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Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Information for developing and testing of software for HMRC forms, returns and messages.
Testing frontend performance so users can access your service quickly.
How to test your service's security using third parties and members of your team.
This guidance is designed to help IT support staff who manage the school's ICT network prepare for check administration.
How to test your service so that it works for users - even when there are high levels of traffic.
How to test your service to make sure it's accessible to disabled users.
Provides guidance on planning for retail and other town centre uses.
How to assure service quality: types of testing, automation, technical debt, hiring specialists.
How to test your service for different browsers and devices: user needs, verified browsers, adapting to change.
Explore a system as a user would - without a script or set of tasks - to find possible defects that other forms of testing may miss.
Find HMRC payroll test data for software developers.
How to build web pages so they work in HTML first: starting with HTML, extra styles and features, using JavaScript.
Manage your dependencies to keep code up to date, your system secure and your service working as intended.
The technical content style guide covers the style, structure and terms you should use when writing content for technical users on GOV.UK.
Data Provisioning Service technical specifications for software developers, including tax code, student loan and generic notifications.
Returns technical specifications for Self Assessment Online software developers.
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