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Tampermonkey Website Full Guide (2026)

Popular browser extension for managing and running userscripts.

WebsiteDevelopmentChrome Extension
4.1 (AI Aggregated)
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Updated May 26, 2026

screenshot of Tampermonkey

Introduction

When a site hides useful actions behind repetitive clicks or missing shortcuts, Tampermonkey is often the tool people reach for. It runs custom userscripts in the browser, so you can change page behavior, add small automations, and patch rough edges in web apps without waiting for vendor updates. For developers and power users working across many internal tools, it is a practical way to standardize how specific pages behave.

From a Development > Website Scripts perspective, Tampermonkey fits best when you need reliable script execution across repeated sessions, clear controls over script scope, and low-friction script testing in real pages. Setup is usually quick for basic scripts, while long-term stability depends on careful match patterns and script maintenance as target sites change. Its long-standing ecosystem and script portability are major strengths, though script quality varies by source and should be reviewed before broad use.

Key Features

Core Capabilities

1

Runs JavaScript userscripts automatically on matched pages using URL pattern rules

2

Built-in script editor with metadata support (such as include/exclude matches and update links)

3

Per-script enable/disable controls and execution management for testing changes safely

4

Import/export support for script backup and migration between browser profiles or machines

5

Update checks for installed scripts when authors publish newer versions

Use Cases

For Frontend Engineer

Patch Internal Tool Friction

Adds keyboard shortcuts, inline links, or UI tweaks to repetitive admin pages where upstream product changes move slowly.

How to Use Tampermonkey

Install Tampermonkey in your browser

Use the extension store for your browser and confirm the extension is active.

Tampermonkey Alternatives

Tampermonkey Status

Active

Service is operational

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