Developer ToolsFree plan

Yellow Lab Tools

Yellow Lab Tools is an online audit of heavy web pages that checks performance practices and front-end code. It is free and open source.

Yellow Lab ToolsUpdated monthly · checked 27 h ago

Yellow Lab Tools is a developer tools perk from Yellow Lab Tools, free, open-source audit, with no funding required.

Who qualifies
No funding needed
Benefit type
Free plan
Apply at Yellow Lab Tools

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While you apply

Also useful for building and shipping apps

Applying to Yellow Lab Tools takes a few minutes. Referral links, picked for fit and ordered by fit (70%) and what a signup earns us (30%), at no cost to you. They never change this page's ranking.

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What you get

Inside Yellow Lab Tools

Yellow Lab Tools runs a page speed audit that checks whether performance good practices are respected, plus a front-end analysis of HTML, CSS, JS, images, fonts and more. You choose a phone, tablet or desktop device. Free and open source!

Source: The provider's official program page

Eligibility

Who it's for

Free planAny startup
Funding / backing
No funding needed
Geography
Global
Recurring / expiry
Free and open source with no end date stated.
Other requirements
Results depend on the simulated device you choose.
How to claim

How to apply for Yellow Lab Tools

Steps to apply
  1. 1Run an audit on yellowlab.tools.
  2. 2No application is needed.
Good to know: Plans read on yellowlab.tools on October 28, 2026.
Apply at Yellow Lab Tools

Source: The provider's official program page

Value is the headline maximum Yellow Lab Tools advertises. What your company actually receives depends on your eligibility and how you use the program, and terms can change. A comparison, not endorsed by the programs listed. A link labeled as a referral link may earn us a commission, and a program labeled Same owner comes from the company that runs StartupPerks. Confirm current terms on the provider's page.
Questions

Yellow Lab Tools: common questions

What do you get with Yellow Lab Tools?

Yellow Lab Tools is free, open-source audit.

Who qualifies for Yellow Lab Tools?

Yellow Lab Tools is open to any startup, with no funding required. Results depend on the simulated device you choose.

Do I need to be VC-backed or in an accelerator to get Yellow Lab Tools?

No. Yellow Lab Tools is open to any startup that meets the stated criteria, no investor or accelerator backing required.

How do I apply for Yellow Lab Tools?

Run an audit on yellowlab.tools. No application is needed.

How long do I have to use Yellow Lab Tools, and does it expire?

Free and open source with no end date stated.

Is Yellow Lab Tools available outside the US?

Yellow Lab Tools is available globally, subject to the provider's terms.

Free website speed test tools, comparedYellow Lab Tools's free plan next to every other free speed test toolWhat each speed test tool gives you free today, its main limit and what the first paid plan costs, read from each provider's own page.
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