All extensions

Local-first toolkit for understanding, comparing, auditing, extracting, and rebuilding web interfaces.

Ultimate Image Optimizer

Compress images locally in your browser with extreme privacy.

Umbraco Image Downloader

Download all lazy-loaded Umbraco images as a ZIP file

Uncounted

Exclude your own visits from Plausible Analytics, per site or everywhere. Unofficial, not affiliated with Plausible.

Under the Mark — Quick Add

Log a purchase in two taps, or let it spot your order confirmations. Everything stays on your device.

UniEnvironmentLabel

Floating label to indicatie the environment (Development, Test, Acceptance or Production).

Unix Timestamp Converter

Real-time Unix timestamp display with bidirectional conversion between timestamps and datetime

Unmask by Untitled

Con che tecnologia è fatto questo sito: CMS, framework, e-commerce, hosting. Gira solo quando clicchi l'icona.

Unrendered - AI Crawler Checker

AI crawler checker: see which content GPTBot, ClaudeBot and other AI crawlers can't read because it needs JavaScript.

unsight

Detect duplicate GitHub issues, areas of concern and more across related repositories

Unslop — stop your app looking AI-made

Audits your app against 60 documented signs of AI-generated design, then hands you the exact fixes to paste into your AI tool.

urchinbot

UrchinLoop Crypto Agent — local-first overlay for context capture, site building, Solana scanning, and Pump.fun launch assist.

UREAL — Is it real or AI?

Instantly detect AI-generated content on any website. Protect yourself from fake profiles and AI scams.

URL Auto-Copier

Copy the current tab's URL to your clipboard with one click.

URL Builder

一個用來生成帶 query 的 URL 的工具

URL Checker Navigator

Navigate through website URLs one by one for testing. Check if all pages work properly with customizable timing intervals.

URL Detective

Inspect, copy, and edit URLs from the popup: view and modify protocol, host, path segments, query parameters, and hash.

URL Highlighter

Destaca visualmente páginas com base em regras configuráveis de match contra a URL.

URL parameter display

Displays the URL parameters of the current page

URL Params

View and edit URL query parameters.

URL Shortener

Shorten URLs with ease.

URL Slug and Underscores Generator

Slug Generator to create clean SEO-friendly URLs with underscores or dashes Optimize your blog or website slugs instantly!.

url-trace Capture

Observes real network requests as you use an app, building url-trace audit records for URL allowlist policies. All local.

Usage Pacer

Pace your Cursor usage against the billing-cycle reset date.