Compare software

string.is vs sttr: catalog facts
string.is	sttr
Free Free to use and open source under the AGPL-3.0 licence.	Free Free and open source under the MIT licence.
Web, Self-hosted	Windows, macOS, Linux, Command line
Detects the input format and suggests output options Sets no cookies and uses a strict Content Security Policy	Many encodings, hashes and text conversions in one tool Processors can be chained
Internet Explorer is not supported Limited to the formats its converters cover	Operates on text only Long list of operations to browse
Web application, Self-hosted	Downloadable app
Open source	Open source
License: AGPL-3.0	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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