Open data behind the original studies published at https://www.markstudios.com/research. studies.csv lists every study with its theme, page, files and the date it was added. Each folder holds the per-row CSV of one study; the page linked below has the full write-up, method, validation and limitations, and is the source of truth.
| Folder | Study | What one row is |
|---|---|---|
data/homepage-video-study |
Homepage Video Study | One of the 1,000 most-visited domains (Tranco list ZJ8PG): whether its homepage showed video, where, how and from which host, plus background-loop file size |
data/website-social-media-links-study |
Website Social Media Links Study | One working homepage: which of 18 social networks it links to a profile on |
data/homepage-seo-study |
Homepage SEO Study | One working homepage: title and meta description length, canonical, lang, Open Graph, H1 count, JSON-LD types |
data/website-third-party-tools-study |
Website Third-Party Tools Study | One working homepage: which of 43 outside tools it loaded in its first 10 seconds, its chat widget, other domains contacted |
data/ai-crawler-robots-txt-study |
AI Crawler Robots.txt Study | One working homepage of the Tranco top 1,000: which AI crawlers its robots.txt blocks for the homepage (RFC 9309 reading), and whether it serves llms.txt |
data/website-fonts-study |
Website Fonts Study | One working homepage: the font its body text and first heading render in, the web fonts it loads, and the font type (brand, open-source, system) |
| Folder | Study | What one row is |
|---|---|---|
data/youtube-metadata-study |
YouTube Tags, Titles and Descriptions Study | One video or Short from the most-subscribed YouTube channels: tag count and characters, title and description length, links, hashtags, chapters, uploaded captions, translations, paid promotion and made-for-kids flags, likes per 1,000 views |
data/youtube-shorts-length-study |
YouTube Shorts Length Study | One Short (and one channel) from the most-subscribed YouTube channels: length, resolution, upload date |
data/youtube-thumbnail-study |
YouTube Thumbnail Study | One thumbnail (and one channel): faces, face size, headline text, overlap with the title |
data/youtube-upload-time-study |
YouTube Upload Time Study | One upload (and one channel): exact publish time, minute, hour and day in the channel's time zone |
data/youtube-engagement-rate-study |
YouTube Engagement Rate Study | One upload (and one channel): views, likes and comments read on Oct 30, 2026, engagement rate, type, YouTube category, length, age when read and made-for-kids setting |
data/youtube-creator-comments-study |
YouTube Creator Comments Study | One recent upload from the most-subscribed channels: views, comments, top threads read, whether the creator's own comment is first, own comments and replies shown |
data/sp500-youtube-study |
S&P 500 on YouTube Study | One S&P 500 constituent: sector, whether its homepage links to or embeds YouTube, the company channel, subscribers, uploads and Shorts in 12 months |
data/podcasts-on-youtube-study |
Podcasts on YouTube Study | One show on Apple's top 100 U.S. podcasts: genre, publisher, its YouTube channel and subscribers, full episodes or clips matched, feed-to-YouTube gap |
data/youtube-sponsorship-disclosure-study |
YouTube Sponsorship Disclosure Study | One video on YouTube's most-popular charts (5 countries): length, views, paid promotion label, whether the description names a sponsor or only a promo code |
data/youtube-title-style-study |
YouTube Title Style Study | One video on YouTube's most-popular charts (5 countries): channel, title, category, length, charts |
data/youtube-view-count-change-study |
YouTube View Count Change Study | One upload (and one channel and type): views, likes and comments before (Jun 1-Aug 23, 2026) and after YouTube's Aug 24, 2026 view count change |
data/youtube-video-length-study |
YouTube Video Length Study | One recent video (and one channel) from the 100 most-subscribed channels: length in minutes, views when listed |
data/youtube-dubbing-study |
YouTube Dubbing Study | One recent video (and one channel): original language, the channel's own dubbed audio tracks and YouTube's automatic dubs |
data/youtube-auto-caption-accuracy-study |
YouTube Auto Caption Accuracy Study | One video with creator-uploaded English captions: word error rate of YouTube's automatic captions against them (and one channel: caption types) |
data/caption-reading-speed-study |
Caption Reading Speed Study | One captioned video or course: words per minute, characters per second, shares of captions over reading-speed and line-length limits |
| Folder | Study | What one row is |
|---|---|---|
data/video-editing-software-wikipedia-study |
Video Editing Software on Wikipedia Study | English Wikipedia human pageviews of 18 video editors' articles plus redirects: a per-editor summary (last 12 months vs five years earlier, per billion English Wikipedia views) and monthly views 2016-2026 |
data/video-editing-apps-app-store-study |
Video Editing Apps on the App Store Study | One video editing app with 1,000+ U.S. App Store ratings: ratings, update dates, chart ranks, the lowest listed weekly, monthly, yearly and lifetime prices and every in-app purchase Apple lists; google-play.csv: the app's Google Play listing and install band where we could match it to Android |
data/ai-video-generator-apps-app-store-study |
AI Video Generator Apps on the App Store Study | apps.csv: one AI video generator app with 1,000+ U.S. App Store ratings: ratings, update dates, chart ranks, the lowest listed weekly, monthly, yearly, credit-pack and lifetime prices and every in-app purchase Apple lists; labels.json: the hand labels and the rule |
