SourceGoogle Search Central
PublishedApril 8, 2020
TypeOfficial case study
SampleOne site (Saramin, Korea)
The short version: Basic technical hygiene comes first: crawl errors, duplicates and canonicals.
What they studied
A Korean job platform fixed crawl errors, removed keyword-stuffed meta tags and duplicate content, added canonical URLs and added JobPosting, breadcrumb and salary markup.
Key findings
- Organic traffic rose 15% in the first year from fixing crawl errors alone.
- Organic Google traffic rose 102% year over year in the 2019 hiring season.
- New member sign-ups from organic search rose 93%, and conversion rate rose 9%.
Key learnings
- Basic technical hygiene comes first: crawl errors, duplicates and canonicals.
- Structured data for your industry (jobs here) can add a second wave of growth.
Things to keep in mind
- Published by Google, one company. The case study does not separate the effect of each change.
Read it alongside
- Rakuten Recipe: 2.7x search traffic with recipe structured data (Google Search Central, 2018)
- MX Player: 3x Google traffic with video markup and sitemaps (Google Search Central, 2021)
Source
Official case study by Saramin, published by Google Search Central, April 8, 2020.
We read the source and checked every figure on this page against it on October 13, 2026. Summaries and learnings are ours. Spotted an error? Tell us.
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Traffic from Google grew 3 times. Our summary of what it found, what to do about it, and what to keep in mind.