OnSumo Tools

Parasite SEO Matrix

This tool scores third-party platforms where you can publish content that ranks on their domain authority instead of yours. Enter your target keywords and the tool maps each keyword to the platforms most likely to rank for it, based on domain authority, content indexing speed, and whether the platform passes link equity. All processing happens in your browser. Your keyword list and strategy data never leave your device.

100% client-side. Filters stay in your browser (ons-parasite-seo-inputs).

Platform data last verified: May 2026. Domain authority figures are planning estimates from public SEO tools. Google's treatment of third-party content changes. Verify current DA and recent rankings before publishing.

Recommendation

For finance commercial content targeting US, Trustpilot is your best starting point.

Top platforms

#1 Trustpilot

92 score
DA
93
Niche fit
92%
Trust
4/5
Ease
2/5
Publish link

#2 YouTube

91 score
DA
100
Niche fit
80%
Trust
5/5
Ease
3/5
Publish link

#4 Capterra

88 score
DA
91
Niche fit
80%
Trust
4/5
Ease
2/5
Publish link

#5 Reddit

87 score
DA
91
Niche fit
88%
Trust
4/5
Ease
3/5
Publish link

#6 LinkedIn Articles

81 score
DA
98
Niche fit
82%
Trust
3/5
Ease
4/5
Publish link

#8 Medium

79 score
DA
95
Niche fit
70%
Trust
3/5
Ease
5/5
Publish link

#9 Product Hunt

77 score
DA
91
Niche fit
55%
Trust
4/5
Ease
3/5
Publish link

#10 Substack

75 score
DA
88
Niche fit
75%
Trust
3/5
Ease
4/5
Publish link

How this tool works

The parasite SEO matrix maps which high-authority third-party platforms rank in the top 10 organic results for your target keywords. You enter up to 20 keywords and the tool queries the search results API, then cross-references returned domains against a predefined list of parasitic platforms: Medium, LinkedIn, Quora, Reddit, Substack, GitHub Pages, YouTube, HubPages, and others. The output is a grid with keywords as rows and platforms as columns; a filled cell indicates a platform ranking for that keyword. A platform score weights how often each site appears across your full keyword set, ranking platforms by coverage. Key assumption: results reflect organic rankings at the time of the query for a neutral US English locale; ads, featured snippets, and knowledge panels are excluded. Edge case: Google personalizes results by location, browser history, and device type; rankings from a neutral US English query may differ from what your target audience sees in their local geography. For geo-targeted campaigns, validate rankings from the target region using a rank-tracking tool configured for the correct locale, not just this tool's output.

Worked example

You want to rank for "best project management tools 2026." | Platform | DA | Index Speed | Link Equity | Parasite Score | |----------|-----|-------------|-------------|----------------| | Medium | 95 | Hours (100) | Nofollow (0) | (95 x 0.5) + (100 x 0.3) + (0 x 0.2) = 77.5 | | LinkedIn | 98 | Hours (100) | Nofollow (0) | (98 x 0.5) + (100 x 0.3) + (0 x 0.2) = 79.0 | | Reddit | 92 | Hours (100) | Mixed (50) | (92 x 0.5) + (100 x 0.3) + (50 x 0.2) = 86.0 | | GitHub Pages | 97 | Days (70) | Dofollow (100) | (97 x 0.5) + (70 x 0.3) + (100 x 0.2) = 89.5 |

Frequently asked questions

  • What is parasite SEO?

    Parasite SEO is a strategy where you publish content on high-authority third-party websites to rank for keywords that your own domain lacks the authority to compete for. Instead of waiting months to build your domain authority, you place content on sites like Medium, Reddit, or LinkedIn that already have strong search positions. The \\\"parasite\\\" label comes from the fact that you are using the host domain's authority to carry your content into rankings.

  • Is parasite SEO a black hat technique?

    No. Publishing content on third-party platforms is standard content marketing. Guest posts, Medium articles, LinkedIn posts, and Quora answers are all legitimate. The strategy becomes problematic only when the published content is spammy, misleading, or violates the host platform's terms of service. Google's spam policies target thin or deceptive content regardless of where it is published, not the publishing strategy itself.

  • Does the tool access my website or any external APIs?

    No. The tool runs entirely in your browser. It uses a built-in reference table of platform data (domain authority, indexing speed, link policies) that is bundled with the page. It does not call any external API, fetch live DA scores, or access your website in any way. Your keyword inputs stay on your device.

  • How often is the platform data updated?

    The reference data is updated when the tool itself is updated. Domain authority scores and platform link policies change infrequently for major platforms. If a platform changes its link policy (for example, switching from dofollow to nofollow), the tool's data is refreshed in the next release cycle. The last-updated date is shown at the top of the tool page.

  • What is the difference between dofollow and nofollow links?

    A dofollow link passes PageRank (link equity) from the linking page to the linked page, which helps the linked page rank higher. A nofollow link tells search engines not to pass ranking signals through the link. For parasite SEO, dofollow platforms provide the double benefit of ranking the parasite page and building authority for your own site. Nofollow platforms only help with the parasite page's own ranking, not your domain.

  • Should I use this instead of building my own site's authority?

    No. Parasite SEO is a short-to-medium-term tactic, not a replacement for building your own domain. Content on third-party platforms can be removed, de-ranked, or deprioritized at any time by the platform. The tool is best used for keyword testing, quick wins on competitive terms, and supplementing your on-site content strategy while your domain authority grows.

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