01Featured tool
5 Seconds Tester
Test whether a message is understood in five seconds—before traffic, polish or persuasion hide the problem.
- STATUS
- Live
- TECH
- Next.js · TypeScript · Vercel
LAB / 01
LABUseful things, built from curiosity.
Tools, experiments and side projects made to solve real problems.
JOSUE SOMARRIBAS · UX ENGINEER · CRO DEVELOPER
PRIVATE PLATFORM · ADVANCED BUILD
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DIGITAL EVENT INVITATIONSA private invitation platform with a public event layer, personalized guest experiences and a complete operational dashboard.
- Personalized invitationsUnique links, reserved places, envelope animation and RSVP flows.
- RSVP & guest operationsConfirmations, released places, messages, exports and activity history.
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Font Tester
Compare typefaces with real content, fine-tune size and spacing, and test readability.
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Local Blog Audio Generator
Generate natural-sounding article narration locally, privately and without a per-use fee.
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Experiment Preflight
Check whether an A/B test has enough traffic and time to detect an effect that would actually be worth shipping.
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FOUC Simulator
See how content flicker contaminates perception, behavior and experiment validity.
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URL Concat Tool
Turn Excel or CSV rows into parameterized URLs from a reusable template. Files stay entirely inside the browser.
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UTM Builder & Validator
Build campaign URLs, detect naming and encoding problems, and preview how their values will appear in GA4.
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Browser Debug Report
Capture viewport, screen, browser, input and preference details in one report that is ready to share with a developer.
View detailsHave a tool idea or a product problem?
I build practical interfaces and experiments that turn unclear problems into something useful.