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FastStone Photo Resizer vs iMazing Converter: catalog facts
FastStone Photo Resizer	iMazing Converter
Free Free for personal and educational use.	Free Free to download and use.
Windows	Windows, macOS
Batch conversion and renaming in one tool Reads HEIC and WebP	Converts both photos and videos in one app Available for Mac and Windows
Windows only Free licence covers personal and educational use only	Limited to HEIC and HEVC source formats Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.