Playwright Proxy Debugging: Why Your Script Works Locally but Fails With Proxies

Short summary

Playwright proxy failures often stem from authentication, context mapping, environment mismatches, or browser mode differences—not the proxy itself. Implement a staged debugging approach: test simple endpoints first, verify credentials in isolation, ensure explicit proxy-to-context mapping. Use controlled comparisons (same account, proxy, profile, storage state) between visible and headless runs to isolate root causes.

• •Proxy failures are usually misconfiguration or context mapping issues, not broken proxies
• •Use staged debugging: simple IP checks first, then target page, then full workflow
• •Verify credentials work in isolation; watch for shell escaping and special character handling
• •Map accounts → profiles → contexts → proxies explicitly to avoid confusion
• •Control variables when comparing visible vs headless modes to isolate the actual issue

Generated with AI, which can make mistakes.