RedonApp

About RedonApp

Free SEO tools that tell you exactly what to fix, built by TheHashCode. No signup, no credit card.

What RedonApp is

RedonApp is a set of free SEO tools for marketers, bloggers, developers and agencies. Each tool takes a keyword or a URL and returns the data you need to make a decision, along with a list of what to change.

Use them to find keywords worth writing for, audit a page before it goes live, check a site’s technical health, or see how a link will look when someone shares it.

How our data works

Where each tool’s numbers come from, what they measure, and how the scores are calculated.

Keyword Research

Search volume and CPC
From third-party SEO data providers, for the country you choose, with 12 months of monthly volume for the trend chart.
Competition
How strongly advertisers bid on the keyword in Google Ads, from 0 to 100 (Low, Medium or High). It measures paid competition, not how hard the keyword is to rank for organically.
Top results
Fetched live from Google when you search. To judge organic difficulty, look at who holds these positions.

SEO Audit

Page data
We fetch the page when you run the audit and check its meta tags, content, images, links, structured data and social tags.
Score
A 0–100 score weighted across six categories: meta tags 20 points, content quality 25, images 15, links 15, page speed 15, and schema and social tags 10. The total maps to a letter grade from F to A+.
Core Web Vitals
LCP, INP and CLS come from Google PageSpeed Insights, for mobile and desktop.

Technical SEO

Site files and headers
robots.txt, the XML sitemap, redirects, hreflang, structured data and response headers are read from your domain when you run the scan.
Security grade
Twelve header categories, such as HSTS and Content Security Policy, are each graded A to F, with a snippet that fixes every failing check.
Web Vitals
Scores, metrics and suggestions come from Google PageSpeed Insights, for mobile and desktop.

Social Preview

Tags
We read the page’s meta, Open Graph, Twitter Card and structured data when you run the scan, and build every preview from them.
Preview Score
A 0–100 score across five categories: basic meta 20 points, Open Graph 25, Twitter Card 20, structured data 25 and technical 10.
Previews
Drawn to match each platform’s current layout. Platforms change their designs from time to time, so treat a preview as a close guide.

What we care about

  • Free, with no signup

    Every tool works without an account or a credit card. Paste a keyword or a URL and the report starts straight away.

  • The fix, not just the problem

    Each issue shows the value we found next to the value it should be, and many come with code you can copy.

  • Clear about the data

    We say where every number comes from and what it measures, so you know how much weight to give it.

Who builds RedonApp

RedonApp is built and run by TheHashCode. We’re a small, remote team of developers and SEO practitioners, and we build the tools we want to use ourselves: fast, free and specific about what to fix.

Our guides on the blog are written by the same team, using the same tools.

Contact the team

Partner tools

Tools from our parent companies

Trusted tools built and maintained by our parent network.

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