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OnPage API Duplicate Tags

‌‌
This endpoint returns a list of pages that contain duplicate title or description tags. The response also contains data related to page performance.

Instead of ‘login’ and ‘password’ use your credentials from https://app.dataforseo.com/api-dashboard

<?php
// You can download this file from here https://cdn.dataforseo.com/v3/examples/php/php_RestClient.zip
require('RestClient.php');
$api_url = 'https://api.dataforseo.com/';
// Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-dashboard
$client = new RestClient($api_url, null, 'login', 'password');

$post_array = array();
// simple way to get a result
$post_array[] = array(
   "id" => "07281559-0695-0216-0000-c269be8b7592",
   "type" => "duplicate_description",
   "limit" => 10
);
try {
   // POST /v3/on_page/duplicate_tags
   // the full list of possible parameters is available in documentation
   $result = $client->post('/v3/on_page/duplicate_tags', $post_array);
   print_r($result);
   // do something with post result
} catch (RestClientException $e) {
   echo "\n";
   print "HTTP code: {$e->getHttpCode()}\n";
   print "Error code: {$e->getCode()}\n";
   print "Message: {$e->getMessage()}\n";
   print  $e->getTraceAsString();
   echo "\n";
}

$client = null;
?>

The above command returns JSON structured like this:

{
  "version": "0.1.20210129",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "1.4464 sec.",
  "cost": 0,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "07281559-0695-0216-0000-c269be8b7592",
      "status_code": 20000,
      "status_message": "Ok.",
      "time": "1.3477 sec.",
      "cost": 0,
      "result_count": 1,
      "path": [
        "v3",
        "on_page",
        "duplicate_tags"
      ],
      "data": {
        "api": "on_page",
        "function": "duplicate_tags",
        "type": "duplicate_description",
        "limit": 10
      },
      "result": [
        {
          "crawl_progress": "finished",
          "crawl_status": {
            "max_crawl_pages": 10,
            "pages_in_queue": 0,
            "pages_crawled": 10
          },
          "total_pages_count": 12,
          "pages_count": 10,
          "items_count": 1,
          "items": [
            {
              "accumulator": "Encuentra el regalo hecho a mano perfecto, prendas vintage y de tendencia, joyería única y más... muchísimo más.",
              "total_count": 2,
              "pages": [
                {
                  "resource_type": "html",
                  "status_code": 200,
                  "location": null,
                  "url": "https://www.etsy.com/mx/",
                  "meta": {
                    "title": "Etsy - Compra regalos hechos a mano, vintage, personalizados y únicos para todo el mundo",
                    "charset": 65001,
                    "follow": true,
                    "generator": null,
                    "htags": {
                      "h1": [
                        "Tu configuración de privacidad de Etsy",
                        "Encuentra cosas que te enamoren. Apoya a vendedores independientes. Solo en Etsy.",
                        "Actualiza tu configuración"
                      ],
                      "h3": [
                        "Configuración de la privacidad",
                        "Una comunidad única en su especie",
                        "Apoya a creadores independientes",
                        "Tranquilidad absoluta",
                        "Compra",
                        "Vende",
                        "Sobre Etsy",
                        "Ayuda"
                      ],
                      "h2": [
                        "Cookies y tecnologías obligatorias",
                        "Personalización del sitio",
                        "Publicidad personalizada",
                        "Descubrimientos para el día a día",
                        "Descubre una selección de artículos únicos",
                        "Nuestra selección",
                        "Nuestra selección",
                        "¿Qué es Etsy?",
                        "Pie de página"
                      ],
                      "h4": [
                        "¿Alguna pregunta? Encuentra aquí las respuestas a tus preguntas."
                      ]
                    },
                    "description": "Encuentra el regalo hecho a mano perfecto, prendas vintage y de tendencia, joyería única y más... muchísimo más.",
                    "favicon": "https://www.etsy.com/images/favicon.ico",
                    "meta_keywords": null,
                    "canonical": "https://www.etsy.com/mx/",
                    "internal_links_count": 73,
                    "external_links_count": 3,
                    "inbound_links_count": 24,
                    "images_count": 12,
                    "images_size": 209895,
                    "scripts_count": 7,
                    "scripts_size": 281845,
                    "stylesheets_count": 3,
                    "stylesheets_size": 95776,
                    "title_length": 88,
                    "description_length": 112,
                    "render_blocking_scripts_count": 4,
                    "render_blocking_stylesheets_count": 31,
                    "cumulative_layout_shift": 0.10156329069412295,
                    "content": {
                      "plain_text_size": 8077,
                      "plain_text_rate": 0.05434775294885511,
                      "plain_text_word_count": 1155,
                      "automated_readability_index": 20.769094905094903,
                      "coleman_liau_readability_index": 9.494734111543448,
                      "dale_chall_readability_index": 11.57178887778888,
                      "flesch_kincaid_readability_index": 6.1773626373626485,
                      "smog_readability_index": 27.996756024520007,
                      "description_to_content_consistency": 0.5625,
                      "title_to_content_consistency": 0.7142857313156128,
                      "meta_keywords_to_content_consistency": null
                    },
                    "deprecated_tags": null,
                    "duplicate_meta_tags": [
                      "description",
                      "viewport"
                    ],
                    "spell": null,
                    "resource_errors": {
                      "errors": [
                        {
                          "line": 877,
                          "message": "The closing tag and the currently open tag do not match."
                        },
                        {
                          "line": 878,
