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Offline-First, Zero Backend: Building a Tailoring Business App That Works Without Internet

Every tailor I know keeps his whole business in paper registers. One notebook for measurements. Another one for orders. Payments live in a third place, which is mostly his memory.

  • TailorVexa is an offline-first app for tailoring businesses, replacing paper registers.
  • No internet required due to inconsistent connectivity and high mobile data costs in target markets.
  • Local storage and security features like PIN and biometric lock ensure fast, secure operation.

Linear Light Upscaling Is Correct, and It Cost Me 18 Shadow Levels

Every resampling article opens with the same demo: downscale a black-and-white checkerboard in sRGB, get a muddy grey that should have been mid-grey, then do it in linear light and get the right…

  • Resampling in linear light preserves high-frequency detail better than sRGB.
  • Linear resampling results in worse PSNR compared to sRGB, wasting bits in shadows.
  • Quantizing linear intermediate to 8-bit causes banding in dark shadows, reducing quality.

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