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クラウドワークス

crowdworks.jp

Scanned Fresh934 checks

92of 100
How it adds up →
In its own wordsクラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】日本最大級のクラウドソーシング「クラウドワークス」実績のあるプロに依頼・発注できるから安心クオリティーでどこよりも早くリーズナブル！ホームページ作成、アプリ・ウェブ開発やロゴ・チラシ作成、ライティング、データ入力まで、幅広い仕事に対応！
PopularityTop 10KBuilt withRuby on Rails10 technologies foundTrust signalsCouldn’t check the pageDomain registered 15 years agoBuilt with AI? None foundNo traces found

クラウドワークス (crowdworks.jp) is ranked in the top 10,000 sites and was registered in 2011. It is built with Ruby on Rails; we found no traces of an AI site builder.

The page shows little text before JavaScript runs. Sites drawn by JavaScript show fewer signals until we can render them in a browser.

Popularity

Website Traffic Checker

Among the top 10K sites.

A popularity band, not a visit count.

Tranco: #17,466 · Chrome UX Report: Top 10,000 · Majestic Million: #39,824

Each list, with its date
SourceSaysAs of
TrancoA research ranking that combines several traffic and link sources, published daily.#17,466list of 27 Oct 2026
Chrome UX ReportRank buckets from Google’s real Chrome traffic, published monthly.Top 10,000Sep 2026
Majestic MillionRanks sites by how many separate networks link to them (links, not visits), published daily. CC BY 3.0#39,824list of 28 Oct 2026
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Technology

Tech Stack Checker

Built with Ruby on Rails.

  • Ruby on RailsFrameworkShow evidenceHide evidence
    Evidence · page source, line 140
    <meta name="csrf-param" content="authenticity_token">
    Popular sites using Ruby on Rails Is this wrong? Report it
Everything else it uses (9)

Around it: CDN, DNS, Email, Tag manager and more.

Business tools can stay listed after a site stops using them.

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Trust signals

Website Trust Checker

We couldn’t read the page; outside records are below.

Signals, not a judgement: missing details are common on small, honest sites.

  • Domain registered12 Oct 2011, 15 years agoNoted
  • HTTPSLoads over HTTPS with a valid certificateFound
  • Security filterNot blocked by Cloudflare’s security filter and Quad9’s security filterNoted
Every signal we looked at

On the site

  • Contact pageThe page shows little text before its JavaScript runsCouldn’t check
  • About pageThe page shows little text before its JavaScript runsCouldn’t check
  • Privacy policyThe page shows little text before its JavaScript runsCouldn’t check
  • TermsThe page shows little text before its JavaScript runsCouldn’t check
  • Refund or returns policyThe page shows little text before its JavaScript runsCouldn’t check
  • Contact detailsThe page shows little text before its JavaScript runsCouldn’t check
  • Company detailsThe page shows little text before its JavaScript runsCouldn’t check
  • Payment providersThe page shows little text before its JavaScript runsCouldn’t check
  • Trackers2 analytics and advertising tools: Google Ad Manager, TaboolaNoted

Behind the site

  • Security filterNot blocked by Cloudflare’s security filter and Quad9’s security filterNotedCloudflare’s security filter and Quad9’s security filter
  • Domain registered12 Oct 2011, 15 years agoNotedWHOIS (whois.jprs.jp)
  • HTTPSLoads over HTTPS with a valid certificateFound
  • Protective settings3 of 6 in placePartly
  • Email protectionProtected against forged emailFoundDNS records

A second opinion on its security setup: Mozilla’s HTTP Observatory grades the site when you open it. Ten checks before you buy · A signal looks wrong? Report it

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What it is

Website Summary

It calls itself “クラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】”.

In its own wordsクラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】日本最大級のクラウドソーシング「クラウドワークス」実績のあるプロに依頼・発注できるから安心クオリティーでどこよりも早くリーズナブル！ホームページ作成、アプリ・ウェブ開発やロゴ・チラシ作成、ライティング、データ入力まで、幅広い仕事に対応！

The page doesn’t show enough to say what kind of site it is (a shop, a blog, an app…).

