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Comment by _cxgq | Hacker News Reader

Sorry, a little off topic gripe about the article itself. I have gigabit internet and still noticed the two images for this article loading line by line, top to bottom. Upon inspection I see they are using massive (5.67mb & 3.6mb) .png images with a resolution of 2832x1838. However, the maximum size they are ever displayed is 836x546.

It took me less than 1 minute to do a quick and dirty optimization bringing them down to less than 100kb each. Here you go author:

https://i.imgur.com/WGk8dBS.jpg https://i.imgur.com/pHSFsCb.jpg

View on HN

Thank you, I did this blog post rather quickly :(

Edit: updated the images, thanks again

You're welcome, have a great day friend.

Idea: a simple service that takes a URL and discovers stuff like this and spits out optimizations.

Solution: This already exists, Google Lighthouse is one (https://developers.google.com/web/tools/lighthouse) but many non-Google alternatives exists too (https://alternativeto.net/software/google-lighthouse/)

So Google's Lighthouse? Or more on-the-fly fixes by the webserver like mod_pagespeed?

Pretty sure Yahoo and google both had a service that did that a decade or more ago.

Being in a forum with people in the middle of nowhere can serve as a very immediate "service" e.g.

- hey guys look at my blog post

- I'm in [a village in Tibet or whatever] and it's still loading after 30 seconds...

Shoutout to https://images.weserv.nl/. e.g. given https://example.com/foo.jpg, you can do <img src="https://images.weserv.nl/?w=100&url=https://example.com/foo....">

I love the HN community.

Could also opt for Webp instead, that can save an additional 50 % at indistinguishable quality when zooming fully in

> indistinguishable quality

Definitely not indistinguishable at the default settings of all the webp encoders I have tried.

Not sure which ones you used but pillow handled it flawlessly, and as I said, i zoomed fully in with a comparison program and there was barely any difference even at 80 percent quality while using up to 80 percent less space

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