A Bright Hdr Image

Posted3 months agoActive3 months ago

walz

19 points

11 comments

walzr.comTechstory

calmpositive

Debate

20/100

HdrImage ProcessingPhotography

Key topics

Hdr

Image Processing

Photography

The post shares a bright HDR image, sparking discussion about HDR techniques and image processing.

Snapshot generated from the HN discussion

Discussion Activity

Moderate engagement

First comment

Peak period

90-96h

Avg / period

3.7

Comment distribution11 data points

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Based on 11 loaded comments

Key moments

01Story posted
Oct 15, 2025 at 1:06 PM EDT
3 months ago
Step 01
02First comment
Oct 15, 2025 at 1:08 PM EDT
2m after posting
Step 02
03Peak activity
8 comments in 90-96h
Hottest window of the conversation
Step 03
04Latest activity
Oct 19, 2025 at 1:14 PM EDT
3 months ago
Step 04

Generating AI Summary...

Analyzing up to 500 comments to identify key contributors and discussion patterns

Discussion (11 comments)

Showing 11 comments

Judgmentality

3 months ago

1 reply

This is the most "why is this on the front page of HN?" post I've ever seen.

Judgmentality

3 months ago

I really don't understand the timestamps on HN. I made this post days ago, not hours ago. I understand it was reposted but it's disingenuous to lie about the timestamp.

What the fuck, dang?

zamadatix

3 months ago

1 reply

Some AI slop to let you pick any color and brightness: https://codepen.io/zamadatix/pen/VYerweP. Note: it does not attempt to clamp anything, so if you extend brightness beyond what makes sense in the color space or your display can't actually represent that color the color may shift. If things just appear white try lowering the brightness (and checking it's actually running in HDR at the bottom).

If you have an HDR monitor + the latest Chrom* based browser this should work out of the box on macOS/Windows. Other platforms/browsers you'll have to check the WebGPU + HDR standards support (which will be different for <canvas> than <video>) and may need to twiddle flags and/or wait for future releases.

It should tell you the active color space and range info at the bottom.

Filligree

3 months ago

2 replies

Mobile Safari doesn’t have WebGPU… which I appreciate.

But it also supports HDR with just about every image format. All you need is a properly crafted PNG.

Rohansi

3 months ago

Why would you want it to not support WebGPU?

figomore

3 months ago

iOS 26 Safari has support to WEBGPU.

smusamashah

3 months ago

2 replies

On my phone, all i see is empty white image. Is that supposed to be a joke or is my device/browser not supporting HDR?

Rohansi

3 months ago

If it just looks like an ordinary white square then it's not displaying with HDR. Could be unsupported or maybe disabled.

amelius

3 months ago

You're lucky. On a real HDR display it shows a rectangle with the brightness of the Sun!

mr_donk

3 months ago

They don’t seem to do it anymore, but for a while the title on Disneyland.com would kinda sparkle in HDR when you loaded it on the right hardware/sodtware (safari on MacBook Pro for example). Was actually pretty subtle and animated out so it was more of a “wait, did I just see that?” sort of thing.

pierrec

3 months ago

The lack of context is kinda funny. This page from 6 months ago is a clearer demonstration and explains the idea: "HDR‑Infused Emoji" https://sharpletters.net/2025/04/16/hdr-emoji/

Discussed on HN: https://news.ycombinator.com/item?id=43717606

Basically a lot of recent-ish devices will display this with extra brightness. A feature intended for example in cinematic contexts, but can easily become an annoyance if abused.

View full discussion on Hacker News

ID: 45595569Type: storyLast synced: 11/20/2025, 2:46:44 PM

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