Who is behind it

  • WikidataCrowdWorks
Show evidenceHide evidence
Exhibit 1 · Wikidata
Q114595452: CrowdWorks
Is this wrong? Report it

Each name is quoted from its source. A brand and the company that owns it often go by different names.

More about it: Wikidata, profiles, AI use, page facts

In Wikidata

Wikidata, the free knowledge base behind Wikipedia, lists this domain as the official website of this item. Volunteers write it; each item shows its sources.

AI use

  • AI training: asks meta-externalagent, GPTBot and ClaudeBot to stay away.
  • AI assistants: may read it for the people who ask them.
Show evidence (3)Hide evidence
Exhibit 1 · robots.txt, line 23
User-agent: meta-externalagent · Disallow: /
Exhibit 2 · robots.txt, line 24
User-agent: GPTBot · Disallow: /
Exhibit 3 · robots.txt, line 25
User-agent: ClaudeBot · Disallow: /
Is this wrong? Report it

What its robots.txt and robots tags ask of AI crawlers. Each crawler chooses whether to follow it.

Site name
クラウドワークス
Language
Japanese (ja)
What it tells search engines
None

Read from what the page says about itself; we haven’t checked whether it’s true.

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Built with AI?

AI Website Detector

No AI builder traces found.

Coding tools such as Cursor leave no traces, so this doesn’t mean a person made it.

AI traces: None found

How we know

AI site builders leave traces in the sites they make. We look for the traces of 53 of them and show every match with the line it came from, so you can check it yourself.

We test this on 2,275 sites whose makers we know, and publish what we get wrong.

How we test it · Every builder we know · How to tell if a site was built with AI

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AI access

AI Crawler Checker

AI can find it, but not yet read it well: it scores 35 of 100.

It keeps 3 AI training crawlers out, and lets AI assistants in: the site’s choice, never scored.

35of 100

AI readiness

Findable

Search engines may list it and crawlers may read it.

  1. Findable
  2. 3AI-friendly
  3. 4Agent-ready

To reach Readable:Text without scripts +25

Can AI find it?

20/32

Can AI read it?

15/58

Can agents use it?

0/10

Optional: for sites with an API or a sign-in.

Below the median of the 2,439 most visited sites we read, which is 72.

Checked 31 Oct 2026

What to fix

3 fixes, up to +47 points

  • Text without scripts

    Now Little, 114 characters: scripts draw the rest.

    Put the page’s text in its HTML, rendered on the server or at build time.

    Details

    Why it matters: Most AI crawlers don’t run scripts: they read only what the HTML holds.

    Show evidenceHide evidence
    Exhibit 1 · page text, before scripts run
    クラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】 大変申し訳ありませんが、ページを正しく表示できませんでした。 推奨されているブラウザ であるかをご確認の上、時間をおいて再度お試しください。
    Is this wrong? Report it
    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    The home page of https://crowdworks.jp sends only 114 characters of text before its scripts run, so AI crawlers that don’t run JavaScript see an almost empty page. Make the server send the page’s content in its HTML: render it on the server, or prerender each page at build time (static generation), so its headings, text and links are in the HTML before any script runs. Keep the interactive parts working as they do now.
    +25points

  • Structured data

    Now None found.

    Add schema.org structured data, as JSON-LD, to the home page’s HTML.

    Details

    Why it matters: Structured data tells AI tools and search engines what the site is: a company, a shop, a product.

    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    Add schema.org structured data to the home page of https://crowdworks.jp as JSON-LD, in a <script type="application/ld+json"> tag in its HTML: an Organization with its name, url, logo and sameAs links to its official profiles, and a WebSite with its name and url. Add the type that fits what the site offers too, such as Product, Article or LocalBusiness. Use only facts that are true of the site.
    +12points

  • Sitemap

    Now 8 listed in robots.txt, but the first answers 301.

