How to modify title tag in a plugin?

What I actually ended up doing was to use filter document_title_parts.
https://developer.wordpress.org/reference/hooks/document_title_parts/

I just unshifted a value to the array. I don’t think the documentation actually is very clear about that.

And this method still don’t work with Yoast SEO installed.

Related Posts:

  1. REQUIRED: The theme must not used the tags. | REQUIRED: The theme must not call to wp_title()
  2. How to set custom title of custom page template?
  3. Include category title in wp_title
  4. Get wp_title() from page ID into a variable
  5. How can i remove JUST the title tag from wp_head() function?
  6. Change all Post titles into [Title Case] format
  7. How to modify a title tag in genesis?
  8. How to Change The Title in WordPress For SEO
  9. change title separator
  10. Change page title dynamically before header is rendered
  11. Why is a category/ tag name prefixed to title of every page?
  12. Where does Yoast SEO plugin sets the site/page title?
  13. After I set the title, it over-wrote all the titles for the individual pages
  14. Replace text in the Title
  15. Title tags show twice
  16. How to solve the site tag being displayed twice?
  17. disallow publish posts with special title
  18. Need help with page title (Static front page)
  19. Title tag on home using front-page template not showing
  20. How to get page title () in a different order?
  21. Reorder title tag and description tag with wpseo_title and wpseo_metadesc
  22. What change does this code need to include title of parent?
  23. Change Bookmark Name without Changing TITLE Tag [closed]
  24. Using php to overwrite or replace title tag, while using yoast [closed]
  25. Limit the word count in the post title
  26. Problem in wordpress with “-“
  27. order by second word in title?
  28. the_title filter applying to menu items
  29. Modify page title format (when using title-tag)
  30. Fill post titles from post content?
  31. Display post title on individual image attachment page
  32. Automatically add title attribute to links in WordPress
  33. Custom Post Type Title Placeholder [duplicate]
  34. Site title not showing. What can I do?
  35. Change title tag dynamically or within plugin?
  36. Get title of page from URL
  37. How to Change Title Attribute to be different from Page title
  38. How to sanitize post title with commas
  39. How to echo a different title to the page if it’s opened on an android mobile phone
  40. Adding schema.org itemprop to WP4.1 Title Tag
  41. Remove post title
  42. Woocommerce: How to remove page title from storefront theme homepage
  43. How to Customize “WordPress > Error” Text in Titlebar?
  44. How to insert icon in site title
  45. How can I automatically insert the page content as the title?
  46. Changing title & add Breadcrumbs
  47. Sanitize the output of the_title() or the_title_attribute() to remove whitespace
  48. Blog Title not showing up on main Blog page
  49. For better digital journalism, how to store a second title and excerpt?
  50. Keep Title and Description always
  51. Automated Footer information
  52. Setting page title and keywords from PHP code
  53. Anyway to specify what should appear in in .php file?
  54. Theme support title tag – how to replace the default WP separator (with a filter)?
  55. Print post title with markup
  56. Homepage meta title and description not showing in search engines?
  57. How to remove Title and CSS styling of title from particular page
  58. Double bar “|” in title (By WP SEO Yoast?) [closed]
  59. Delete a repeated part of post title in WordPress
  60. How to add publish date in the title
  61. How to put post title or keyphrase in content on different places automatically?
  62. How to give titles to custom post type as “unique” incremental number?
  63. Front page displays different than all other pages?
  64. How to disable publish button if post title exists
  65. Change auto post title generation according to different post properties
  66. How to get Title of Home Page to Appear on Page
  67. Array to modify post titles
  68. How do I remove ‘Home’ from homepage title?
  69. How to set “lang” attribute for post/page title?
  70. Inconsistent title for posts
  71. Title don’t function as link
  72. Enclose title within a div?
  73. Title how does page no work in Twenty Eleven
  74. Change post title but not in widgets/menu/etc
  75. how to change the title of tag page?
  76. how to add dynamic text before and after of post title
  77. Add text to the first “title”=>get_the_title($post->ID), and shorten
  78. Modify WordPress Page Title ()
  79. Post title not displaying as recorded in the wp_posts table
  80. long-title posts do not want published
  81. Please I want to prefix my WP posts title according to each category
  82. Page Title Dependant On Input?
  83. “Page Array” displaying in title bar on Front Page
  84. Blog Post Title apearing twice
  85. Setting Page Title Yoast
  86. my site show this symbol (::) between site title and tagline
  87. How to Implement Category.php page title in wordpress custom template?
  88. Display tab title as ‘blog tagline | blog title’
  89. Different titles for static, posts, and every xy page
  90. The entity “raquo” was referenced, but not declared
  91. How to get the meta title of a page configured as blog (loop)
  92. Generate page title tag from the content of H1
  93. My post titles is getting mashed up with my blog title
  94. What is the wordpress page title php code?
  95. How to add … after a particular word/character limit to the title
  96. Remove post title in catogory page
  97. How can I change tagline in title tag “Just another wordpress site”?
  98. Show page name in browser
  99. I have a problem with Home Page title
  100. Trying to get more space removed from my header