[frameworks/kimageformats] autotests: Test Readme: added JPG support

Git commit 687914f2e715d3ee776f3f054ad32a88bb95fa7c by Mirco Miranda.
Committed on 28/07/2026 at 05:19.
Pushed by mircomir into branch 'master'.

Test Readme: added JPG support

M  +5    -1    autotests/README.md

https://invent.kde.org/frameworks/kimageformats/-/commit/687914f2e715d3ee776f3f054ad32a88bb95fa7c

diff --git a/autotests/README.md b/autotests/README.md
index a2e83d01..476d7645 100644
--- a/autotests/README.md
+++ b/autotests/README.md
@@ -23,7 +23,11 @@ e.g. PSD plugin).
 The reading tests are mainly based on comparing the image read by the plugin 
 with a template in a known and working format. For this reason, the template 
 formats chosen are those distributed by the Qt project: PNG in the first 
-instance and TIFF for image formats not supported by PNG (e.g. CMYK images).
+instance, TIFF for image formats not supported by PNG (e.g. CMYK images) and, 
+as a last choice, lossy JPG for large images.
+
+> [!important]
+> Keep the size of individual test images on the order of a few tens of KiB.
 
 Some image options such as `QImageIOHandler::Size`, 
 `QImageIOHandler::ImageFormat` and `QImageIOHandler::ImageTransformation` are