WebPageTest

Pricing type: Free with Paid Tire
A web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.
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Description

The classic open-source web performance suite recently had an overhaul to suggest actionable opportunities, based on your test results, to quickly improve website performance for free. Each test can be run from different locations around the world, on real browsers, over any number of customizable network conditions.

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