TESSERA · verified-permanent QR codes

I. Input

UTF-8 · any payload

Text or URL 0 chars · 0 UTF-8 bytes

Error correction Higher level = more recovery, but bumps the version up. For tattoos, the smallest version with the highest EC that fits is usually best (the panel below suggests it).

II. Output

Enter text

Version: ·
Size: ·
EC level: ·
Mask: ·

III. Round-trip

decoded back to text

Every QR is decoded by every available decoder. Downloads stay locked unless every decoder that read it agrees on the exact input.

IV. Damage preview · blur (tattoo aging)

Real tattoos fail through gradual ink bleed. This applies a Gaussian blur to the QR at the chosen severity and re-decodes. The tolerance log on the right runs every level on load and tells you the highest blur the QR survives unaided.

Damage 0%

awaiting input

V. Tattoo specs

awaiting input

Module size determines whether your phone can read the tattoo, and how well it withstands skin stretch and ink bleed over decades. Show the artist the recommended size below; placement (forearm, calf, upper back) matters as much as size.

VI. Export

locks until verified

PNG for the artist's screen. SVG for any size (recommended for tattoos). Spec sheet for the archive (print and file with important documents).