org guideline compliance

1.5.1

• Stable tag alignment fix
• Text Domain correction for WordPress.org compliance

1.5.0

• WordPress.org Plugin Check full compliance
• PHPCS coding standards compliance
• Security-related code improvements

1.4.2

• WordPress 6.9 compatibility
• Plugin Check compliance (code quality improvements)

1.0.0

• Initial release
• 70 free features for Japanese SEO optimization