✓ TestedWorks with CSV, Excel, Google Sheets → JSON-LD Schema
By dataclean.to team · 2026-02-12
Job boards and aggregators pull postings from company career pages, staffing agencies, ATS platforms, and direct employer submissions. The same position often appears multiple times when an employer posts to several boards simultaneously, when a staffing agency and the hiring company both list the role, or when expired postings are resubmitted with minor changes. dataclean.to identifies these overlapping listings by comparing job titles, company names, locations, and posting content to clean up your job feed.
The Problem
Duplicate job listings degrade the candidate experience and inflate marketplace metrics. Job seekers encounter the same software engineer role listed six times from three different sources, eroding confidence in the platform. Aggregators that scrape multiple boards without deduplication present a misleading picture of market demand: what appears to be 500 open positions in a market might represent only 200 unique roles. Recruiters monitoring competing boards waste time reviewing listings they have already seen. For the job board operator, duplicates increase infrastructure costs without adding value and skew analytics used for pricing and sales decisions. W3C Data on the Web Best Practices
How to Fix It
1
Export job listings data
Pull listings from your job board database, ATS feeds, or scraper output into CSV format. Include job title, company name, location, posting date, description text, salary range, and source URL.
2
Upload to dataclean.to
Upload the CSV. The tool compares job titles, company names, and location data to identify postings that represent the same open position despite coming from different sources.
3
Review duplicate listing clusters
Examine grouped duplicates. Typical patterns include the same role posted by both the employer and a staffing agency, reposted listings with updated dates but identical content, and positions listed with slightly different titles across boards.
4
Consolidate into unique job listings
Merge confirmed duplicates into single listings. Keep the most recent posting date, the most complete job description, the direct employer URL when available, and the widest salary range disclosed.
5
Export the clean job feed
Download the deduplicated CSV for import into your job board or aggregator. Clean listings improve candidate trust, provide accurate market demand data, and reduce infrastructure overhead.
Frequently Asked Questions
How does the tool distinguish between the same role at different locations?
Location is a key matching field. A 'Software Engineer' posting at a company's New York office and the same title at their San Francisco office are treated as separate listings. Only postings matching on both role and location are flagged as duplicates.
Can it catch agency postings that duplicate direct employer listings?
Yes. When a staffing agency posts a role that the hiring company also listed directly, the tool identifies the overlap by matching job title, location, and description content even though the posting company name differs.
What about jobs that are reposted monthly to stay at the top of search results?
Reposted listings with identical or near-identical content but different posting dates are flagged as duplicates. The tool retains the most recent version so your feed stays current without showing the same stale opening multiple times.
Example: Input → Output
title
company
location
salary
type
Senior Developer
Acme Inc
Remote
$120k-$150k
Full-time
senior developer
acme inc
remote
120000-150000
full time
Red rows show common data quality issues. dataclean.to normalizes and generates JSON-LD automatically.