Skip to main content
Joshua Marantz

Joshua Marantz
Member Technical Staff, Google

Website | @jmarantz

Joshua Marantz is a software engineer at Google, where he is tech-lead of mod_pagespeed, a project to build an open-source Apache module for automatically improving website latency and reducing bandwidth consumption by rewriting HTML, CSS, Javascript, and Images. At Google he has also worked on latency improvements in web caching infrastructure and scalable social networking. Prior to Google, Josh spent 20 years in the Electronic Design Automation industry, much of it working on accelerated functional simulation. He holds BS and MS degrees from MIT, in Computer Science and Engineering, and Electrical Engineering and Computer Science.


Mission City Ballroom
Joshua Marantz (Google)
Average rating: ***..
(3.80, 15 ratings)
Making the web fast feels like boiling an ocean, but that hasn't stopped us from trying. Read more.
Grand Ballroom ABCD
Joshua Marantz (Google)
Average rating: ****.
(4.18, 11 ratings)
Evolving mobile hardware and networks have made it challenging for web sites to deliver an optimal experience to each client. If you send the same image to both a WiFi Retina tablet and a 3G phone, you compromise speed and bandwidth cost against image quality. We'll look at using HTML and CSS image markup, CDNs, HTTP caching directives, and how WPO can deliver a great UX with minimal effort. Read more.