Add-ons foar Firefox Browser
  • Utwreidingen
  • Tema’s
    • foar Firefox
    • Wurdboeken en taalpakketten
    • Oare browserwebsites
    • Add-ons foar Android
Oanmelde
Foarbyld fan onHover — Developer Toolkit

onHover — Developer Toolkit troch onHover

25+ dev tools in one click: inspect elements, pick colors, screenshots, API tester, SEO analyzer, fonts & more — no DevTools needed.

0 (0 beoardielingen)0 (0 beoardielingen)
Firefox downloade en de útwreiding ûntfange
Bestân downloade

Metadata útwreiding

Skermôfbyldingen
Oer dizze útwreiding
Stop switching tabs. Stop opening DevTools. Everything you need to inspect, debug, and analyze any webpage is one click away.

onHover is a developer toolkit that runs directly on any page — no DevTools, no context switching.

━━━ ELEMENT INSPECTOR ━━━
• Hover over any element to see computed styles, dimensions, and box model
• Click to pin a detail panel — drag it anywhere on screen
• Inspect elements inside iframes
• Edit styles and text live on the page
• Hide or remove elements without touching the source
• Check WCAG contrast ratio and accessibility attributes
• Export the inspected element directly to CodePen

━━━ COLOR TOOLS ━━━
• Eyedropper — pick any pixel color in HEX, RGB, or HSL
• Color Palette extractor — pull every color used on the current page
• One-click copy to clipboard

━━━ SCREENSHOTS & RECORDING ━━━
• Full-page screenshots (stitches content beyond the visible viewport)
• Capture a specific element or draw a custom area
• Record the active tab as video (with optional mic audio)
• Save screenshots and recordings directly to your device

━━━ SEO & META TOOLS ━━━
• Inspect all meta tags, Open Graph, and Twitter Card data
• Preview how the page looks in Google, Twitter, and LinkedIn
• Audit heading hierarchy (H1–H6)
• Scan all links and flag broken or redirected URLs
• Analyse semantic elements and structured data

━━━ PERFORMANCE & INSIGHTS ━━━
• Live Core Web Vitals badge (FCP, LCP, CLS, TTFB) on every page
• Full page insights: load time, resource breakdown, render-blocking assets
• Simulate network conditions: Fast 3G, Slow 3G, Offline

━━━ DEVELOPER DEBUGGING ━━━
• Console panel with network request log — no DevTools needed
• API Tester: send GET, POST, PUT, DELETE requests right from the extension
• Custom Code Injector: inject persistent CSS/JS into any site
• Clear browsing data (cache, cookies, localStorage) for any time range
• DOM Tree viewer for quick structure inspection
• Redirect Path tracer — follow every hop of a redirect chain

━━━ FORMATTERS ━━━
• Sitemap Formatter: opens any XML sitemap as a clean table with URLs, last-modified dates, and priority scores — instead of raw XML
• JSON Formatter: automatically beautifies JSON responses in the browser with syntax highlighting, collapsible nodes, and one-click copy

━━━ FONTS & ASSETS ━━━
• Font Inspector: detect every font on the page with computed styles
• Assets Viewer: browse, preview, and download all images, videos, SVGs, and PDFs

━━━ DATA EXTRACTION ━━━
• Table Capture: export any HTML table to CSV
• Email Finder: extract all email addresses from a page
• Webpage to Markdown: convert any page to clean Markdown

━━━ PRODUCTIVITY ━━━
• Cookie Editor: view, add, edit, and delete cookies
• Open Multiple URLs at once
• Site Stack: detect the tech stack, CMS, and frameworks a site uses
• Built-in todo list that persists across sessions

━━━ NO DEVTOOLS REQUIRED ━━━
Everything runs inside the extension popup or directly on the page — no DevTools panel, no terminal, no extra apps.

Works on all websites including localhost, staging environments, and sites behind authentication.
Wurdearre: 0 troch 0 beoardielers
Meld jo oan om dizze útwreiding te wurdearjen
Der binne noch gjin wurdearringen

Stjer-wurdearring wurdt bewarre

5
0
4
0
3
0
2
0
1
0
Noch gjin beoardelingen
Tastimmingen en gegevens

Fereaske machtigingen:

  • Resinte browserskiednis, cookies en relatearre gegevens wiskje
  • Gegevens op it klamboerd pleatse
  • Bestannen downloade en downloadskiednis fan de browser lêze en oanpasse
  • Browserljepblêden benaderje
  • Jo gegevens foar alle websites benaderje

Opsjonele machtigingen:

  • Jo gegevens foar alle websites benaderje

Fereaske gegevenssamling, neffens de ûntwikkelder:

  • Website-aktiviteit
Mear ynfo
Mear ynformaasje
Add-on-keppelingen
  • Startside
  • Stipewebsite
  • E-mailadres foar stipe
  • Add-on-ID kopiearje
Ferzje
1.0.2
Grutte
3,12 MB
Lêst bywurke
4 dagen lyn (12 jun. 2026)
Sibbe kategoryen
  • Webûntwikkeling
  • Privacy en befeiliging
  • Foarmjouwing
Lisinsje
Alle rjochten foarbehâlden
Privacybelied
It privacybelied foar dizze add-on lêze
Ferzjeskiednis
  • Alle ferzjes besjen
Labels
  • download
  • privacy
  • security
  • user scripts
Tafoegje oan kolleksje
Dizze add-on rapportearje
Nei Mozilla’s startside

Add-ons

  • Oer
  • Firefox-add-onsblog
  • Utwreidingsworkshop
  • Untwikkelershub
  • Untwikkelersbelied
  • Mienskipsblog
  • Foarum
  • In bug melde
  • Beoardielingsrjochtlinen

Browser

  • Desktop
  • Mobile
  • Enterprise

Produkten

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Juridysk

Utsein oars vermeld, is op de ynhâld fan dizze website de Creative Commons Attribution Share-Alike License v3.0 of lettere ferzje fan tapassing.