Jomatter

Jomatter

Free browser-based HTML, CSS and JavaScript tools for developers.

Coming soonLaunches Monday, Nov 2 · in 25 days

Developer Tools·Productivity

What is Jomatter?

Jomatter provides a collection of free online browser-based tools specifically designed for HTML, CSS, and JavaScript developers. The platform offers utilities for formatting, minifying, validating, analyzing, generating, and testing code directly in your browser without requiring any sign-up.

It is built for web developers and programmers who need quick, accessible utilities to streamline their daily coding workflows and handle routine front-end development tasks efficiently.

What sets Jomatter apart is its completely free, no-signup-required approach, allowing users to instantly access and utilize a variety of web development tools in one centralized place.

Publisher

Joined Sep 2026

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FounderPlaybooks.

What other founders did to grow.

2722 dispatches from hundreds of founders, pulled from the week's best podcasts.

Product
I always encourage startups to really think very honestly about what your lifetime value of a customer is in terms of gross profit contribution and also be very thoughtful on your payback period.

LTV Must Mean Gross Profit, Not GMV — And Payback Period Is What Actually Matters

Phil sees founders routinely present LTV figures that include gross merchandise value while taking a 1-10% take rate — creating numbers that look like $300 LTV when the true gross profit LTV is $3-30. Separately, a long LTV with a 24-month payback period creates a working capital crisis: you're writing a $1 check to Facebook today and waiting two years to get it back. The actionable rule: model LTV as gross profit dollars, model payback in months, and don't raise marketing spend until the math clears.

Mindset
you can be a good CEO and a bad manager I'm legitimately not a very good manager... the craft changes They're certainly going to bring a different set of like personal values right to the process of building stuff

CEO and manager are orthogonal skills — own it

Hulls explicitly distinguishes CEO skills (vision, capital allocation, culture, willingness to pick fights) from management skills (developing individuals, executing ops). Product managers at large companies often are not builders at all — they are strategy aligners — and the skills that make a great founder rarely produce a great middle manager. Founders who believe they are failing because they struggle with people management may actually be excellent CEOs; the two roles are not a linear progression.

There's a play for whatever you're stuck on.

Read all 2722 playbooks