ProbonoSEO Basic

Changelog

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

Plugin Website
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Version:
1.6.6
Last Updated
June 26, 2026
Requires
WordPress 6.0
Tested Up To
WordPress 7.0
Requires PHP
7.4

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