tuner
A chromatic tuner for your browser????
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manifest.json
{
"update_url": "https://clients2.google.com/service/update2/crx",
"manifest_version": 3,
"name": "tuner",
"description": "A chromatic tuner for your browser????",
"version": "0.1.1",
"icons": {
"48": "tuner_48.png",
"128": "tuner_128.png"
},
"action": {
"default_popup": "tuner.html"
}
}