VSCodium extension compatibility — check extensions for free
VSCodium migration check: flags extensions in .vscode/extensions.json and devcontainer.json that Microsoft licenses for VS Code only or that Open VSX lacks, with the open replacement ID. Runs entirely in your browser — nothing is uploaded.
Free here: Check the open extensions.json, devcontainer.json or settings.json: every Microsoft-only or Open VSX-missing extension, the licence clause that restricts it, and the open replacement ID. In the editor: Scan every extension list in the whole workspace at once and export one Markdown migration report (ID, licence clause, replacement) for the team ticket. — that part asks for a licence key.
Same engine as the VS Code extension, byte for byte.