Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#1

Post by rootVIII » Sun, Nov 22, 2020, 8:26 AM UTC

Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs
github.com

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#2

Post by kowlo » Sun, Nov 22, 2020, 7:31 PM UTC

A browser plugin that I use for Safari/Chrome/Firefox/Edge does this too (https://darkreader.org).

> Configure the dark theme: brightness, contrast and sepia. Enable for all websites or particular domains.

Works for PDFs too.

No affiliation.

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#3

Post by glushkov » Sun, Nov 22, 2020, 8:08 PM UTC

Not sure why this needs a dedicated application, you can do this in Chrome or FF with a single line of JS:

  javascript:(function(){viewer.style = 'filter: grayscale(1) invert(1) sepia(1) contrast(75%)';})()

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#4

Post by tapia » Sun, Nov 22, 2020, 8:22 PM UTC

You can do this on-the-fly with Zathura... in Linux

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#5

Post by ketamine__ » Sun, Nov 22, 2020, 8:36 PM UTC

glushkov wrote: post #3

Not sure why this needs a dedicated application, you can do this in Chrome or FF with a single line of JS: javascript:(function(){viewer.style = 'filter: grayscale(1) invert(1) sepia(1) contrast(75%)';})()

Didn't work for me. I'm using Brave.

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#6

Post by bartvk » Sun, Nov 22, 2020, 8:44 PM UTC

Very cool. I've been searching for a PDF viewer which can do this under macos, but just converting is fine too.

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#7

Post by xyst » Sun, Nov 22, 2020, 8:51 PM UTC

https://github.com/rootVIII/pdfinverter/blob/master/utils.go...

using go to wrap a python script - this is some "hacker man" stuff right here

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#8

Post by xrisk » Sun, Nov 22, 2020, 8:59 PM UTC

tapia wrote: post #4

You can do this on-the-fly with Zathura... in Linux

Zathura also exists on macOS..

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#9

Post by pepemon » Sun, Nov 22, 2020, 9:05 PM UTC

xyst wrote: post #7

https://github.com/rootVIII/pdfinverter/blob/master/utils.go... using go to wrap a python script - this is some "hacker man" stuff right here

But using boring Python only, you are unable to add fancy Go mention to the submission's title!

Re: Show HN: PDF Inverter for macOS (In Golang) Darken Your PDFs

#10

Post by wzy » Sun, Nov 22, 2020, 9:09 PM UTC

So PDF viewers apps on MacOS do not support color changing by way of accessibility options?