Online Ruler
Turn any screen into a free, actual‑size ruler , measure in cm, mm, inches or pixels, no install or account needed.
What is Online Ruler?
Online Ruler (RealRuler) is a free, browser-based ruler that turns any phone, tablet, laptop or desktop screen into an actual-size measuring tool. No install, no account, no camera: just calibrate your display and measure in cm, mm, inches or pixels. Features four synchronized ruler edges, bank-card or device-profile calibration, a live X/Y crosshair, draggable guides and exact coordinate markers. Great for measuring small flat objects against the screen, checking pixel spacing in web and UI design, or quick everyday measurements. Calibration stays private in your browser, and built-in guides explain how zoom and scaling affect accuracy. Works instantly in any modern browser.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
I knew that that was an opportunity like the amount of we call it like earned media now but I was just like yeah I got to get as many people and capture their information as much as I can because I knew that that was my cheat code
Build your waitlist before the press moment
Before attending the FTC press conference, Aaron built nomorobo.com with a single email capture box and no product. By the time the app launched months later, he had 30,000 email addresses — all from earned media he converted at the moment of peak attention. Treat any high-visibility event as a demand-capture opportunity: the list is your proof of market and your launch engine.
if we have to you know use that structure I would clarify the language and call it more something like like reader problem fit like you're not starting with you you're starting with the other person and you're not starting with here's what I want to say you're starting with well what's their problem what's their question
Optimize for reader-problem-fit, not product-market-fit — write "you content", not "I content"
Reframe writing as reader-problem-fit, not self-expression. Start every piece with the reader's question (not your topic): what does this person actually need to know? Even Harry Potter and David Foster Wallace answer specific questions readers carry into the book. The shift from "here's what I want to say" to "here's what you need" is what unlocks the audience response everyone wants. The product is the reader's outcome; the writing is just the delivery.
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Comments
1We built RealRuler to be a fast, privacy-first alternative to bulky measurement apps. It turns any browser tab into an actual-size ruler with just a quick calibration.