From 71635ff16816b762001623fe8493800a7e5a5843 Mon Sep 17 00:00:00 2001 From: Jonas Gunz Date: Mon, 1 Jul 2019 15:50:45 +0200 Subject: updated README --- README.md | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/README.md b/README.md index fd12f5b..6633278 100644 --- a/README.md +++ b/README.md @@ -7,4 +7,10 @@ Supported Filetypes: * JPG (JFIF) * PNG +## How it works + +JFIF and PNG containers use chunks to store different types of data (eg. Image data, Colorcorrection, Copyright, EXIF, notes, etc.). Headstripper uses a chunk-whitelist to only copy data needed to display the image. Any unknown chunks are discarded. + +Some image editing software uses custom chunks to store color correction data and more in PNG chunks. This data is also removed (as it is not strictly required) and thus may result in incorrect images. + License: MIT -- cgit v1.2.3