默认情况下,WordPress 上传图片需要手动“替代文本”(图片alt属性)添加内容, 可以通过下面的代码上传图片时,自动将图片名称添加到替“代文本”中,之前上传的图片也会自动添加图片名称为alt属性。
文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html
将代码添加到当前主题函数模板 functions.php 中:文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html
展开收缩
文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html
function dcwd_title_to_words( $title ) { // Sanitize the title: remove hyphens, underscores & extra spaces: $title = preg_replace( '%\s*[-_\s]+\s*%', ' ', $title ); // Sanitize the title: capitalize first letter of every word (other letters lower case): $title = ucwords( strtolower( $title ) ); return $title; } // Copied from: https://brutalbusiness.com/automatically-set-the-wordpress-image-title-alt-text-other-meta/ add_action( 'add_attachment', 'dcwd_set_image_meta_upon_image_upload' ); function dcwd_set_image_meta_upon_image_upload( $post_ID ) { // Check if uploaded file is an image, else do nothing if ( wp_attachment_is_image( $post_ID ) ) { $my_image_title = get_post( $post_ID )->post_title; $my_image_title = dcwd_title_to_words( $my_image_title ); // Create an array with the image meta (Title, Caption, Description) to be updated // Note: comment out the Excerpt/Caption or Content/Description lines if not needed $my_image_meta = array( 'ID' => $post_ID, // Specify the image (ID) to be updated 'post_title' => $my_image_title, // Set image Title to sanitized title // Damien: Omit setting the caption as I rarely use captions when I insert images. //'post_excerpt' => $my_image_title, // Set image Caption (Excerpt) to sanitized title 'post_content' => $my_image_title, // Set image Description (Content) to sanitized title ); // Set the image Alt-Text update_post_meta( $post_ID, '_wp_attachment_image_alt', $my_image_title ); // Set the image meta (e.g. Title, Excerpt, Content) wp_update_post( $my_image_meta ); } } // Enhanced version of: https://wordpress.org/plugins/automatic-image-alt-attributes/ add_filter('image_send_to_editor', 'dcwd_auto_alt_fix_1', 10, 2); function dcwd_auto_alt_fix_1($html, $id) { $image_title = get_the_title( $id ); $image_title = dcwd_title_to_words( $image_title ); return str_replace('alt=""','alt="' . $image_title . '"',$html); } add_filter('wp_get_attachment_image_attributes', 'dcwd_auto_alt_fix_2', 10, 2); function dcwd_auto_alt_fix_2($attributes, $attachment){ if ( !isset( $attributes['alt'] ) || '' === $attributes['alt'] ) { $attributes['alt'] = dcwd_title_to_words( get_the_title( $attachment->ID ) ); } return $attributes; } // From: https://mekshq.com/change-image-alt-tag-in-wordpress/ /* Replace alt attribute of post thumbnail with post title */ add_filter( 'post_thumbnail_html', 'meks_post_thumbnail_alt_change', 10, 5 ); function meks_post_thumbnail_alt_change( $html, $post_id, $post_thumbnail_id, $size, $attr ) { $post_title = get_the_title(); $html = preg_replace( '/(alt=")(.*?)(")/i', '$1'.esc_attr( $post_title ).'$3', $html ); return $html; }
文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html
Wordpress站长在发表文章时,往往不注意给图片添加说明(ALT),导致大量文章中的图像缺少 ALT属性,不利于SEO。...
6902
参考:文章源自知更鸟-https://zmingcx.com/wordpress-uploads-automatically-add-alt-attributes.html
- snippet that set the title, caption and description of an image as it is uploaded
- generates the alt when an image is added to the editor
- snippet that sets the alt attribute of the post thumbnail markup to the post title

我的微信
版权声明
本站原创文章转载请注明文章出处及链接,谢谢合作!
青海省海东市 1F
继承了吗