Contrast auditor, CLS inspector, hreflang validator and llms.txt generator. Plain ES modules: no build step, no dependencies, no network.
Extracted from the source of https://www.murattunali.com.tr, where these tools run in production.
Four small auditors that run entirely in the browser. No build step, no dependencies, no network requests, no storage. Open the file and it works.
# any static server (ES modules need http, not file://)
python3 -m http.server 8000
# then open http://localhost:8000/No dependencies and no build step. Everything runs in the browser:
no network requests, no storage, no eval. Serve over http rather
than opening the file directly — ES modules require it.
MIT (LICENSE).