                          "message": "The closing tag and the currently open tag do not match."
                        },
                        {
                          "line": 880,
                          "message": "The closing tag and the currently open tag do not match."
                        },
                        {
                          "line": 882,
                          "message": "The closing tag and the currently open tag do not match."
                        },
                        {
                          "line": 1227,
                          "message": "Character reference is not terminated by a semicolon."
                        },
                        {
                          "line": 1227,
                          "message": "Character reference is not terminated by a semicolon."
                        },
                        {
                          "line": 1227,
                          "message": "Character reference is not terminated by a semicolon."
                        },
                        {
                          "line": 1227,
                          "message": "Character reference is not terminated by a semicolon."
                        },
                        {
                          "line": 1227,
                          "message": "Character reference is not terminated by a semicolon."
                        }
                      ],
                      "warnings": [
                        {
                          "line": 0,
                          "message": "Has node with more than 60 childs."
                        }
                      ]
                    },
                    "social_media_tags": {
                      "fb:app_id": "89186614300",
                      "og:site_name": "Etsy",
                      "og:locale": "es_ES",
                      "og:title": "Etsy - Compra regalos hechos a mano, vintage, personalizados y únicos para todo el mundo",
                      "og:description": "Encuentra el regalo hecho a mano perfecto, prendas vintage y de tendencia, joyería única y más... muchísimo más."
                    }
                  },
                  "page_timing": {
                    "time_to_interactive": 872,
                    "dom_complete": 1007,
                    "largest_contentful_paint": 1648.4750006347895,
                    "first_input_delay": 0.0550001859664917,
                    "connection_time": 10,
                    "time_to_secure_connection": 22,
                    "request_sent_time": 0,
                    "waiting_time": 406,
                    "download_time": 1,
                    "duration_time": 439,
                    "fetch_start": 0,
                    "fetch_end": 439
                  },
                  "onpage_score": 88.36,
                  "total_dom_size": 2312840,
                  "custom_js_response": null,
                  "broken_resources": false,
                  "broken_links": false,
                  "duplicate_title": true,
                  "duplicate_description": true,
                  "duplicate_content": true,
                  "click_depth": 1,
                  "size": 148870,
                  "encoded_size": 33167,
                  "total_transfer_size": 34974,
                  "fetch_time": "2021-02-24 17:02:22 +00:00",
                  "cache_control": {
                    "cachable": false,
                    "ttl": 0
                  },
                  "checks": {
                    "no_content_encoding": false,
                    "high_loading_time": false,
                    "is_redirect": false,
                    "is_4xx_code": false,
                    "is_5xx_code": false,
                    "is_broken": false,
                    "is_www": true,
                    "is_https": true,
                    "is_http": false,
                    "high_waiting_time": false,
                    "no_doctype": false,
                    "canonical": true,
                    "no_encoding_meta_tag": true,
                    "no_h1_tag": false,
                    "https_to_http_links": false,
                    "has_html_doctype": true,
                    "size_greater_than_3mb": false,
                    "meta_charset_consistency": true,
                    "has_meta_refresh_redirect": false,
                    "has_render_blocking_resources": true,
                    "redirect_chain": false,
                    "low_content_rate": true,
                    "high_content_rate": false,
                    "low_character_count": false,
                    "high_character_count": false,
                    "small_page_size": false,
                    "large_page_size": false,
                    "low_readability_rate": true,
                    "irrelevant_description": false,
                    "irrelevant_title": false,
                    "irrelevant_meta_keywords": false,
                    "title_too_long": true,
                    "title_too_short": false,
                    "deprecated_html_tags": false,
                    "duplicate_meta_tags": true,
                    "duplicate_title_tag": false,
                    "no_image_alt": true,
                    "no_image_title": true,
                    "no_description": false,
                    "no_title": false,
                    "no_favicon": false,
                    "seo_friendly_url": false,
                    "flash": false,
                    "frame": false,
                    "lorem_ipsum": false,
                    "seo_friendly_url_characters_check": true,
                    "seo_friendly_url_dynamic_check": true,
                    "seo_friendly_url_keywords_check": false,
                    "seo_friendly_url_relative_length_check": true,
                    "is_orphan_page": false,
                    "is_link_relation_conflict": false,
                    "has_links_to_redirects": false,
                    "recursive_canonical": false,
                    "canonical_chain": false,
                    "canonical_to_redirect": false,
                    "canonical_to_broken": false
                  },
                  "content_encoding": "gzip",
                  "media_type": "text/html",
                  "server": "Apache",
                  "is_resource": false,
                  "last_modified": {
                    "header": "2021-10-21 14:11:10 +00:00",
                    "sitemap": null,
                    "meta_tag": "2021-03-15 00:00:00 +00:00"
                  }
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}

