\n\nSmart & Safe\n- Works with dynamically injected scripts\n- Per-origin state means production sites stay in PROD while you test elsewhere\n- Network-level redirects using Manifest V3's Declarative Net Request API\n\n💡 Perfect For\n- Frontend Developers: Test local changes on production pages instantly\n- QA Engineers: Switch between staging and production without browser profiles\n- DevOps Teams: Debug script issues across environments in real-time\n- Anyone who's tired of: Constant URL swaps, multiple browser profiles, or commenting/uncommenting script tags\n\n⚡ Get Started in Seconds\n- Install the extension\n- Add dev-src/test-src attributes to your script tags\n- Click the extension icon and choose your environment\n- Reload the page—scripts now load from your selected source\n- That's it. No configuration files. No build steps. No complexity.\n\n🛡️ Privacy & Security\n- Stores only URL mappings locally—no data collection\n- Works entirely on your device\n- Manifest V3 compliant\n\nStop switching browser profiles. Stop editing production code. Stop wasting time. Start developing smarter with Sygnal Devmode.","author":{"@type":"Organization","name":"sygnal.com"},"offers":{"@type":"Offer","price":"0","priceCurrency":"USD"}}
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Description
Toggle DEV/TEST/PROD and rewrite external script src to dev-src/test-src values or redirect via DNR. Transform how you test and debug web applications across environments. Sygnal Devmode gives developers superpowers: switch between development, testing, and production script sources with a single click—no code changes, no deployments, no hassle. 🚀 What Makes It Special Instant Environment Switching Toggle between DEV, TEST, and PROD modes from your toolbar. Changes apply per-origin, so you can test multiple sites simultaneously without conflicts. Visual Clarity 🔴 Red dot = DEV mode active 🟡 Yellow dot = TEST mode active 🟢 Green dot = PROD mode (default) Page titles show colored dots so you always know which environment you're in Zero Code Changes Just add dev-src and test-src attributes to your script tags once. The extension handles the rest—rewriting URLs on the fly using Chrome's native redirect engine. <script src="https://cdn.example.com/prod/app.js" dev-src="http://localhost:3000/app.js" test-src="https://test-cdn.example.com/app.js"> </script> Smart & Safe - Works with dynamically injected scripts - Per-origin state means production sites stay in PROD while you test elsewhere - Network-level redirects using Manifest V3's Declarative Net Request API 💡 Perfect For - Frontend Developers: Test local changes on production pages instantly - QA Engineers: Switch between staging and production without browser profiles - DevOps Teams: Debug script issues across environments in real-time - Anyone who's tired of: Constant URL swaps, multiple browser profiles, or commenting/uncommenting script tags ⚡ Get Started in Seconds - Install the extension - Add dev-src/test-src attributes to your script tags - Click the extension icon and choose your environment - Reload the page—scripts now load from your selected source - That's it. No configuration files. No build steps. No complexity. 🛡️ Privacy & Security - Stores only URL mappings locally—no data collection - Works entirely on your device - Manifest V3 compliant Stop switching browser profiles. Stop editing production code. Stop wasting time. Start developing smarter with Sygnal Devmode.