Created
March 6, 2026 12:14
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chrome extension to auto-increment cache busting query parameter in url
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| /** | |
| * Installation: chrome://extensions -> Load unpacked -> select folder | |
| * Bind Ctrl+Shift+R as a shortcut for "cachebust-refresh" in chrome://extensions/shortcuts | |
| */ | |
| function bust(tab) { | |
| if (!tab.url) return; | |
| const url = new URL(tab.url); | |
| const param = "_cacheBust"; | |
| const current = url.searchParams.get(param); | |
| if (current === null) { | |
| url.searchParams.set(param, "1"); | |
| } else { | |
| const next = parseInt(current, 10) + 1; | |
| url.searchParams.set(param, String(next)); | |
| } | |
| chrome.tabs.update(tab.id, { url: url.toString() }); | |
| } | |
| chrome.action.onClicked.addListener(bust); | |
| chrome.commands.onCommand.addListener(async (command) => { | |
| if (command === "cachebust-refresh") { | |
| const [tab] = await chrome.tabs.query({ | |
| active: true, | |
| currentWindow: true, | |
| }); | |
| if (tab) bust(tab); | |
| } | |
| }); |
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| { | |
| "manifest_version": 3, | |
| "name": "CacheBust Incrementer", | |
| "version": "1.1", | |
| "description": "Increment ?_cacheBust on the current URL.", | |
| "permissions": ["tabs"], | |
| "action": { | |
| "default_title": "Increment CacheBust" | |
| }, | |
| "background": { | |
| "service_worker": "background.js" | |
| }, | |
| "commands": { | |
| "cachebust-refresh": { | |
| "suggested_key": { | |
| "default": "Ctrl+Shift+R" | |
| }, | |
| "description": "Increment _cacheBust and reload" | |
| } | |
| } | |
| } |
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