5.0.0 (2019-05-07)

Major new features

Stack packs are a new way to present stack-specific advice within the Lighthouse report. This initial version detects if a site is running on WordPress and adds additional information to the report on how to take advantage of Wordpress plugins and configuration to improve performance (#7243, #8169, #8633, #8536, #8778).

Performance budgets are a new feature of Lighthouse to help prevent your site performance from regressing over time. Set budgets for the resources a page should load and have Lighthouse alert if the budgets aren't met (#8539, #8522, #8727, #8709, #8427, #8708).

Lighthouse plugins are a new way to add custom checks to a Lighthouse run. They are presented in the Lighthouse report alongside (or instead of) the standard results, and can leverage tools and results within Lighthouse to get their job done. See the docs for examples (#8728).

In case you haven't noticed after all the screenshots, the HTML report has been redesigned!

apple-touch-icon PWA audit (#8857)
performance-budget (#8539)
resource-summary (#8522)
max-potential-fid (previously in the JSON output, new in the HTML report) (#8729, #8817)

Node 10 (LTS) or later is now required (#8117)
rawValue has been removed from audit results. If the audit had a meaningful numeric result (like a metric), this result will now be on numericValue (#8343, #8385, #8421)
The accessibility category scoring has been reweighted based on severity (#8823)
FCP accuracy has improved (in 'simulation' throttling) and may noticeably affect scores (#7513)
The deprecated --disable-device-emulation flag has been removed. Use --emulated-form-factor (#8289, #8334)
The dom-size now ignores elements in <head> and limits scoring to only DOM nodes in the body (#7241)
The diagnostics audit details have had their type value changed to debugdata (#8298)
The format of the screenshot-thumbnails screenshots has changed. They are now a full image data URL (#8299)

Thanks to @arnabsen, @housseindjirdeh, @MarkelFe, @muuvmuuv, and @Meggin for their first contributions!

redesign: three dots for export button (#8629)
redesign: design review feedback (#8785)
redesign: whitespace, font weights (#8820, #8891, #8592, #8591, #8531, #8528)
make v5 renderer compatible with v3 and v4 LHRs (#8822)
redesign: fireworks (#8660)
redesign: add toggle control to show metric descriptions (#8661, #8844)
add table filter for third-party urls (#6351)
redesign: remove units from table column headings (#8658))
redesign: hide sparkline in mobile (#8562)
redesign: add dark theme (#8425, #8843, #8845, #8842)
redesign: add sticky scores header (#8524, #8883)
redesign: runtime settings footer (#8229)
add missing (#8240)
redesign: new gauges, score scale, category headers, variables (#8121, #8300, #8329, #8307, #8222, #8529, #8532, #8590, #8653, #8720, #8722, #8763, #8872)
extract init() function from report-template (#8228)