    Publish an XML sitemap and list it in robots.txt.

    Details

    Why it matters: A sitemap lists every page, so crawlers find the ones no link leads to.

    Show evidenceHide evidence
    Exhibit 1 · robots.txt, line 43
    Sitemap:https://crowdworks.jp/sitemaps/public_employee_category/employee_category.xml.gz
    Is this wrong? Report it
    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    Add an XML sitemap at https://crowdworks.jp/sitemap.xml that lists the site’s public pages, in the sitemaps.org format, and add the line "Sitemap: https://crowdworks.jp/sitemap.xml" to https://crowdworks.jp/robots.txt. Generate it from the site’s routes, so new pages are added to it.
    +10points
Optional: 4 fixes few sites have yetup to +18 points

  • Files for AI agents

    Now None of the 8 we look for.

    If agents could use the site, publish what they need where they look.

    Details

    Why it matters: Agents act for people: they look for these files to know what a site lets them do. Worth it only if agents can use the site.

    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    If AI agents could use https://crowdworks.jp for its visitors (to search it, book, buy or sign in), publish what they need at the standard addresses, and only what the site really offers: an MCP server card at /.well-known/mcp/server-card.json if it runs an MCP server, an API catalog at /.well-known/api-catalog (RFC 9727) listing its public APIs, and OAuth protected resource metadata at /.well-known/oauth-protected-resource (RFC 9728) if agents sign in.
    +10optional

  • llms.txt

    Now None found.

    Publish a short Markdown summary of the site at /llms.txt.

    Details

    Why it matters: A short summary for AI models, at an address they can find. A proposal: few AI companies say they read it yet.

    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    Create https://crowdworks.jp/llms.txt as llmstxt.org describes it: a Markdown file with an H1 naming the site, a one-paragraph summary in a blockquote, and short sections listing its most useful pages as links, each with a line on what it holds. Serve it as text/plain or text/markdown.
    +4optional

  • Markdown copy

    Now Not offered: it sends the page’s HTML.

    Answer requests for Markdown with a Markdown version of the page.

    Details

    Why it matters: A Markdown copy gives AI tools the page’s words without the HTML around them.

    Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)
    When a request to https://crowdworks.jp asks for Markdown (its Accept header includes text/markdown), answer with a Markdown version of the page’s main content and the header Content-Type: text/markdown. Requests for HTML keep getting HTML; add Vary: Accept so caches keep the two apart.
    +2optional
Every check, with its evidence

Can AI find it?

  • robots.txtFound, 43 linesFound
  • Sitemap8 listed in robots.txt, but the first answers 301Partly
    Show evidenceHide evidence
    Exhibit 1 · robots.txt, line 43
    Sitemap:https://crowdworks.jp/sitemaps/public_employee_category/employee_category.xml.gz
    Is this wrong? Report it
  • Links for AI toolsNone in the home page’s headersNot found
  • Search listingAllowed: no noindex ruleAllowed

Can AI read it?

  • Text without scriptsLittle, 114 characters: scripts draw the restNot found
    Show evidenceHide evidence
    Exhibit 1 · page text, before scripts run
    クラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】 大変申し訳ありませんが、ページを正しく表示できませんでした。 推奨されているブラウザ であるかをご確認の上、時間をおいて再度お試しください。
    Is this wrong? Report it
  • Markdown copyNot offered: it sends the page’s HTMLNot found
  • llms.txtNone foundNot found
  • Title and descriptionBothFound
    Show evidence (2)Hide evidence
    Exhibit 1 · page source, line 46
    <title>クラウドソーシング・仕事依頼・求人情報は日本最大級の「クラウドワークス」【クラウドワークス】</title>
    Exhibit 2 · page source, line 41
    <meta name="description" content="日本最大級のクラウドソーシング「クラウドワークス」実績のあるプロに依頼・発注できるから安心クオリティーでどこよりも早くリーズナブル！ホームページ作成、アプリ・ウェブ開発やロゴ・チラシ作成、ライティング、データ入力まで、幅広い仕事に対応！">
    Is this wrong? Report it
  • Structured dataNone foundNot found

Can agents use it?

