Tessera

See your app on every screen, live.

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Tessera

About Tessera

Live responsive mosaic lab — synced device viewports. Free 2 tiles; Pro £12/mo.

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ACA: Automated Client Acquisition
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ACA: Automated Client Acquisition

Warm leads nurtured until they buy or book
AI agents Cold Email Lead Generation
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Transactional Email Budget Planner
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Transactional Email Budget Planner

Compare modeled SES and MailerSend fees plus your setup and operating time. Export an auditable scenario with editable rates.
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PX to REM Workbench
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PX to REM Workbench

Convert pixels to rem at a custom root font size. Copy CSS and inspect a live spacing reference without uploading design data.
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