Google Ads Transparency Center provides two datasets for free download:
creative_stats and removed_creative_stats. Both datasets fall under both the
Google Terms of Service (available at https://policies.google.com/terms) and the
Google Ads Transparency Center Additional Terms
(https://adstransparency.google.com/terms).

The datasets are also provided in a queryable format in our public dataset. The
public dataset page with additional info can be accessed at
https://console.cloud.google.com/marketplace/details/bigquery-public-data/google-ads-transparency-center

For a full description of the datasets provided and individual field
descriptions, please see the corresponding BigQuery schema definitions:

creative_stats: https://console.cloud.google.com/bigquery?ws=!1m5!1m4!4m3!1sbigquery-public-data!2sgoogle_ads_transparency_center!3screative_stats
removed_creative_stats: https://console.cloud.google.com/bigquery?ws=!1m5!1m4!4m3!1sbigquery-public-data!2sgoogle_ads_transparency_center!3sremoved_creative_stats

The data available for download may be sharded into multiple individual
JSON files for ease of download.

The following describes the columns provided in the dataset.

creative_stats

advertiser_id - A unique identifier for a specific advertiser
creative_id - A unique identifier for a specific ad
creative_page_url - A link to the relevant Ads Transparency Center page for this ad
ad_format_type - A description of the ad type
advertiser_disclosed_name - The advertiser's name for transparency reporting and disclosures
advertiser_legal_name - The legal name of the advertiser
advertiser_location - ISO 3166-2 region code (for example "FR" for France)
advertiser_verification_status - Whether or not the advertiser has verified their identity with Google yet
region_stats (top level) - Collection of regions in which the ad served (in the European Economic Area and Turkey) and their relevant stats
region_stats.region_code - ISO 3166-2 region code (for example "FR" for France) of the region where the ad was shown, or a text representation of an aggregate region (for example "EEA" for the European Economic Area)
region_stats.first_shown - YYYY-MM-DD representation of the first date the ad was shown. If the ad was first shown before March 1st, 2023, March 1st, 2023 will be reported as the first_shown date.
region_stats.last_shown - YYYY-MM-DD representation of the last date the ad was shown
region_stats.times_shown_end_date - YYYY-MM-DD representation of the date up to which times_shown (both upper and lower bounds) has been updated. This field is NULL if no impressions occured within the reporting period.
region_stats.times_shown_lower_bound - The lower bound of the number of times the ad was shown in the associated region. This field is NULL if no impressions occured within the reporting period.
region_stats.times_shown_upper_bound - The upper bound of the number of times the ad was shown in the associated region. This field is NULL if no impressions occured within the valid reporting period.
region_stats.times_shown_start_date - YYYY-MM-DD representation of the earliest date for which times_shown is considered (both upper and lower bounds). Impressions are reported for activity since March 1st, 2023. This field is NULL if no impressions occured with the reporting period.
region_stats.times_shown_availability_date - YYYY-MM-DD representation of the date on which impressions will become available if no impressions occurred within the reporting period. This field is NULL if impressions did occur within the reporting period.
audience_selection_approach_info (top level) - Information on audience selection, broken out by approach type. The available values are: "CRITERIA_INCLUDED" (Criteria from this category were included in the ad's audience), "CRITERIA_EXCLUDED" (Criteria from this category were excluded from the ad's audience), "CRITERIA_INCLUDED_AND_EXCLUDED" (Some criteria from this category were included and others were excluded from the ad's audience), and "CRITERIA_UNUSED" (Criteria from these categories were not used for audience selection).
audience_selection_approach_info.demographic_info - Describes if and how demographic info was used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.geo_location - Describes if and how geo location info was used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.contextual_signals - Describes if and how contextual signals were used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.customer_lists - Describes if and how customer lists were used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.topics_of_interest - Describes if and how topics of interest were used to select the ad audience (see audience_selection_approach_info above for more details)
topic - The topic of the ad
is_funded_by_google_ad_grants - Indicates whether the ad is funded by an in-kind donation through Google Ad Grants. This field is set to true if the advertiser is a recipient of a Google Ad Grants in-kind donation. Google ad Grants donates Search advertising to eligible organizations. Google does not endorse these ads.
ad_funded_by - The payer of the ad when different from the advertiser's disclosed name

removed_creative_stats

creative_page_url - A link to the removed Ads Transparency Center page for this ad
region_stats (top level) - Collection of regions in which the ad served (in the European Economic Area) and their relevant stats
region_stats.region_code - ISO 3166-2 region code (for example "FR" for France) of the region where the ad was shown, or a text representation of an aggregate region (for example "EEA" for the European Economic Area)
region_stats.first_shown - YYYY-MM-DD representation of the first date the ad was shown. If the ad was first shown before March 1st, 2023, March 1st, 2023 will be reported as the first_shown date
region_stats.last_shown - YYYY-MM-DD representation of the last date the ad was shown
region_stats.times_shown_end_date - YYYY-MM-DD representation of the date up to which times_shown (both upper and lower bounds) has been updated. This field is NULL if no impressions occured within the reporting period.
region_stats.times_shown_lower_bound - The lower bound of the number of times the ad was shown in the associated region. This field is NULL if no impressions occrued with the valid reporting period.
region_stats.times_shown_upper_bound - The upper bound of the number of times the ad was shown in the associated region. This field is NULL if no impressions occrued with the valid reporting period.
region_stats.times_shown_start_date - YYYY-MM-DD representation of the earliest date for which times_shown is considered (both upper and lower bounds). Impressions are reported on activity on/after March 1st, 2023. This field is NULL if no impressions occured with the reporting period.
region_stats.times_shown_availability_date - YYYY-MM-DD representation of the date on which impressions will become available if no impressions occurred within the reporting period. If impressions did occur within the reporting period, NULL.
audience_selection_approach_info (top level) - Information on audience selection, broken out by approach type. The available values are: "CRITERIA_INCLUDED" (Criteria from this category were included in the ad's audience), "CRITERIA_EXCLUDED" (Criteria from this category were excluded from the ad's audience), "CRITERIA_INCLUDED_AND_EXCLUDED" (Some criteria from this category were included and others were excluded from the ad's audience), and "CRITERIA_UNUSED" (Criteria from these categories were not used for audience selection).
audience_selection_approach_info.demographic_info - Describes if and how demographic info was used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.geo_location - Describes if and how geo location info was used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.contextual_signals - Describes if and how contextual signals were used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.customer_lists - Describes if and how customer lists were used to select the ad audience (see audience_selection_approach_info above for more details)
audience_selection_approach_info.topics_of_interest - Describes if and how topics of interest were used to select the ad audience (see audience_selection_approach_info above for more details)
disapproval (top level) - Information on how, where, and why the ad was removed
disapproval.removal_reason - The policy/policies that the ad violated
disapproval.violation_category - The high level policy violation category
disapproval.use_of_automated_means - Populated if the review of the ad was automated
disapproval.removal_location - ISO 3166-2 region code (for example "FR" for France) of the region where the ad was removed, or "GLOBAL" if the ad was removed globally
disapproval.decision_type - Whether the investigation was a result of a Google investigation or a legal notice