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Convertio vs Online-Convert: catalog facts
Convertio	Online-Convert
Freemium Free conversions in the browser, with paid plans for heavier use.	Free Conversions can be done for free in the browser.
Web	Web, Browser extension
More than 300 supported formats in one place Advanced options for many conversion types	Handles audio, video, image and document formats in one place Presets for social and messaging services
Files are uploaded to a third-party server Needs an internet connection	Files must be uploaded to a third-party server Needs an internet connection
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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