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OJS for EveryoneThe Practical GuidebookRSYN Research LLP

Tutorial: Google Scholar Indexing Setup

Role: Journal Manager / Site Administrator
Time: 20–30 minutes
OJS Version: 3.5+

Google Scholar is one of the most important academic search engines. This tutorial explains how to ensure your OJS articles are correctly indexed by Scholar.

Before You Start​

  • You have Journal Manager or Site Administrator access.
  • Your OJS journal is publicly accessible on the internet.
  • Articles have PDFs published as galleys (Scholar requires full-text).

Step 1 — Enable the Google Scholar Plugin​

The Google Scholar Indexing Plugin inserts structured metadata tags (Highwire Press format) into article pages — these are what Scholar reads during crawling.

  1. Go to Settings → Website → Plugins → Installed Plugins.
  2. Find Google Scholar Indexing Plugin.
  3. Toggle to Enabled.
  4. Click Save (no configuration required — the plugin works automatically once enabled).

Step 2 — Verify Meta Tags Are Present​

  1. Navigate to any published article on your journal.
  2. Right-click the page → View Page Source.
  3. Search for citation_title in the source code.
  4. You should see tags like:
<meta name="citation_title" content="Your Article Title" />
<meta name="citation_author" content="Smith, John" />
<meta name="citation_publication_date" content="2024/01/15" />
<meta name="citation_journal_title" content="Your Journal Name" />
<meta name="citation_issn" content="1234-5678" />
<meta name="citation_doi" content="10.12345/example.2024.001" />
<meta name="citation_pdf_url" content="https://yourdomain.com/.../article.pdf" />

If these tags are absent, check that the Google Scholar plugin is enabled.

Step 3 — Check robots.txt​

Google Scholar's crawler (Googlebot-Scholar) must be allowed to crawl your site.

  1. Visit https://yourdomain.com/robots.txt.
  2. Ensure there is no Disallow: rule blocking Scholar:
User-agent: *
Disallow:

Or more specifically, ensure /index.php/ (where OJS article pages live) is not blocked.

Step 4 — Ensure PDF Galleys Are Published​

Scholar indexes full-text content from PDFs:

  1. In OJS, navigate to a published article.
  2. Confirm a PDF galley is published (visible on the article page as a PDF link).
  3. If no PDF is listed, go to the Production stage and upload a PDF galley.

Step 5 — Ensure Complete Article Metadata​

Scholar requires complete metadata on every article:

Metadata FieldWhere to Set in OJS
TitlePublication → Submission tab
Author(s)Publication → Contributors tab
AbstractPublication → Submission tab
KeywordsPublication → Submission tab
Volume, IssueAssign article to a published issue
Publication dateSet when scheduling to issue
ISSNSettings → Journal → Journal Identity
DOIDOI Plugin (recommended)

Step 6 — Request Indexing (Optional)​

Google Scholar typically discovers and indexes journals automatically within a few weeks of enabling the plugin. To speed this up:

  1. Set up Google Search Console for your domain.
  2. Submit your sitemap (/sitemap.xml) to Search Console.
  3. Use the URL Inspection tool to request indexing of specific article pages.
info

Google Scholar indexes separately from Google Search. A good Google Search Console setup helps general indexing but does not guarantee Scholar indexing. Scholar operates its own crawl schedule.

Step 7 — Verify Scholar Indexing​

After waiting 1–4 weeks:

  1. Go to scholar.google.com.
  2. Search for an article title from your journal (in quotes for exact match).
  3. If the article appears with the correct metadata and a PDF link, Scholar has indexed it successfully.

If articles are not appearing after 4+ weeks:

  • Verify the Google Scholar Plugin is enabled.
  • Check that article pages are publicly accessible.
  • Confirm PDF galleys are present and downloadable.

Troubleshooting​

ProblemSolution
Articles not indexed after 4 weeksVerify meta tags exist on article pages; check robots.txt
Wrong metadata shown on ScholarUpdate metadata in OJS and wait for Scholar re-crawl
PDF links not working on ScholarEnsure PDF galley URLs are public and stable
Duplicate articles in ScholarCheck if journal has multiple URLs; use canonical URLs and 301 redirects

Next Steps​