Free tools
Five tools, no accounts, nothing uploaded.
Each of these was built because the job kept coming up in client work and the existing options wanted an email address for something that should run in a browser. They all do: the calculation happens on your machine, nothing is sent anywhere, and there is no signup, no trial and no limit.
Free tool
Schema markup generator
Valid JSON-LD for the six types most sites actually need: Organization, LocalBusiness, Article, FAQPage, BreadcrumbList and Product. Fills as you type, drops empty fields and flags the required ones you have missed.
- 6 types
- Live validation
- No signup
Carries honest notes on what each type earns rather than only what validates.
Open the toolFree tool
SERP preview and length checker
Previews your snippet as it is likely to appear, and measures titles and descriptions in pixels rather than characters, because pixels are how Google truncates. Desktop and mobile budgets.
- SERP preview
- Pixel accurate
- Desktop and mobile
Forty capital Ws measure 529px against 124px for forty lowercase Is. A character counter cannot see that.
Open the toolFree tool
Hreflang generator
Builds a complete, reciprocal, self-referencing hreflang set from your locales and URLs, with x-default handled. Output as HTML tags, XML sitemap entries or an HTTP Link header.
- Reciprocal by construction
- 3 output formats
- Validates as you type
Hreflang fails silently when one return tag is missing, so the point of generating it is that you cannot forget one.
Open the toolFree tool
robots.txt generator
Builds a valid robots.txt with presets for WordPress, Shopify, staging and the AI crawlers. Flags a missing leading slash, a relative sitemap, and the two rules that take a site off Google entirely.
- 5 presets
- Warns before it breaks
- No signup
Also says plainly that Disallow controls crawling, not indexing, which is the mistake most generators leave you to make.
Open the toolFree tool
llms.txt and llms-full.txt generator
Builds either file in the proposed format: a title, a summary and curated link sections, or the full version with your content inlined. Copy it or download it correctly named.
- Both files
- Marks what is missing
- No signup
Also argues against overvaluing its own output, since Google has said it does not use the file.
Open the toolWhy these are free
There is no catch, and no funnel behind them.
Every one of these started as something written for a client job. Once a thing exists and runs entirely in a browser, hosting it costs effectively nothing, so putting it behind an email capture would be charging you for the privilege of being marketed to.
So there is no account, no trial, no usage cap and no newsletter. Nothing you type is transmitted, which you can verify rather than take on trust: open your browser's network tab and use any of them. There are no requests, because the work happens in your machine.
What they are not is a substitute for judgement. A generator produces valid output from what you give it; whether the markup should exist, whether that description is the right one, whether hreflang is even your problem, are decisions no tool makes. Each page says plainly where its own output stops being useful, which is the part most free tools leave out.
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