Epupp: Live Tamper your Web

Overview

Make web pages you visit behave like you want them to with live tampering, or with userscripts, TamperMonkey style.

Epupp lets you tamper with web pages, live and/or with userscripts. It has two modes of operation: 1. Live REPL connection from your editor to the web page, letting you inspect and modify the page on the fly, with or without the assistance of an AI agent. 2. Userscripts: Tampermonkey style. Saved scripts that you can run, automatically or manually, on pages you visit. The two form a powerful pair. The live REPL connection, while happily supporting one-off changes or data extractions, is also a very efficient and fun means to interactively develop userscripts.

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Details

Version
0.0.11
Updated
March 7, 2026
Flag concern
Offered by
pez
Size
651KiB
Languages
English
Developer
Email
pez@pezius.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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Anima: Clone website & capture elements

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Convert private or internal web pages into editable React/HTML or start vibe coding on it

QuickFlip

4.6

A simple extension to flip webpages horizontally or vertically

Custom Style Script

4.2

Add Custom JavaScript (JS) Code or Styles (CSS) to any page.

HTML Viewer

4.7

Use HTML Viewer to view HTML with an online page-code preview and CSS inspector for website markup analysis

SnipCSS

3.9

Extract the CSS/HTML for any element on any page, only take the styles you want

Run Javascript

4.1

Run custom Javascript, each time you visit a website

Content Edit & Blur

4.6

Easily edit, replace or blur elements on any webpage

User-Agent Switcher Pro

0.0

Spoof websites tracking your browser to control or personalize web content

cssPicker - copy css from website

2.8

copy html and css from any website

Page Manipulator

3.6

Inject HTML, CSS or JavaScript into any web-page. The changes you make are applied every time you visit the specified website(s).