chrome.i18n in browser extensions: one build, every language
A hands-on Chrome extension i18n tutorial: localize an MV3 build with chrome.i18n and _locales — UI, store listing and RTL. Full runnable code, ~30 minutes.
Maxim Kosterin
18 min read
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Articles tagged "tutorial"
14 articles found
Act on the current page from Chrome's address bar: omnibox + activeTab
An MV3 tutorial: accept an omnibox suggestion, spend the activeTab grant, and highlight or count words on the current page. Runnable code, no install warnings.
Maxim Kosterin
16 min read
Omnibox keywords in Chrome extensions: a command palette for zero permissions
Build a Chrome extension command palette on the omnibox API — a keyword in the address bar, live suggestions, no permission warning. Full MV3 code, ~25 min.
Maxim Kosterin
17 min read
Read, write and watch cookies from an MV3 extension
Build a Chrome extension that lists, edits and watches the current site's cookies with chrome.cookies — full MV3 code and the empty-array trap, ~25 min.
Maxim Kosterin
18 min read
chrome.privacy in browser extensions: build a panel that admits what it can't change
Most privacy extensions render toggles they can't enforce. Build an MV3 chrome.privacy panel that reads levelOfControl before it draws a switch — full code.
Maxim Kosterin
20 min read
Record the current tab from an MV3 extension: tabCapture and offscreen documents
A service worker can't hold a MediaStream. Build a Chrome extension that records the current tab's video and audio with chrome.tabCapture — full code, ~30 min.
Maxim Kosterin
16 min read
chrome.management in browser extensions: build a permission audit popup
A hands-on Manifest V3 tutorial: use the chrome.management API and Chrome's own permission warnings to audit every extension installed. Full runnable code.
Maxim Kosterin
16 min read
Content scripts in single-page apps: how to survive a route change in MV3
Your content script runs once on YouTube and never again. Fix Chrome extension SPA navigation with webNavigation — or without a new permission. Full MV3 code.
Maxim Kosterin
15 min read
Runtime script injection in Chrome extensions: ISOLATED vs MAIN world
chrome.scripting.executeScript end to end: inject on click with activeTab, pass args safely, and choose ISOLATED or MAIN world. Full MV3 code, ~25 min.
Maxim Kosterin
22 min read
Optional permissions in Chrome extensions: ask at the click, not at install
Chrome extension optional permissions, end to end: install with no warning, then request topSites and a single host at runtime. Full MV3 code, ~25 minutes.
Maxim Kosterin
22 min read
Blocking requests in a Chrome extension: a hands-on declarativeNetRequest tutorial
Build a Manifest V3 Chrome extension that blocks trackers and strips tracking parameters with declarativeNetRequest — full runnable code, ~30 minutes.
Maxim Kosterin
19 min read
Offscreen documents in Chrome extensions: how to use the DOM from an MV3 service worker
MV3 service workers have no DOM. Build a Chrome extension that parses HTML and writes to the clipboard from an offscreen document — runnable code, ~25 min.
Maxim Kosterin
19 min read
chrome.alarms in Manifest V3: background jobs that outlive the service worker
MV3 kills setInterval. Build a Chrome extension background job with chrome.alarms that survives service worker termination — full runnable code, ~20 min.
Maxim Kosterin
16 min read
Chrome extension side panels: build a UI that stays open while you browse
A hands-on Manifest V3 tutorial: build a Chrome extension side panel that persists across tabs, then make it per-site. Full runnable code, ~25 minutes.
Maxim Kosterin
13 min read