ShadowCat
Dev tools
file transfer
SHOW HN2026
How HN took it
9 positive, 19 neutral or asking, 0 mixed, 5 critical, out of 33 comments about the project. Thread score +0.17.
Idea: 7 for, 1 againstExecution: 1 for, 3 againstDesign: 1 for, 0 againstPerformance: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Minimalistic, cool idea
From 2 comments
This is cool and minimalistic! I've been noodling on https://qr-send.com which is a slightly more polished version of the "erasure fountain codes + stream of QRs"-idea, inspired…
kig on HNI love this type of stuff. Some years ago I did something similar, but instead of QR Codes it used a convoluted mess of audio frequency modulation to send data through sound…
hootz on HN
Single HTML file deployment is appealing
From 1 comment
Cool stuff. I’m fond of the “single HTML file” deployment option.
alex_suzuki on HN
Objections
Receiving transfer fails or shows nothing on some phone QR readers
From 2 comments
Is there a client that needs to be used to be able to receive files this way? I tried the dedicated QR reader on my iPhone, and the Camera app, and couldn’t get it to assemble…
davidcollantes on HNThis is a polished implementation of the idea, but when I try and use it, I get to "file complete" but then.. nothing? And I see no way to report a problem or bug.
dschep on HN
Data size limited by QR capacity
From 1 comment
What's the length limit? I tried pasting some text and got this message: code length overflow. (85700>18672)
acrophiliac on HN
Requests
Demo video
From 1 comment
Interesting idea! A demo video would be great :)
pajamasam on HN
Hosted live version such as GitHub Pages
From 1 comment
You should turn on github pages so we can see it live. Seems cool but I’m not at my pc rn
lukew3 on HN
Questions
How large files are handled via chunking
From 1 comment
Clever use of QR for file transfer. How does it handle larger files? Is there chunking + reassembly on the receiving end?
m_m_carvalho on HN
What client is needed to receive files
From 1 comment
Is there a client that needs to be used to be able to receive files this way? I tried the dedicated QR reader on my iPhone, and the Camera app, and couldn’t get it to assemble…
davidcollantes on HN
Alternatives named
Txqr animated QR transfer
From 1 comment
This method of animated QR data transfer is quite efficient with fountain codes. I had PoC implementation back in the day - Txqr [1] [2] [1] https://divan.dev/posts/animatedqr/…
divan on HN
qr-send.com with fountain codes
From 1 comment
This is cool and minimalistic! I've been noodling on https://qr-send.com which is a slightly more polished version of the "erasure fountain codes + stream of QRs"-idea, inspired…
kig on HN
get-beam static web transfer
From 1 comment
I also implemented a static web with that idea: https://github.com/anhldbk/get-beam
anhldbk on HN
phntm.sh zero-knowledge transfer
From 1 comment
very nice list! Can I suggest adding my https://phntm.sh as well? itis a zero-knowledge file transmission system.
aliirz on HN