device detection

A customer who opens 51degrees.com/json and pastes the result into a ticket tells support which browser, operating system, and device they're on, and their network and rough location, without being asked one question at a time.

A browser's yes to AV1 can mean software decoding on the CPU. Measure the share of your viewers with a hardware decoder before you pay for another format.

Before deciding which OpenAI crawlers to block check what each one is doing. According to OpenAI's documentation GPTBot is the one that gathers the training data.

Daily visits to one website went up by about half in a week while likely human visits stayed level. Retailers can use Human Confidence to decide who sees their prices.

AI agents are starting to sign their requests under the Web Bot Auth drafts at the IETF, ChatGPT among them. The 51Degrees agent signature properties report whether the proof checked out, so you can let a verified agent in and keep the copycats out.

Human Confidence tells you, in one word and in real time, how sure you can be that a person is viewing the page.

There is now a third kind of visitor, and it fits neither box. Autonomous AI agents drive genuine Chrome, on genuine laptops, over genuine residential connections, so nothing in the request is fake and every check you already run passes. HumanConfidence reads eight device and network signals in one call and returns High, Medium, or Low, with the recipe published so you can check the working yourself.

Applications, proxies, and analytics platforms often lowercase or otherwise normalize User-Agent strings before they are processed. This blog explains why a User-Agent is structured data rather than ordinary text, what is lost when it is modified, and the best practice for keeping device detection accurate.

This blog explains how Naver’s web crawlers, including Yeti, Ads-Naver, and Blueno, interact with website content. It outlines their different roles, the crawler usage values assigned to each, and how they affect content visibility across Naver’s search and services.

What actually counts as connected TV? We checked more than 11 million OpenRTB impressions with Device Detection and found nearly 5% of inventory sold as CTV isn't CTV at all, mislabeling that could be costing advertisers close to $2 billion a year.