  • API catalogNone foundNot found
  • Sign-in for AI agentsNone foundNot found
  • Auth.mdNone foundNot found
  • AI catalogNone foundNot found
  • MCP serverNone foundNot found
  • Agent cardNone foundNot found
  • Agent SkillsNone foundNot found
  • Agents in DNSNone foundNot found

What it lets AI do

Not scored

Keeping AI out is the site’s choice, so it never lowers the score.

  • AI trainingOpenAI kept out, Anthropic and Meta partly; the rest let inPartly
  • AI answers and searchOpenAI, Anthropic, Google, Perplexity and 3 moreLet in
Every AI crawler, and how we checked

AI companies

  • OpenAIChatGPTTo train its modelsKept outGPTBotline 24To answer people and searchLet inOAI-SearchBotChatGPT-User
  • AnthropicClaudeTo train its modelsPartlyClaudeBotline 25, kept outanthropic-ailet inClaude-Weblet inTo answer people and searchLet inClaude-SearchBotClaude-User
  • GoogleGeminiTo train its modelsLet inGoogle-ExtendedTo answer people and searchLet inGoogle-CloudVertexBot
  • PerplexityTo train its modelsNone namedTo answer people and searchLet inPerplexityBotPerplexity-User
  • MetaMeta AITo train its modelsPartlymeta-externalagentline 23, kept outFacebookBotlet inTo answer people and searchLet inmeta-externalfetchermeta-webindexer
  • AppleApple IntelligenceTo train its modelsLet inApplebot-ExtendedTo answer people and searchNone named
  • AmazonTo train its modelsLet inAmazonbotTo answer people and searchLet inAmzn-SearchBotAmzn-User
  • Common Crawlopen data for trainingTo train its modelsLet inCCBotTo answer people and searchNone named
  • ByteDanceTo train its modelsLet inBytespiderTikTokSpiderTo answer people and searchNone named
  • MistralLe ChatTo train its modelsNone namedTo answer people and searchLet inMistralAI-User

None of the 27 other AI crawlers we know is kept out.

What it tells AI crawlers

It gives no Content Signals and no “noai” tag.

Like 32% of the 1,691 popular sites whose robots.txt we read in October 2026, it keeps at least one AI training crawler out. How many websites block AI crawlers?

We read the site once, as our named bot: its robots.txt, read as crawlers read it, its home page and the files AI tools ask sites for. What we couldn’t read says so. robots.txt asks and doesn’t enforce: a firewall can treat AI crawlers differently from us.

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Score breakdown

Site Score

92 of 100: strong trust signals.

How established and checkable it is; AI traces carry no weight.

92of 100
Track recordHow long the domain has existed25 / 25
PopularityIts place in public rankings20 / 20
Security and setupHTTPS and standard protections13 / 15
ConsistencyName, description and what it tells search engines2 / 5

Scored on the parts we could check.

Why each part scored what it did
Track recordHow long the domain has existed25 / 25domain registered 15 years ago
PopularityIts place in public rankings20 / 20Top 10K in a popularity list
Security and setupHTTPS and standard protections13 / 15loads over HTTPS · sends visitors to HTTPS · doesn’t insist on HTTPS · protective settings
ConsistencyName, description and what it tells search engines2 / 5site name in another script than its address: couldn’t check · describes itself · doesn’t tell search engines what it is

A high score isn’t a promise that a business is honest. How the score works.

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Domain history

Domain History

Registered in 2011.

  1. Domain registeredWHOIS (whois.jprs.jp)
  2. This scanCheckAnySite

The web archive couldn’t be reached; we’ll ask it again. Why can this be empty?

