Google has launched a faster and more accurate version of its search engine.
Known as caffeine, the changes have been in secret development at the firm for several months, but it has now opened the programme up to gather feedback from developers.
The changes mainly focus on "under the hood" improvements, Google said in a blog post, adding that while many users will not see any changes, the alterations may be beneficial for "web developers and power searchers".
"It's the first step in a process that will let us push the envelope on size, indexing speed, accuracy, comprehensiveness and other dimensions," the company stated, adding that some parts of the system are yet to be finished.
Google has asked participants to provide feedback on the differences between the new system and the current search results and has urged web users to highlight sites whose rankings are altered due to the changes.
Director of search marketing firm Trafficbroker Martin McNulty noted that the service is "undoubtedly faster", adding that it is "almost twice as fast" on occasions.
The move follows the changes that Google introduced to its Image Search service earlier this month.
It added functions that let users search for pictures by colour and size.
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