Resource Hints Tester.

Test and optimize preload, prefetch, and preconnect hints for faster website loading.

Resource Hints Tester

Examples

Common

Google Fonts CSS
Preload Google Fonts stylesheet to prevent render blocking and improve font loading performance.
preload
style
Framework CSS
Preload essential framework CSS to prevent render blocking and improve initial paint.
preload
style

Performance

Font Provider Connection
Establish early connection to the font provider's domain for faster subsequent requests.
preconnect
font
API Endpoint
Preconnect to API endpoints to reduce connection setup time for dynamic data fetching.
preconnect
script

Best Practice

Hero Image
Preload hero image to ensure immediate visibility when needed in the viewport.
preload
image
Next Page Script
Prefetch JavaScript bundle for the next likely navigation destination.
prefetch
script

How it works

Four steps.

  1. 01

    Enter the URL of the resource you want to test.

  2. 02

    Choose a resource hint type: preload, prefetch, or preconnect.

  3. 03

    Generate the corresponding HTML tag and copy it.

  4. 04

    Simulate the resource loading impact with and without hints.

Features

Optimize Website Loading with Resource Hints.

Analyze the impact of preload, prefetch, and preconnect hints on your website’s loading speed.

  • Supports Multiple Resource Hints

    Test preload, prefetch, and preconnect hints for optimizing website load speed.

  • Easy HTML Tag Generation

    Automatically generate valid HTML hint tags for your selected resource type.

  • Performance Simulation

    Compare load times with and without resource hints to measure efficiency gains.

FAQ

Questions.

Can't find an answer? Send us your question.

What are resource hints?

Resource hints like preload, prefetch, and preconnect help browsers load assets more efficiently, improving performance.

Which hint type should I use?

Use preload for critical resources, prefetch for anticipated assets, and preconnect for early DNS/TLS connections.

How do I add a resource hint?

Copy the generated HTML tag and paste it inside your website's section.

Can this tool measure performance gains?

Yes, the simulation feature compares loading times with and without resource hints applied.

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Built by Infyways

Need more than a tool.

These utilities are made by the Infyways studio. When a free tool is not enough, we build the real thing.