All POST data should be sent in the JSON format (UTF-8 encoding). The task setting is done using the POST method. When setting a task, you should send all task parameters in the task array of the generic POST array.

‌‌‌‌‌‌Description of the fields for setting a task:

Field name Type Description
id string ID of the task
required field
you can get this ID in the response of the Task POST endpoint
example:
“07131248-1535-0216-1000-17384017ad04”
type string duplicate tags type
required field
indicates the type of duplicate elements found on the pages. The results will depend on the type you specify
possible values: duplicate_title, duplicate_description
accumulator string tag value
optional field
specify a title or description here if you want to receive a list of duplicate pages that contains this tag
limit integer the maximum number of returned pages
optional field
default value: 100
maximum value: 1000
offset integer offset in the results array of returned pages
optional field
default value: 0
if you specify the 10 value, the first ten pages in the results array will be omitted and the data will be provided for the successive pages
tag string user-defined task identifier
optional field
the character limit is 255
you can use this parameter to identify the task and match it with the result
you will find the specified tag value in the data object of the response

‌‌‌‌‌‌
As a response of the API server, you will receive JSON-encoded data containing a tasks array with the information specific to the set tasks.

Description of the fields in the results array:

Field name Type Description
version string the current version of the API
status_code integer general status code
you can find the full list of the response codes here
Note: we strongly recommend designing a necessary system for handling related exceptional or error conditions
status_message string general informational message
you can find the full list of general informational messages here
time string execution time, seconds
cost float total tasks cost, USD
tasks_count integer the number of tasks in the tasks array
tasks_error integer the number of tasks in the tasks array returned with an error
tasks array array of tasks
        id string task identifier
unique task identifier in our system in the UUID format
        status_code integer status code of the task
generated by DataForSEO; can be within the following range: 10000-60000
you can find the full list of the response codes here
        status_message string informational message of the task
you can find the full list of general informational messages here
        time string execution time, seconds
        cost float cost of the task, USD
        result_count integer number of elements in the result array
        path array URL path
        data object contains the same parameters that you specified in the POST request
        result array array of results
            crawl_progress string status of the crawling session
possible values: in_progress, finished
            crawl_status object details of the crawling session
               max_crawl_pages integer maximum number of pages to crawl
indicates the max_crawl_pages limit you specified when setting a task
               pages_in_queue integer number of pages that are currently in the crawling queue
               pages_crawled integer number of crawled pages
            total_pages_count integer total number of pages with duplicate tags
displays the total number of pages with duplicate tags of the target website
            pages_count integer number of pages with duplicate tags in the response
displays the number of pages with duplicate tags returned in the response
            items_count integer number of items in the results array
            items array items array
              accumulator string contains the value of duplicated tag
              total_count integer total count of duplicate pages
              pages array pages with duplicate tags
              ‘html’ page
                       resource_type string type of the returned resource = ‘html’
                       status_code integer status code of the page
                       location string location header
indicates the URL to redirect a page to
                       url string page URL
                       meta object page properties
the value depends on the resource_type
                           title integer page title
                           charset integer code page
example: 65001
                           follow boolean indicates whether a page’s ‘meta robots’ allows crawlers to follow the links on the page
if false, the page’s ‘meta robots’ tag contains “nofollow” parameter instructing crawlers not to follow the links on the page
                           generator string meta tag generator
                           htags object HTML header tags
                           description string content of the meta description tag
                           favicon string favicon of the page
                           meta_keywords string content of the keywords meta tag
                           canonical string canonical page
                           internal_links_count integer number of internal links on the page
                           external_links_count integer number of external links on the page
                           inbound_links_count integer number of internal links pointing at the page
                           images_count integer number of images on the page
                           images_size integer total size of images on the page measured in bytes
                           scripts_count integer number of scripts on the page
                           scripts_size integer total size of scripts on the page measured in bytes
                           stylesheets_count integer number of stylesheets on the page
                           stylesheets_size integer total size of stylesheets on the page measured in bytes
