[frameworks/kimageformats] /: Readme: update supported formats

Git commit 516750e6fc00554ea3e1f117fc45ebb0a39601c7 by Mirco Miranda, on behalf of Mirco Miranda.
Committed on 28/07/2026 at 07:44.
Pushed by mircomir into branch 'master'.

Readme: update supported formats

M  +9    -4    README.md

https://invent.kde.org/frameworks/kimageformats/-/commit/516750e6fc00554ea3e1f117fc45ebb0a39601c7

diff --git a/README.md b/README.md
index 4110b14b..2991da5c 100644
--- a/README.md
+++ b/README.md
@@ -31,13 +31,13 @@ The following image formats have read-only support:
 
 The following image formats have read and write support:
 
-- AV1 Image File Format (avif)
+- AV1 Image File Format (avif, avifs<sup>1</sup>)
 - DirectDraw Surface (dds)
 - Encapsulated PostScript (eps)
-- High Efficiency Image File Format (heif)
-- JPEG 2000 (jp2, j2k, jpf)
+- High Efficiency Image File Format (avci<sup>2</sup>, heic<sup>2</sup>, heif<sup>2</sup>, hej2<sup>2</sup>, hif<sup>2</sup>)
+- JPEG 2000 (jp2, j2k, jpf<sup>1</sup>)
 - JPEG XL (jxl)
-- JPEG XR (jxr)
+- JPEG XR (jxr, hdp<sup>1</sup>, wdp<sup>1</sup>)
 - OpenEXR (exr)
 - Personal Computer Exchange (pcx)
 - Quite OK Image format (qoi)
@@ -45,6 +45,11 @@ The following image formats have read and write support:
 - Softimage PIC (pic)
 - Targa (tga): supports more formats than Qt's version
 
+Footnotes:
+1. Read only support.
+2. It depends on the HEIF plugins installed. 
+
+
 ## Contributing
 
 See the [`QImageIOPlugin`](https://doc.qt.io/qt-6/qimageioplugin.html)