Open Tools
net0 sent

Free · open source · no account

Tools that never see your data.

Five SEO and AI-visibility tools that run entirely inside this tab. Your inputs are never uploaded, because there is nowhere for them to go — the whole site is static files and the meter in the corner counts every call it makes.

Open the toolsRead the source
Readingsthis page
Tools5Each one produces a file or a number you take away.
Requests sent after load0Counted live. No API, no analytics, no font CDN.
Accounts required0There is no server to hold one.

The tools

calculatorSEO ROI calculatorFind out what has to be true for the budget to pay for itself, before you commit it.templateContent calendar generatorTopics in, a dated publishing plan out, with the weekends skipped and the owners assigned.templateCompetitor analysis templateScore rivals on factors you weight yourself, so the ranking argues from your priorities.previewSERP snippet previewType a title and watch the pixel ruler, not the character counter, decide where it stops.generatorllms.txt generatorBuild the curated Markdown index that points models at your pages worth reading.

Why a second site, and why these five

Visibility100x already publishes 19 free checkers. They all work the same way: you give one a URL, it fetches the page from a server and reports what it found. None of them could be rebuilt here even if we wanted to, because a browser tab is not permitted to fetch another site and read the response — the reason is worth two minutes if you have ever wondered why every URL checker on the web needs a backend.

So this site builds the opposite shape. These tools take input you already have and hand back an artifact: a spreadsheet, a text file, a number with its assumptions attached. Nothing is fetched, so nothing needs a server, so nothing needs to be trusted. That is the whole design.

The choice of five was not arbitrary either. Sort free tools by the artifact somebody is actually asking for and you get four kinds: a number to justify a decision, a structure to do the work inside, a file that has to be valid, and a preview of what some other system will make of your work. These are one of each, plus a second template, because those are the four jobs a tool can finish without ever leaving your machine.

What "runs in your browser" is doing for you

Mostly it means you can paste things you would not otherwise paste. An unannounced product launch in a content calendar, a client's real deal values in an ROI model, a competitor scorecard with your honest opinion of your own site in it — these are the inputs that make the tools useful and the ones people quietly water down before typing them into a form that submits somewhere.

It also means the tools keep working when the network does not, and that they cannot be discontinued out from under you. Save the page, or forkthe repository, and you have them permanently. The licence is MIT.