Changes, earlier scans and alerts
Since our previous scan
This is our first scan of the site.
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How we scanned it

Only from what anyone can see: the site’s public pages and public records.

  • Politely. Our scanner, CheckAnySiteBot, says who it is and follows the site’s robots.txt.
  • With sources. Every fact above says where it came from and when.
  • Without guessing. When we couldn’t check something, we say so.
This scan, in numbers

934 checks on 31 Oct 2026, with version 0.6.0 of our checks and version 1.1 of the score.

How we work · What each version changed · About our scanner

Quick look

Built with AI?

None foundWe found no AI builder traces.

“None found” never means “made by a person”: coding assistants leave no traces.

All the evidence →

Related

Quick look

How popular is it?

Top 10KBy the best of 3 public lists.

  • Tranco#17,466list of 27 Oct 2026
  • Chrome UX ReportTop 10,000Sep 2026
  • Majestic Million#39,824list of 28 Oct 2026

A popularity band, never a visit count.

The popularity section →

Related

Quick look

What is it built with?

Framework
Ruby on Rails

And 9 more around it (CDN, DNS, Email, Tag manager), in the section.

Each with its evidence →

Related

Quick look

Which trust signals does it show?

On the site

  • Contact pageCouldn’t check
  • About pageCouldn’t check
  • Privacy policyCouldn’t check
  • TermsCouldn’t check
  • Refund or returns policyCouldn’t check
  • Contact detailsCouldn’t check
  • Company detailsCouldn’t check
  • Payment providersCouldn’t check
  • TrackersNoted

Behind the site

  • Security filterNoted
  • Domain registeredNoted
  • HTTPSFound
  • Security headersPartly
  • Software versionsNoted
  • NetworkNoted
  • Email setupFound
  • First certificateCouldn’t check
  • DNSSECNot found
  • Certificate authoritiesNot found
  • Security contactNot found

Signals, not a judgement: missing details are common on small, honest sites.

Every signal with its source →

Related

How has it changed? →
Quick look

How does it add up?

92of 100

Strong trust signals. An open formula (v1.1): every point comes from a finding above. AI traces carry no weight.

Track recordHow long the domain has existed25 / 25
PopularityIts place in public rankings20 / 20
Security and setupHTTPS and standard protections13 / 15
ConsistencyName, description and what it tells search engines2 / 5
Why each part scored what it did →

Related

Questions about crowdworks.jp

What is crowdworks.jp?

クラウドワークス describes itself: “日本最大級のクラウドソーシング「クラウドワークス」実績のあるプロに依頼・発注できるから安心クオリティーでどこよりも早くリーズナブル！ホームページ作成、アプリ・ウェブ開発やロゴ・チラシ作成、ライティング、データ入力まで、幅広い仕事に対応！” See the evidence

How old is crowdworks.jp?

Its domain was registered on 12 Oct 2011, 15 years ago. See the evidence

What is crowdworks.jp built with?

It is built with Ruby on Rails; we found 10 technologies in all. See the evidence

How popular is crowdworks.jp?

It is among the top 10,000 sites, by Tranco, Chrome UX Report and Majestic Million. See the evidence

Was crowdworks.jp made with AI?

We found no traces of an AI site builder. That doesn’t prove a person built it: AI coding assistants leave no traces. See the evidence

Who is behind crowdworks.jp?

Wikidata names CrowdWorks. See the evidence

More sites near it in popularity

Automated findings from the site’s public home page and public records, as of 31 Oct 2026. They describe what we found, not the people or business behind the site, and they may be incomplete or out of date. This is information, not advice. Terms · Report an error

What this scan can’t tell you
  • Whether the business is real, honest or delivers what it sells.
  • Whether a site was made with AI when no traces were left: coding assistants and hand edits leave none.
  • How many people visit: we show popularity bands from public lists, not visits.
  • Anything beyond the home page as it was at the time of the scan.

Is this your site? Ask for a correction.

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