Embed <5 byte image in vcf on NFC Tag

[Pilgrimsmaster]

I think these links may help you

COVID certificate and other large NDEFs

I’m continuing this here from this post because it would become really OT in the other thread. @Pilgrimsmaster: maybe you could transfer the other post in here for consistency? So, I have a nice short PDF that fits in a DESFire EV2. I figured I’d give burning it into one of my test cards a shot, to see how long it takes to read back, and I’m running into a really basic problem that I didn’t even think about: how to stick a PDF into an NDEF? Long story short, TagWriter doesn’t kn…

And more Specifically this one with the webp image

Automated vCard writer (with photo)

I’ve done some more research and testing, and I found a two ways to increase photo quality even more: 1/ Decrease the image saturation: the end result looks less colorful, but the size of the compressed image decreases significantly 2/ Change file format from JPEG to WEBP. I’ve done tests on a few Android cellphone, and it turns out they all support WEBP natively down to at least Android v5. And boy! is WEBP better than JPEG or what! For the same final size, a WEBP image has a higher resolutio…

@Hiyer

etc.This is for a LORA based project.

Would love to here more about this