Developer Tools

Instantly discover your device's screen dimensions, resolution, and display specifications. Free tool - check screen size, pixel density & more in seconds!

Generate reusable names, avatars, identities, company rosters, and more for prototypes, testing, seed data, and AI workflows

A demo company data roster built with synthetic names, avatars, and identities from Name to Avatar.

UserTold.ai interviews real users when they get stuck, keeping the quote, screen, and page path together as evidence you and your coding agent can review.

Transactional email with a Resend-compatible API and assisted onboarding. Compare MepMail plans, send through the API or the SMTP relay, and create your free beta account.

Calculate the network, subnet mask, broadcast, wildcard, and usable host range for any IPv4 address and prefix. See the binary split, including /31 and /32.