New open source robots.txt projects

Ecompromo | September 21, 2020 | SEO Resources

Last year we released the robots.txt parser and matcher that we use in our production systems to the open source world. Since then, we’ve seen people build new tools with it, contribute to the open source library (effectively improving our production systems- thanks!), and release new language versions like golang and rust, which make it easier for developers to build new tools.

With the intern season ending here at Google, we wanted to highlight two new releases related to robots.txt that were made possible by two interns working on the Search Open Sourcing team, Andreea Dutulescu and Ian Dolzhanskii.

Robots.txt Specification Test

First, we are releasing a testing framework for robots.txt parser developers, created by Andreea. The project provides a testing tool that can validate whether a robots.txt parser follows the Robots Exclusion Protocol, or to what extent. Currently there is no official and thorough way to assess the correctness of a parser, so Andreea built a tool that can be used to create robots.txt parsers that are following the protocol.

Java robots.txt parser and matcher

Second, we are releasing an official Java port of the C++ robots.txt parser, created by Ian. Java is the …read more

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