sitespeedio/sitespeed.io

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sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

Stars: 5k
Forks: 624
Open beginner issues: 0
Indexed issues: 137
Avg merge: 4h 8m
Merged PRs (30d): 2

Dominant language: JavaScript
License: MIT
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

Open All

137 open issues indexed

Add CrUX Ads Metrics Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

sitespeedio/sitespeed.io#4895 · 2 comments · Opened Sep 16, 2026
Soft navigations: Total Blocking Time is document-cumulative, not per route Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

sitespeedio/sitespeed.io#4892 · Opened Sep 9, 2026
32 Critical CVEs in 41.3.3-plus1 sitespeedio Docker image - detected in the AWS ECR scans Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4796 · 1 comment · Opened Jun 26, 2026
sitespeedio.plugin.compare crash Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

sitespeedio/sitespeed.io#4712 · 1 comment · Opened May 9, 2026
Sitespeed test not generating a proper report Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

sitespeedio/sitespeed.io#4612 · 2 comments · Opened Apr 7, 2026
Adding support for sending results to OpenSearch Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4593 · Opened Feb 26, 2026
npm-shrinkwrap.json causing issues with internal npm registry Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

sitespeedio/sitespeed.io#4592 · Opened Feb 25, 2026
resultURL generates a YYYY-mm-dd-xx-xx-xx folder, how to access that in grafana ? Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4591 · 1 comment · Opened Feb 18, 2026
How to add P75 and P85 along with the P90 measurements ? Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

sitespeedio/sitespeed.io#4586 · 3 comments · Opened Jan 20, 2026
Cache not disabled on Chrome browser when passing disable arguments Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

sitespeedio/sitespeed.io#4580 · 2 comments · Opened Jan 13, 2026
Understanding power measurement better Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4569 · 11 comments · Opened Nov 18, 2025
temp files are not cleanuped Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4567 · 2 comments · Opened Nov 5, 2025
Save baseline automatically if no baseline already exists Open

sitespeedio/sitespeed.io#4561 · 1 assignee · Opened Oct 23, 2025
Graphite data not visible after running Sitespeed.io with Graphite configuration Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sitespeedio/sitespeed.io#4560 · 1 comment · Opened Oct 20, 2025
Cumulative Layout Shift metric not shown on summary or detailed page when value is 0 Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

sitespeedio/sitespeed.io#4547 · Opened Sep 3, 2025
Issue with coach core when using alongside sitespeed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4546 · 3 comments · Opened Sep 1, 2025
I need a piece of advice on PerformanceResourceTiming Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

sitespeedio/sitespeed.io#4527 · 2 comments · Opened Jun 21, 2025
Add an option for dropping some headers from browser messages, from the har logs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4526 · 1 comment · Opened Jun 4, 2025
sitespeedio reporting LCP element incorrectly in the docker version Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

sitespeedio/sitespeed.io#4517 · 9 comments · Opened May 16, 2025
Tab Loads Instead of a Page Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4504 · 5 comments · Opened Apr 24, 2025
Specify multiple plugin names separated by comma doesn't work Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

sitespeedio/sitespeed.io#4486 · 1 comment · Opened Mar 19, 2025
How do I have Axe.core run only on the first iteration of s SiteSpeed test? Open

feature request

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4481 · 1 comment · Opened Mar 14, 2025
Change JSON-API datasource plugin to Infinity datasource Open

feature request

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

sitespeedio/sitespeed.io#4476 · 1 reaction · Opened Mar 11, 2025
Pass multiple visualElements Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sitespeedio/sitespeed.io#4458 · 1 comment · Opened Mar 3, 2025
VisualMetrics not capturing metrics for all transactions. Reporting 0ms for few transactions Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4443 · 3 comments · Opened Feb 21, 2025
lighthouse + npm + inside docker using shell file provided for npm installs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4442 · 7 comments · Opened Feb 20, 2025
Firefox CPU measurement to pageSummaryMetrics Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4434 · 2 comments · Opened Feb 11, 2025
Sitespeed not working with Shadow root elements capturing Open

awaiting response

Difficulty 4/5 3-5 days Newbie friendliness 20/100

sitespeedio/sitespeed.io#4421 · 5 comments · Opened Jan 29, 2025
Lighthouse plugin make the process exit on latest build Open

awaiting response bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4403 · 4 comments · Opened Jan 14, 2025
VisualMetrics failed to run ExecaError Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4400 · 5 comments · Opened Jan 10, 2025
Install sitespeed.io using Node.JS Open

awaiting response

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4399 · 12 comments · Opened Jan 10, 2025
my repeated test dosen't show in grafan Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

sitespeedio/sitespeed.io#4348 · 12 comments · Opened Dec 22, 2024
[Feature] Add a flag opposite to userTimingWhitelist to specify what to block. Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

sitespeedio/sitespeed.io#4344 · 3 comments · Opened Dec 20, 2024
node-static package is vulnerable,How to bypass this dependency Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4330 · 5 comments · Opened Dec 6, 2024
CPU measurements seem not to reset between measurements (scripting) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4329 · 3 comments · Opened Dec 1, 2024
CSS selector command to click and add text in sitespeed.io Open

Difficulty 4/5 3-5 days Newbie friendliness 22/100

sitespeedio/sitespeed.io#4326 · 1 comment · Opened Nov 25, 2024
I'm getting "ERROR: Could not add meta data to the HAR error" while running in Git Hub. Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

sitespeedio/sitespeed.io#4325 · 8 comments · Opened Nov 25, 2024
Check if you can run compare tests against different id:s Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

sitespeedio/sitespeed.io#4317 · Opened Nov 13, 2024
Fails if CrUX data not found Open

awaiting response bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4306 · 1 comment · Opened Oct 25, 2024
same values in google web vitals across transactions Open

awaiting response

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4297 · 14 comments · Opened Oct 14, 2024
adding to extra's field in plugin makes comparison mode fail Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4292 · 6 comments · Opened Oct 10, 2024
Error stopping measurement: Invalid time value Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4285 · 12 comments · Opened Oct 3, 2024
Waterfall is not getting loaded Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4276 · 1 comment · Opened Sep 16, 2024
Retrieve a run context inside a pre/post script Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

sitespeedio/sitespeed.io#4274 · 3 comments · Opened Sep 12, 2024
analysisstorer plugin options list Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4270 · 1 comment · Opened Sep 9, 2024
Only the logs and pages directories are generated in the locally persisted sitespeed-result/ directory at the end of the container run, with the other directory files missing Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4262 · 4 comments · Opened Aug 28, 2024
preUrl and preWarmServer don't inherit headers Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

sitespeedio/sitespeed.io#4258 · 1 comment · Opened Aug 21, 2024
Filmstrip images and video not available for 1 page in a script Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 20/100

sitespeedio/sitespeed.io#4256 · 5 comments · Opened Aug 17, 2024
Waterfall, metrics and median reporting questions Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

sitespeedio/sitespeed.io#4255 · 1 comment · Opened Aug 13, 2024
Caught error from Browsertime Error: Cannot find module ‘selenium-webdriver’ Require stack: Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 25/100

sitespeedio/sitespeed.io#4249 · 3 comments · Opened Jul 31, 2024

sitespeedio/sitespeed.io

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