                           title_length integer length of the title tag in characters
                           description_length integer length of the description tag in characters
                           render_blocking_scripts_count integer number of scripts on the page that block page rendering
                           render_blocking_stylesheets_count integer number of CSS styles on the page that block page rendering
                           cumulative_layout_shift float Core Web Vitals metric measuring the layout stability of a page
measures the sum total of all individual layout shift scores for every unexpected layout shift that occurs during the entire lifespan of the page. Learn more.
                           content object overall information about content of the page
                               plain_text_size integer total size of the text on the page measured in bytes
                               plain_text_rate integer plaintext rate value
plain_text_size to size ratio
                               plain_text_word_count float number of words on the page
                               automated_readability_index float Automated Readability Index
                               coleman_liau_readability_index float Coleman–Liau Index
                               dale_chall_readability_index float Dale–Chall Readability Index
                               flesch_kincaid_readability_index float Flesch–Kincaid Readability Index
                               smog_readability_index float SMOG Readability Index
                               description_to_content_consistency float consistency of the meta description tag with the page content
measured from 0 to 1
                               title_to_content_consistency float consistency of the meta title tag with the page content
measured from 0 to 1
                               meta_keywords_to_content_consistency float consistency of meta keywordstag with the page content
measured from 0 to 1
                           deprecated_tags array deprecated tags on the page
                           duplicate_meta_tags array duplicate meta tags on the page
                           spell object spellcheck
hunspell spellcheck errors
                               hunspell_language_code string spellcheck language code
                               misspelled array array of misspelled words
                                   word string misspelled word
                           resource_errors object resource errors and warnings
                               errors array resource errors
                                   line integer line where the error was found
                                   message string text message of the error
the full list of possible HTML errors can be found here
                               warnings array resource warnings
                                   line integer line the warning relates to
note that if "line": 0, the warning relates to the whole page
                                   message string text message of the warning
possible messages:
"Has node with more than 60 childs." – HTML page has at least 1 tag nesting over 60 tags of the same level
"Has more that 1500 nodes." – DOM tree contains over 1,500 elements
"HTML depth more than 32 tags." – DOM depth exceeds 32 nodes
                           social_media_tags object object of social media tags found on the page
contains social media tags and their content
supported tags include but are not limited to Open Graph and Twitter card
                       page_timing object array of page load metrics
                           time_to_interactive integer Time To Interactive (TTI) metric
the time it takes until the user can interact with a page (in milliseconds)
                           dom_complete integer time to load resources
the time it takes until the page and all of its subresources are downloaded (in milliseconds)
                           largest_contentful_paint float Core Web Vitals metric measuring how fast the largest above-the-fold content element is displayed
The amount of time (in milliseconds) to render the largest content element visible in the viewport, from when the user requests the URL. Learn more.
                           first_input_delay float Core Web Vitals metric indicating the responsiveness of a page
The time (in milliseconds) from when a user first interacts with your page to the time when the browser responds to that interaction. Learn more.
                           connection_time integer time to connect to a server
the time it takes until the connection with a server is established (in milliseconds)
                           time_to_secure_connection integer time to establish a secure connection
the time it takes until the secure connection with a server is established (in milliseconds)
                           request_sent_time integer time to send a request to a server
the time it takes until the request to a server is sent (in milliseconds)
                           waiting_time integer time to first byte (TTFB) in milliseconds
                           download_time integer time it takes for a browser to receive a response (in milliseconds)
                           duration_time integer total time it takes until a browser receives a complete response from a server (in milliseconds)
                           fetch_start integer time to start downloading the HTML resource
the amount of time the browser needs to start downloading a page
                           fetch_end integer time to complete downloading the HTML resource
the amount of time the browser needs to complete downloading a page
                       onpage_score float shows how page is optimized on a 100-point scale
this field shows how page is optimized considering critical on-page issues and warnings detected;
