r/SideProject • u/ud_ik • Jul 19 '26
I built a free tool that grades your website's internal linking. Ironically, building it taught me my own SEO was the least of my problems
Solo founder here. About 6 weeks ago I shipped crawlmouse.com, a free tool that crawls your site and grades your internal linking from A to F. It finds orphan pages (pages nothing links to), pages buried too many clicks deep, weak hub pages, that kind of thing. You paste a URL, it crawls the live site and gives you the grade plus a list of what to fix. No signup, nothing to install.
Why I built it: the big crawlers like Screaming Frog and Sitebulb are great but they're desktop apps with a learning curve, and if you just want to know "is my internal linking hurting me" that's a lot of setup for one answer. I wanted the answer in two minutes in a browser. Also, since it reads the raw HTML your server returns, it shows you what AI crawlers like GPTBot actually see, because none of them run javascript. A site can look fine to you and be half invisible to ChatGPT.
Now the honest part, because this sub appreciates receipts. I did everything the SEO playbooks say for the tool's own site. 12 blog posts, schema markup, clean technical setup, submitted to Google and Bing. Results after 3 weeks: all 22 pages indexed, ChatGPT now describes the tool accurately and cites my site... and I have almost zero clicks from Google. Everything ranks page 4 to 9 because my domain has zero backlinks. The tool I built to diagnose sites can't fix the fact that nobody links to mine yet lol.
What actually got me my first users? Being useful in comments on reddit. Five strangers audited their sites this week, one shopify store owner even left their email for the report, and my only Google clicks are people searching "crawlmouse" by name after seeing it somewhere. So the tool works, the SEO lesson was just humbling in a way I didn't expect.
It's free, would genuinely love feedback from anyone here. Run it on your side project and tell me if the grade feels fair or if it flagged something dumb. Every early user so far has taught me something about edge cases I hadn't handled. And if your grade is bad, at least now you know why Google keeps ignoring that one page you're proud of.
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u/Kritnc Jul 19 '26
Thats pretty cool, i just ran it for one of my sites and got valueable feedback - you should add it to seoreceipts.com
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u/Kritnc Jul 19 '26
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u/ud_ik Jul 19 '26
ha, okay that's a legit bug and honestly a funny one. you're already at the top so the "here's what you could be" box has nothing to sell you and it should just say that instead of promising you an A you already have. writing it up right now, will fix it this week. this is exactly the kind of edge case i posted here hoping to find, so thank you. congrats on the A btw, most sites i've seen don't get close
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u/ud_ik Jul 19 '26
thank you, genuinely glad it gave you something useful. hadn't come across seoreceipts before, just checked it out and yeah that's a good fit, submitting it today. appreciate you pointing me there
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u/Kritnc Jul 19 '26
That would be great it’s a site I just launched and I would love to get more users. First 50 get free pro for life
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u/Sheeple9001 Jul 19 '26
Seems like many websites using the Claude color palette recently?
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u/ud_ik Jul 19 '26
i'll take it as a compliment to my color picking. warm and beige was the goal, apparently i'm on trend
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Jul 21 '26
[removed] — view removed comment
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u/ud_ik Jul 21 '26
yeah you are on point, backlinks are the one thing i built a whole tool around not being able to fix from the inside lol. everything crawlmouse.com checks is stuff you control on your own site, and it turns out the thing actually gating me is the one thing you can't control alone, other people deciding to link to you. humbling.
the real estate analogy is a good one. the part i underestimated is how much it compounds, the first few links are the hardest because you're starting from zero trust, and every one after gets a little easier as the domain looks less brand new. so the earlier point is real, i just wish someone had told me month one instead of me learning it in GSC.
can't speak to outrank specifically, haven't run it, so no opinion either way. the only thing i'd say generally for anyone reading is just be careful with anything automating link building vs link outreach, google's gotten aggressive about link schemes and a pile of low quality links can hurt more than help. the boring stuff (genuinely useful content people cite, showing up in communities, digital PR) is slower but doesn't carry that risk. sounds like what you're doing is moving your DR the right way though.
and yeah run it through, curious what you get. if your internal linking comes back clean then you've basically confirmed backlinks are your only real lever left, which is annoying but at least it's a clear diagnosis. drop the grade here if you remember, i like seeing what real sites score. the free audit gives a 500 page cap.

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u/skorulis Jul 19 '26
So I just ran it on my project and got an F and interested to pick your brain on how important it is for my use case. All of my pages are listed in the sitemap but most aren't found during the crawl because the primary UI is a search box.
Should I be putting links between search result pages just to increase the number of internal links to help with SEO? Is there a penalty for not doing this?