# Chrome achieves highest score ever on Speedometer 3.1, saving users millions of hours

DevFeed: [Chrome achieves highest score ever on Speedometer 3.1, saving users millions of hours](<https://devfeed.tech/articles/chrome-achieves-highest-score-ever-on-speedometer-3-1-saving-users-millions-of-hours-4194.md>)

Original publisher: [Read original article](<https://blog.chromium.org/2025/06/chrome-achieves-highest-score-ever-on.html>)

Author: Chromium Blog (noreply@blogger.com)

Published: 2025-06-05T17:00:00Z

Content type: article

Language: en

Sources: [Chromium Blog](<https://devfeed.tech/sources/chromium-blog.md>)

Topics: [Chrome](<https://devfeed.tech/topics/chrome.md>), [Benchmark](<https://devfeed.tech/topics/benchmark.md>), [web applications](<https://devfeed.tech/topics/web-applications.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Optimization](<https://devfeed.tech/topics/optimization.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [apple](<https://devfeed.tech/tags/apple.md>), [benchmark](<https://devfeed.tech/tags/benchmark.md>), [benchmarks](<https://devfeed.tech/tags/benchmarks.md>), [browser](<https://devfeed.tech/tags/browser.md>), [chrome](<https://devfeed.tech/tags/chrome.md>), [css](<https://devfeed.tech/tags/css.md>), [html](<https://devfeed.tech/tags/html.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [json](<https://devfeed.tech/tags/json.md>), [macos](<https://devfeed.tech/tags/macos.md>), [none](<https://devfeed.tech/tags/none.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [performance](<https://devfeed.tech/tags/performance.md>), [the-fast-and-the-curious](<https://devfeed.tech/tags/the-fast-and-the-curious.md>), [web-performance](<https://devfeed.tech/tags/web-performance.md>)

## AI overview

Chrome reports a 22% improvement on the Speedometer 3.1 benchmark since August 2024, achieving its highest score to date. The article explains that the work optimized rendering paths and components involved in web application responsiveness, including HTML parsing, JavaScript and JSON processing, DOM interaction, CSS layout, pixel rendering, and internal data structures.

## Source excerpt

Update (6/10/2025): This blog was updated to reflect that testing was done using the Speedometer 3.1 benchmark, and resulted in a 22% performance improvement. The previous version incorrectly noted that the performance improvement was 10% and that the benchmark was Speedometer 3. Performance has always been one of the core pillars of Chrome and it's something we've never stopped investing in. Publicly available and open benchmarks, which we create in open collaboration with other browsers, are useful tools for tracking our overall progress, understanding new areas of improvement, and validating potential optimizations. In today's The Fast and the Curious post, we'd like to go through Chrome's recent work that enabled it to achieve the highest score ever on the Speedometer benchmark. For Speedometer, these optimizations have resulted in a 22% improvement since August 2024. That 22% improvement leads to better browser experiences, higher conversions for businesses, and deeper enjoyment of what the web has to offer. If each Chrome user used Chrome for just 10 minutes a day, these improvements collectively save 116 million hours or roughly 166 lifetimes worth of waiting around for websites to load and do things. Speedometer 3.1 score measured on Apple Macbook Pro M4 with MacOS 15 Speedometer is a benchmark created in open collaboration with other browsers and measures web application responsiveness through workloads that cover a large variety of different areas of the Blink rendering engine used in Chrome: HTML parsing JavaScript and JSON processing JavaScript and Document Object Model (DOM) interaction DOM manipulations (element insertion and removal) Text size computation (font shaping) Cascading Style Sheet (CSS) application and layout calculation Pixel rendering In essence, Speedometer tests critical components of the entire rendering pipeline. For a deeper dive into these individual parts, we recommend the presentation Life of a Script at Chrome University. Achievi