100 is the highest possible score that means the page does not have any critical on-page issues and important warnings;
learn more about how the metric is calculated in this help center article
                       total_dom_size integer total DOM size of a page
                       custom_js_response string/object/integer the result of executing a specified JS script
note that you should specify a custom_js field when setting a task to receive this data and the field type and its value will totally depend on the script you specified;
                       broken_resources boolean indicates whether a page contains broken resources
                       broken_links boolean indicates whether a page contains broken links
                       duplicate_title boolean indicates whether a page has duplicate title tags
                       duplicate_description boolean indicates whether a page has a duplicate description
                       duplicate_content boolean indicates whether a page has duplicate content
                       click_depth integer number of clicks it takes to get to the page
indicates the number of clicks from the homepage needed before landing at the target page
                       size integer resource size
indicates the size of a given page measured in bytes
                       encoded_size integer page size after encoding
indicates the size of the encoded page measured in bytes
                       total_transfer_size integer compressed page size
indicates the compressed size of a given page
                       fetch_time string date and time when a resource was fetched
in the UTC format: “yyyy-mm-dd hh-mm-ss +00:00”
example:
2019-11-15 12:57:46 +00:00
                       cache_control object instructions for caching
                          cachable boolean indicates whether the page is cacheable
                          ttl integer time to live
the amount of time the browser caches a resource
                       checks object website checks
on-page check-ups related to the page
                          no_content_encoding boolean page with no content encoding
indicates whether a page has no compression algorithm of the content
                          high_loading_time boolean page with high loading time
indicates whether a page loading time exceeds 3 seconds
                          is_redirect boolean page with redirects
indicates whether a page has 3XX redirects to other pages
                          is_4xx_code boolean page with 4xx status codes
indicates whether a page has 4xx response code
                          is_5xx_code boolean page with 5xx status codes
indicates whether a page has 5xx response code
                          is_broken boolean broken page
indicates whether a page returns a response code less than 200 or greater than 400
                          is_www boolean page with www
indicates whether a page is on a www subdomain
                          is_https boolean page with the https protocol
                          is_http boolean page with the http protocol
                          high_waiting_time boolean page with high waiting time
indicates whether a page waiting time (aka Time to First Byte) exceeds 1.5 seconds
                          no_doctype boolean page with no doctype
indicates whether a page is without the <!DOCTYPE HTML> declaration
                          canonical boolean page is canonical
                          no_encoding_meta_tag boolean page with no meta tag encoding
indicates whether a page is without Content-Type
informative only if the encoding is not explicit in the Content-Type header
for example: Content-Type: "text/html; charset=utf8"
                          no_h1_tag boolean page with empty or absent h1 tags
                          https_to_http_links boolean HTTPS page has links to HTTP pages
if true, this HTTPS page has links to HTTP pages
                          has_html_doctype boolean page with HTML doctype declaration
if true, the page has HTML DOCTYPE declaration
                          size_greater_than_3mb boolean page with size larger than 3 MB
if true, the page size is exceeding 3 MB
                          meta_charset_consistency boolean page with meta charset tag
if true, the page has meta charset tag that sets character encoding for this page
                          has_meta_refresh_redirect boolean pages with meta refresh redirect
if true, the page has <meta http-equiv=”refresh”> tag that instructs a browser to load another page after a specified time span
                          has_render_blocking_resources boolean page with render-blocking resources
if true, the page has render-blocking scripts or stylesheets
                          redirect_chain boolean page with multiple redirects
if true, there were at least two redirects before our crawler reached this page
                          low_content_rate boolean page with low content rate
indicates whether a page has the plaintext size to page size ratio of less than 0.1
                          high_content_rate boolean page with high content rate
indicates whether a page has the plaintext size to page size ratio of more than 0.9
available for canonical pages only
                          low_character_count boolean indicates whether the page has less than 1024 characters
                          high_character_count boolean indicates whether the page has more than 256,000 characters
                          small_page_size boolean indicates whether a page is too small
the value will be true if a page size is smaller than 1024 bytes
                          large_page_size boolean indicates whether a page is too heavy
the value will be true if a page size exceeds 1 megabyte
                          low_readability_rate boolean page with a low readability rate
indicates whether a page is scored less than 15 points on the Flesch–Kincaid readability test
                          irrelevant_description boolean page with irrelevant description
