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Engineering

Engineering

Deep technical write-ups from the BugMojo engineering team.

A laptop screen showing JavaScript code in a dark editor with Chrome DevTools open, illustrating browser extension development on Manifest V3
Engineering

Building a Bug Capture Browser Extension on Manifest V3

Engineering lessons from shipping a Chrome MV3 bug-capture extension: service worker death, rrweb buffering, MAIN-world hooks, and PII redaction at the edge.

May 22, 2026· 16 min
A circuit board representing the low-level machinery of DOM serialization for browser session replay
Engineering

How rrweb Works: A Deep Dive into Browser Session Recording

A 2026 engineering deep dive into rrweb — how the open-source library captures DOM mutations, inputs, and scroll into a replay-able session timeline.

May 22, 2026· 6 min
A partially obscured keyboard representing privacy and PII redaction in software
Engineering

PII Redaction in Session Replay: Patterns That Work in Production

How to redact PII from rrweb session replays, console logs, and network HAR data — GDPR and CCPA-compliant patterns we ship in production at BugMojo.

May 22, 2026· 7 min