About SEOtest.app
SEOtest.app is an independent, ad-supported collection of free on-page SEO tools and plain-English guides. There is no signup, no trial that expires, and no “upgrade to see your results” wall. The goal is simple: let anyone check and fix the technical details that decide how a page looks in Google and on social media, in seconds.
What you'll find here
The site is built around two things that work together:
- Free tools. A growing toolkit covering the on-page essentials — a title & meta character counter with live SERP preview, a redirect-chain checker, an Open Graph image checker, a heading-structure analyzer, plus schema, robots.txt, sitemap, favicon and logo tools. The homepage runs a full on-page audit for any URL.
- Guides. Our blog explains the “why” behind each tool — how title-tag pixel width affects truncation, when a 301 beats a 302, how to fix redirect loops, what actually belongs in an Open Graph card.
Who builds and maintains it
SEOtest.app is built and maintained by the SEOtest.app editorial team — a small, independent group of developers and SEO practitioners who spend their days shipping and ranking real websites. We build the tools we wished existed: fast, free, single-purpose, and accurate.
We are not a venture-backed SaaS funnel and we do not sell your data. The site is funded by unobtrusive display advertising, which is what keeps every tool free to use. Tools and guides are produced by the team and reviewed against current Google documentation and live search behaviour before they are published or updated.
Editorial contact: Questions, corrections, or feature ideas go straight to a human at [email protected]. If you spot something in a guide that is out of date or wrong, tell us — we fix and re-date it.
How we build & what we stand for
Tools that answer one question well
Every tool exists to settle a specific on-page question — is this title too long, does this URL chain redirect cleanly, will this Open Graph card render right on LinkedIn. We would rather ship fifteen sharp single-purpose tools than one bloated dashboard that does everything badly.
Tested against real Google behaviour
Limits and recommendations are checked against how Google actually renders results — pixel widths for title and meta tags, current Core Web Vitals thresholds, live SERP truncation — not against numbers copied from a 2015 blog post. When Google changes the rules, we update the tool and the guide.
Guides written to be the last click
Our blog is not filler to surround ads. Each guide is meant to fully answer the question that brought you there, with concrete examples, the exact code or markup you need, and honest notes on what does not matter. If a topic is genuinely simple, we keep the article short rather than padding it.
Your data stays yours
Most tools run entirely in your browser. When a tool has to fetch a URL server-side (redirect checks, Open Graph previews), we fetch the public page and return the result — we do not store your URLs to build a profile or resell them.
Editorial & accuracy standards
- We date and update. SEO advice rots. Guides carry a published date, and when Google changes a threshold or a tool gains a feature, we revise the relevant article rather than leaving stale numbers in place.
- We cite the source of a limit. When we say a meta description should sit near 155 characters or that LCP should be under 2.5s, that comes from Google's own guidance and live SERP testing — not from rounding a competitor's number.
- We say when something doesn't matter. Plenty of “SEO factors” are myths. If a detail has no measurable effect, we tell you so you can stop worrying about it.
Get product updates
New tools and major guide updates, occasionally — no spam. You can also reach the team any time at [email protected].