Open VSX Publish requirements — check extension before publishing
Open VSX and vsce preflight for extension authors: flags SVG icons, http or untrusted SVG badges, missing publisher/engines, Microsoft-only dependencies and VSCE_PAT publishing before 2026-12-01. Runs entirely in your browser — nothing is uploaded.
- $29 once, one licence key per person or team seat.
Free here: Checks the open package.json or publish workflow and names every vsce / Open VSX blocker with its line and the exact replacement line.. In the editor: Whole-workspace publish plan: every extension manifest and workflow in the repo, a dated migration report, and a CI gate that fails a build adding a new blocker. — that part asks for a licence key.
Same engine as the VS Code extension, byte for byte.