How can I add bigger image in my blog post?

Seems like you have fetched the thumbnail size image.

You can fetch/show the full image url that you have uploaded using 

$imgsrc = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), "full" );
$imgsrc = $imgsrc[0];
echo $imgsrc;

Hope that helps!!

Related Posts:

  1. Images in Blog List
  2. Featured Image Cetegory Not Shown In WordPress
  3. How do you cite the images on your blog? [closed]
  4. Automatically adding blog images to a portfolio/gallery
  5. How to change image type for specific size?
  6. What’s the proper way to find and remove duplicate images from posts and the media library?
  7. get_post_gallery with Gutenberg
  8. Mixed content warnings after changing site adress from HTTP to HTTPS
  9. add_image_size() zoom-crop
  10. Insert an image into a post by API
  11. Saving the pre-sanitized filename of an attachment as the Title or Caption
  12. Creating a rotating header /image slider using theme customization
  13. Add aditional class to get_avatar when showing image
  14. Use Media Library to manage galleries like Nextgen (with folders, albums, collections, tags, categories, terms…)
  15. Double thumbnails?
  16. No srcset for hard-cropped thumbnails
  17. Loop through child images of a parent for a Nivo Slider
  18. Slider image issue in wordpress
  19. Limit author image size
  20. Remove the http protocol from images
  21. Getting custom size image URL
  22. Retrieving images from a NextGEN gallery
  23. Query for recent images across multiple posts
  24. Getting alt text of featured image
  25. Get image alt attribute just by image URL
  26. Is there a way to get attachment data?
  27. How to resolve – IE 6 ignores img “width” properties
  28. WordPress is stripping the Alt tag’s quote marks from images where Alt is not set, but leaving the word ‘alt’ creating problems for ADA compliance
  29. WordPress reduces the full size image and uses it as the original
  30. Show taxonomy list with taxonomy images ( SOLVED)
  31. get_children() not working properly – Only on one post?
  32. Warning: getimagesize() [function.getimagesize]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 [closed]
  33. Is There A Way Of Using the_post_thumbnail() to Pull In A Specific Image From The Media Library
  34. How to add data attribute to all images in posts [closed]
  35. How to order images in a post in WordPress 3.3?
  36. Output random (custom) image size
  37. WordPress crops images differently on retina screens?
  38. Image thumbnails not available post migration, but still accessible via direct URL – DB issue
  39. Override img class in gallery
  40. How do I create an alternate RSS feed for tags with custom image sizes for MailChimp?
  41. Exclude images from “inserted into post” when trying to get attachments
  42. Set jpeg_quality for certain post-types
  43. WordPress automatically downscaled images larger that original
  44. Move Image Captions Inside Link ( tag) if Added
  45. Sharing images to social media – issue with aspect ratio
  46. How to add custom classes to figure element only if image has caption?
  47. I got an issue after i migrated a site
  48. How to add an image to a custom url?
  49. I want to use the GD image editor for just one function then switch back to ImageMagick
  50. How to add images to a post without inserting them into the content area of the post editor?
  51. Is it possible to reduce image filesize on the fly (when users enter my website)?
  52. add_image_size wont work after get_intermediate_image_sizes
  53. Why WordPress strips scr string from img tag off?
  54. Random image loader
  55. insert image alongwith with custom data via a frontend form
  56. Create a link to full-sized image attachment?
  57. Get image path : image is upload but not attached
  58. What sense makes medium_large_size_h => 0?
  59. after migration, newly uploaded images won’t show up
  60. Emoticons not working on my site
  61. How to use getimagesize() of image upload?
  62. limit number of images shown from gallery
  63. Graphics and Formatting Not Loading in WordPress on IIS
  64. How to Automatically import external images to Upload
  65. Alter the image used for a user who has not uploaded a custom image yet
  66. Fullscreen Page Background without Plugin [closed]
  67. Allow a specific user role I have created to only upload one image to his media library
  68. Implementing a modal(lightbox) for all images in all post-gallery posts
  69. how to regenerate webp et-pb-portfolio-image
  70. How do I avoid color distortion of uploaded images?
  71. Where to put code that customizes API
  72. When upload a PNG a noise appears in the thumbnails
  73. How to auto add image caption from image alt?
  74. How to stop TinyMce from converting image url into ?
  75. How to automatically load an image inside the post, since it is present in uploads folder
  76. Blog images not showing on homepage
  77. Generate links on all images in posts – is there a hook?
  78. Decide how Hero image appears on mobile
  79. Resize External Image
  80. Images are not getting uploaded
  81. Unable to delete images in Media Library
  82. Fatal error: Allowed memory size in PHP when allocating less
  83. Resized images not working – 404
  84. Background image call problem
  85. Assigning image to Post-Type won’t work anymore: exceeded time?
  86. How to specify image width and/or height attributes for images uploaded using WordPress uploader
  87. How to change default image rename?
  88. Upload unnattached image from frontend
  89. Link images to post
  90. Image attachement management – a philosophical question
  91. wp_get_attachment_link() add rel attribute if the link points to direct image
  92. Getting top Image From the Gallery and printing out a thumbnail with Exact Dimensions
  93. Add custom version to an image
  94. How to get some information from the_content [closed]
  95. Custom Background Image per Page
  96. How to add a link to media file for every image inserted in content?
  97. Blurry Images on my Website
  98. Define how an attached image is rendered
  99. All WordPress Website Images Broken
  100. Why are my image dimensions smaller once they are published?