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Real-ESRGAN vs Bigjpg: catalog facts
Real-ESRGAN	Bigjpg
Free Free and open source under the BSD-3-Clause license.	Freemium Free to try, with paid plans for faster and larger enlargements.
Windows, macOS, Linux, Command line	Android, iOS, Web
Dedicated model variants tuned for anime versus photo content BSD-licensed and widely reused inside other tools and GUIs	Up to 16x enlargement Tuned for illustrations and anime-style art
Core project is a command-line library rather than a polished GUI app No repository update reflected since mid-2024	Large enlargements are slower without a paid plan Images are processed on the vendor's servers
Downloadable app, Self-hosted	Downloadable app, Web application
Open source	Closed source
License: BSD-3-Clause	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 26, 2026

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