indicates whether a page description tag is irrelevant to the content of a page
the relevance threshold is 0.2
available for canonical pages only
                          irrelevant_title boolean page with irrelevant title
indicates whether a page title tag is irrelevant to the content of the page
the relevance threshold is 0.3
available for canonical pages only
                          irrelevant_meta_keywords boolean page with irrelevant meta keywords
indicates whether a page keywords tags are irrelevant to the content of a page
the relevance threshold is 0.6
available for canonical pages only
                          title_too_long boolean page with a long title
indicates whether the content of the title tag exceeds 65 characters
                          title_too_short boolean page with short titles
indicates whether the content of title tag is shorter than 30 characters
                          deprecated_html_tags boolean page with deprecated tags
indicates whether a page has deprecated HTML tags
                          duplicate_meta_tags boolean page with duplicate meta tags
indicates whether a page has more than one meta tag of the same type
available for canonical pages only
                          duplicate_title_tag boolean page with more than one title tag
indicates whether a page has more than one title tag
                          no_image_alt boolean images without alt tags
                          no_image_title boolean images without title tags
                          no_description boolean pages with no description
indicates whether a page has an empty or absent description meta tag
available for canonical pages only
                          no_title boolean page with no title
indicates whether a page has an empty or absent title tag
                          no_favicon boolean page with no favicon
                          seo_friendly_url boolean page with seo-frienldy URL
the ‘SEO-friendliness’ of a page URL is checked by four parameters:
– the length of the relative path is less than 120 characters
– no special characters
– no dynamic parameters
– relevance of the URL to the page
if at least one of them is failed then such URL is considered as not ‘SEO-friendly’
the data is available for canonical pages only
                          flash boolean page with flash
indicates whether a page has flash elements
                          frame boolean page with frames
indicates whether a page contains frame, iframe, frameset tags
                          lorem_ipsum boolean page with lorem ipsum
indicates whether a page has lorem ipsum content
                          has_misspelling boolean page with misspelled content
                          seo_friendly_url_characters_check boolean URL characters check-up
indicates whether a page URL containing only uppercase and lowercase Latin characters, digits and dashes
                          seo_friendly_url_dynamic_check boolean URL dynamic check-up
the value will be true if a page has no dynamic parameters in the url
                          seo_friendly_url_keywords_check boolean URL keyword check-up
indicates whether a page URL is consistent with the title meta tag
                          seo_friendly_url_relative_length_check boolean URL length check-up
the value will be true if a page URL no longer than 120 characters
                          is_orphan_page boolean page with no internal links pointing to it
true if the page has no reference from other pages of the domain
                          is_link_relation_conflict boolean mix of both followed and nofollowed incoming internal links
true if the page receives at least one link with the rel="nofollow" attribute and at least one dofollow link
                          has_links_to_redirects boolean page is pointing to a page that redirect elsewhere
true if the page is pointing to a page that responds with a 3XX redirect
                          recursive_canonical boolean recursive canonical error
true if the page contains rel="canonical" tag to another page, which in turn, refers back to the initial page
                          canonical_chain boolean pages with canonical pointing to a page that has a canonical pointing elsewhere
true if the page has a canonical link element pointing to a page that has a canonical pointing to a different page
e.g. page a is canonicalized to page b, which is canonicalized to page c
                          canonical_to_redirect boolean canonical page pointing to a page that redirect elsewhere
true if the page has a canonical link element pointing to a page that responds with a 3XX redirect
                          canonical_to_broken boolean canonical link pointing to a broken page
true if the page has a a canonical link pointing to a page that responds with a 4xx or 5xx response codes
                      content_encoding string type of encoding
                      media_type string types of media used to display a page
                      server string server version
                      is_resource boolean indicates whether a page is a single resource
                      last_modified object contains data on changes related to the resource
if there is no data, the value will be null
                        header string date and time when the header was last modified
in the UTC format: “yyyy-mm-dd hh-mm-ss +00:00”
example:
2019-11-15 12:57:46 +00:00
if there is no data, the value will be null
                        sitemap string date and time when the sitemap was last modified
in the UTC format: “yyyy-mm-dd hh-mm-ss +00:00”
example:
2019-11-15 12:57:46 +00:00
if there is no data, the value will be null
                        meta_tag string date and time when the meta tag was last modified
in the UTC format: “yyyy-mm-dd hh-mm-ss +00:00”
example:
2019-11-15 12:57:46 +00:00
if there is no data, the value will be null

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