https://github.com/FRex/topng

Convert image to png using stb_image and stb_image_write
https://github.com/FRex/topng

Last synced: 27 days ago
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Convert image to png using stb_image and stb_image_write

• Host: GitHub
• URL: https://github.com/FRex/topng
• Owner: FRex
• License: unlicense
• Created: 2019-03-18T15:57:09.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-06-26T22:49:14.000Z (over 4 years ago)
• Last Synced: 2024-08-04T02:10:43.607Z (4 months ago)
• Language: C
• Homepage:
• Size: 87.9 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• AwesomeCppGameDev - topng

README

        
# topng

Small program to convert an image file to png using two libs from [stb](https://github.com/nothings/stb).

Given two filenames it loads the image from first and saves in second. Given one filename it

will strip one extension from the first, append .png and use that name as the output. Given any

other amount of arguments it will print usage info to stderr and do nothing else.

* Written in pure C

* Handles Unicode filenames on Windows

* Tested on Windows 10 with Visual Studio 2017 and Pelles C

* Tested on Fedora 29 with GCC

If you already have ImageMagick, ffmpeg or any smilar command line tool that

can handle image conversions from many formats to many others then this program

might be of no use to you, except if you like the simpicity of invoking it or

are looking for a small self-contained C program that does this conversion.

Go to releases to download a Windows exe compiled with Pelles C with no `-O2`.

**Warning**: when using Pelles C with `-O2` a certain operation in `stb_image`

(average of two bytes in code handling average filter in png decoding) will

produce incorrect result which will cause some png images to be badly corrupted:

[Pelles C forum bug report](https://forum.pellesc.de/index.php?topic=7837.0).