Client Hints
Wednesday, January 28, 2026 11:00:00 AM
User-Agents & Client-Hints
Six Years On
User-Agent Client-Hints were always going to be a "tax" on the web. In this article we recap the history, unpack the current state, and look to the future.
Monday, October 7, 2024 12:00:00 PM
Fabricated Software Versions: ‘Android 10; K’, and similar instances
The software version number in a User-Agent header may not accurately reflect a legitimate software version or the actual device and software in use. In this blog, we provide a comprehensive explanation of these discrepancies, along with clear steps to ensure the most precise detection possible.
Wednesday, April 3, 2024 2:30:00 PM
The importance of detecting WebView
Understand where your content is being displayed
It’s important to consider both the User-Agent and User-Agent Client Hints when detecting WebView. Our device detection can easily do this for you.
Thursday, June 1, 2023 1:00:00 PM
Countdown to G-Day: the User-Agent reduction is complete
Device detection upgrade needed now
The User-Agent reduction has progressed to the final phase. All web device detection solutions that don’t support the User-Agent reduction and User-Agent Clients Hint must now be upgraded if they are to continue to function.
Wednesday, April 26, 2023 12:45:00 PM
OpenRTB's Structured User Agent and User-Agent Client Hints
How to convert SUA data into UA-CH, and vice versa
Version 2.6 of the OpenRTB specification introduces the Structured User Agent. This new Object: Device attribute addresses Google’s changes to the User-Agent and the new User-Agent Client Hints.
Wednesday, March 8, 2023 12:45:00 PM
Implementing User-Agent Client Hints: 3 different methods
The best method for you will depend on your business
Google has made preparing for the User-Agent reduction complicated, but 51Degrees provides the tools to make implementing User-Agent Client Hints simple.
Friday, February 24, 2023 10:30:00 AM
Google's revised plans for the User-Agent
User-Agent Client Hint (UA-CH) updates from the fourth CMA report
On 31 January, Google’s Q4 report to the UK CMA was released. The report provides much-needed updates on the User-Agent reduction and User-Agent Client Hints. We recap the key points from the report in this blog.
Monday, February 20, 2023 4:30:00 PM
Introducing the 51Degrees UAParser
We've expanded the 51Degrees product suite
The 51Degrees UAParser provides comprehensive device data based on User-Agent Client Hints and the User-Agent, and can reliably detect Apple iPhone models.
Monday, January 9, 2023 1:30:00 PM
Countdown to G-Day: Phase 6 of the User-Agent reduction
This is a fundamental change that will affect device detection as you know it
Chrome 110, due for release on 1 February 2023, will be the first Chrome version that has information removed from the mobile and tablet User-Agents. In essence, you will not be able to tell the difference between different mobile or tablet device models.
Monday, December 5, 2022 12:45:00 PM
Countdown to G-Day: <deviceCompat> and <unifiedPlatform>
Within the User-Agent reduction, Google has a new format for Chrome User Agent strings
Google is pressing ahead with the User-Agent reduction. From February 2023, Google will reduce the information within Chrome mobile and tablet User-Agent strings. Device information will only be available through User-Agent Client Hints.
