First I want to thank you for the great update! Many functions were improved and errors were fixed.
---
In the export dialog I took the WebP format and tried to compress to filesize.
XnView MP ignore the desired filesize (512kb) and use the quality setting (75) to show the estimated filesize.
The saved pictures file is as big as the preview shows (1.08 MB).
Xnviewmp_091.png
PC: Intel 8700k + Asus Z370-F + 48 GB RAM Corsair+G.Skill + Asus RTX 3050 OC OS: Windows 11 Pro 64bit 25H2 | GFX: XnViewMP 1.11.5 | Adobe Photoshop Elements 2024 + Elements XXL 11 Android 8-16: Samsung S7, S10, S23, TAB S7, S11, Ugoos AM7 TV-Box