Url Editor Pro

URL Editor Pro is a developer-focused toolkit for inspecting, editing, and rewriting URLs in your browser — without leaving the page or sending data to a server.

Built for engineers, QA, marketers, and anyone who works with URLs every day.

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WHAT YOU CAN DO
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📝 Edit any URL parameter inline
• Type-aware editing: numbers get a stepper, booleans a toggle, dates a calendar, lists a tag editor
• Auto-detects JWTs and Base64 in parameter values
• Add, remove, or rename parameters and apply with one click
• Live diff view showing exactly what changed before you navigate

🧹 One-click URL sanitizer
• Strip utm_source, utm_medium, utm_campaign, fbclid, gclid, msclkid, ttclid, igshid, mc_cid, dclid, and 25+ other tracking parameters
• See exactly which params got removed before applying

🌐 Environment switcher (dev → staging → prod)
• Define groups of equivalent domains (e.g., localhost:3000, staging.api.io, api.io)
• Switch the active environment from the popup; matching URLs are automatically rewritten across the entire browser
• Works for subdomains too — *.staging.api.io rewrites to *.api.io

🔍 Regex rules engine (declarativeNetRequest-powered)
• Append, replace, or remove URL parameters via regex matchers
• Replace whole URLs with backref support (\1, \2, …)
• Up to 5,000 dynamic rules per profile
• Test rules against any URL before saving
• Built-in presets: Force HTTPS, Remove UTM, Reddit Sort by New, Replace Domain
• Export and import rules as JSON to share with your team

🔐 JWT & Base64 inspector and builder
• Auto-decode JWTs and Base64 found in URL parameters
• Inspect JWT header, payload, expiry, and signature segment
• Build new JWTs with real HS256, HS384, or HS512 signing (uses Web Crypto)
• Encode and decode arbitrary Base64 (UTF-8 safe)

🧾 QR code generator
• Single QR for the current URL or any custom URL
• Batch mode: paste a list, get a ZIP of SVGs back
• Color customization (foreground & background)
• Optional center logo overlay
• Live URL preview, adjustable size

📒 Annotations
• Attach notes to specific URL parameters or domains
• Built-in glossary of 30+ tracking and analytics parameters
• Sees what tag, fbclid, gclid, irclickid, ttclid, etc. actually mean

⚡ Power-user features
• Cmd+K / Ctrl+K command palette — every action one keystroke away
• URL history panel — restore any of the last 25 URLs you visited or edited
• Optional cross-device sync via your Chrome account (rules and environments)
• 5-language support: English, Spanish, Japanese, Korean, Chinese

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PRIVACY-FIRST DESIGN
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URL Editor Pro runs entirely offline. We do not have a server. We do not send your URLs, rules, JWTs, annotations, or any other data anywhere.

• No account, no signup, no telemetry
• No ads, no trackers
• Your data lives in chrome.storage on your own device
• Optional sync uses Chrome's built-in account sync — never our infrastructure
• Open about every permission we request — see the manifest

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WHO IT'S FOR
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• Backend & full-stack developers debugging API calls and OAuth flows
• QA engineers running the same test across environments
• Affiliate marketers inspecting and cleaning campaign URLs
• Privacy-minded users who want share-clean URLs
• Anyone who has ever wished they could just edit a query parameter

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KEYBOARD SHORTCUTS
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• Cmd+K / Ctrl+K — Open the command palette from any tab
• Esc — Close any panel or palette

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PERMISSIONS — WHAT EACH ONE DOES
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• declarativeNetRequest — runs your regex rules inside Chrome's rule engine. We never see the URLs that match
• declarativeNetRequestFeedback — surfaces rule matches in the dev console (debugging only, unpacked builds)
• storage — saves your rules, environments, annotations, and history locally
• tabs — reads the URL of the active tab so you can edit it
• webNavigation — re-applies rules to URLs served from the back/forward cache
• <all_urls> — required by Chrome so your rules can match any site you visit. We never read page contents

We do NOT use:
✗ scripting (no content scripts, no page injection)
✗ contextMenus (no right-click items)
✗ identity, cookies, history, browsingData, or any other privacy-sensitive API

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WHAT'S NEW IN 1.4.0
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• Real HMAC-SHA256/384/512 JWT signing via Web Crypto
• One-click URL sanitizer (strip 30+ tracking parameters)
• Live parameter diff view
• URL history with one-click restore
• Cmd+K command palette
• Rule export/import as JSON
• Batch QR codes with color, logo, and ZIP download
• Cross-device sync of rules and environments
• Settings panel
• Localized for English, Spanish, Japanese, Korean, Chinese
• Hardened security: sender validation, scheme checks on navigation, ReDoS guard on user regex, CSP

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