# impeccable ext-v1.4.0 — Extension 1.4.0

- Product: impeccable (https://whatsnew.fyi/product/impeccable)
- Vendor: impeccable
- Date: 2026-09-04
- Version: ext-v1.4.0
- Original notes: https://github.com/pbakaus/impeccable/releases/tag/ext-v1.4.0
- Permalink: https://whatsnew.fyi/product/impeccable/releases/ext-v1.4.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — The detector now runs as WebAssembly in an offscreen document, making it independent of a site's Content Security Policy
- **added** — Added offscreen permission to enable the detector to run in an offscreen document

- **The detector runs as WebAssembly.** The extension now takes a snapshot of the page and evaluates the rules in an offscreen document, so a site's Content Security Policy no longer decides whether the detector runs. Same rules as the CLI and live mode, built from the same source. The new `offscreen` permission is what makes that possible; nothing else about what the extension can see has changed.