data/film-school-earnings-study |
Film School Earnings Study | film-programs.csv: one film/video and photographic arts program (CIP 50.06) in the College Scorecard field-of-study file: institution, credential, median earnings 1 and 5 years after completing, graduates above a high school graduate's earnings, median federal debt; fields.csv: one field and credential level, medians compared with 10 fields |
data/video-editor-pay-by-state-study |
Video Editor Pay by State Study | One state with a published BLS OEWS May 2025 estimate for film and video editors: employment, median and mean pay, location quotient, BEA 2024 regional price parity and the median in national prices |
| Folder | Study | What one row is |
|---|---|---|
data/creator-economy-sec-filings-study |
Creator Economy in SEC Filings Study | One term and filing year: 10-K filings mentioning TikTok, YouTube, Instagram, influencers, creators and related terms, 2019-2025 (and a 60-filing sample of 2025 TikTok mentions by topic) |
data/deepfakes-in-sec-filings-study |
Deepfakes in SEC Filings Study | Yearly counts of 10-K filings mentioning deepfakes, voice cloning, synthetic media and generative AI, 2018-2026; every 10-K mentioning deepfakes (company, CIK, SIC, document link; 2026 rows with the 10-K item, topics and shared-clause flag); 2025-2026 rates by industry |
data/federal-video-production-contracts-study |
Federal Video Production Contracts Study | awards.csv: one U.S. federal contract award coded PSC T006 (film/video production) made in fiscal 2021-2025: agency, vendor, net obligations, competition, offers, small-business status, place of performance, USAspending link; fiscal-years.csv: one fiscal year, 2008-2026, net obligations (nominal and FY2025 dollars), new awards, vendors and shares |
data/gsa-video-production-rates-study |
GSA Video Production Rates Study | One labor category on one GSA Multiple Award Schedule contract, classed into a video production role (or graphic designer or photographer for comparison): job title, vendor, contract, hourly ceiling rate, experience, education, business size, worksite |
data/federal-advertising-contracts-study |
Federal Advertising Contracts Study | fiscal-years.csv: one fiscal year, 2008-2026, of U.S. federal contract obligations coded advertising (PSC R701) and public relations (R708), nominal and FY2025 dollars; largest-awards.csv: the 10 largest awards of fiscal 2021-2025 with funder, vendor, obligations, description and USAspending link |
data/federal-video-workforce-study |
Federal Video and Public Affairs Workforce Study | headcount.csv: one OPM employment snapshot (Sep 2015 to Aug 2026): federal civilian headcount in series 1071, 1084, 1060, 1035 and 1082 and in the whole workforce; public-affairs-departments.csv: one department's public affairs headcount in Dec 2024 and Aug 2026 |
| Folder | Study | What one row is |
|---|---|---|
data/healthcare-video-statistics |
Healthcare Video Statistics | One of the 200 largest U.S. nonprofit hospitals (IRS Form 990): homepage video, YouTube and TikTok links, virtual-care link; and one upload from their YouTube channels |
data/product-demo-video-statistics |
Product Demo Video Statistics | One of the 145 largest software publishers filing with the SEC: homepage demo, trial and contact-sales buttons and where the demo button leads; and one upload from their YouTube channels |
data/nonprofit-video-statistics |
Nonprofit Video Statistics | One of the 200 largest U.S. charities by private contributions (IRS Form 990): homepage video and social links |
data/music-video-statistics |
Music Video Statistics | One music channel among the 100 most-subscribed: uploads, Shorts, video length and titles in October 2026 |
data/fitness-video-statistics |
Fitness Video Statistics | One upload (and one channel) from the biggest fitness YouTube channels: type, length, counts, YouTube topic tags |
data/home-services-video-statistics |
Home Services Video Statistics | One upload (and one channel) from 37 home-improvement, DIY and trades channels: type, length, counts, chapters, captions |
data/financial-advisor-video-statistics |
Financial Advisor Video Statistics | One SEC-registered investment adviser's latest Form ADV: the social media and website addresses it lists (plus a yearly series); and one adviser YouTube channel's activity |
The 11 folders added on 2026-10-31 were copied from the site that day; federal-video-production-contracts-study, gsa-video-production-rates-study, federal-advertising-contracts-study, federal-video-workforce-study, film-school-earnings-study, ai-video-generator-apps-app-store-study and video-editor-pay-by-state-study were added on 2026-11-01.
Files were copied from the site on 2026-10-30 (Shorts length and upload time studies: edition 1.1) and resynced the same day after the site corrected the ranks of the eight channels after Karla Bustillos (#92 in the Wikipedia revision cited) in the YouTube studies to 93-100. One cell differs from the site copy: the homepage video study's final_url for reddit.com had a one-time bot-challenge query string, removed here. The studies are rerun on the schedule each page states.
CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Reuse with attribution to Mark Studios and a link to the study page. Websites, channels and tools named in the data belong to their owners.
See CITATION.cff, or cite the study page, for example: Mark Studios. "Homepage SEO Study." https://www.markstudios.com/research/homepage-seo-study