Page Speed Analyzer API

API ID 479

Be able to run an extensive analysis of your page speed with this API. Ideal to know about your page performance.

100% uptime 11,821 ms avg response

API Documentation

Endpoints

Request

Pass the URL to analyze and receive an extensive report about its speed performance. 

Endpoint ID: 361
GET https://pr213-testing.zylalabs.com/api/479/page+speed+analyzer+api/361/analyze
INPUT PARAMETERS

Analyze — Endpoint Features

Object Description
url Required The URL to lookup.

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

url
API EXAMPLE RESPONSE
JSON
{"redirects":{"id":"redirects","title":"Avoid multiple page redirects","description":"Redirects introduce additional delays before the page can be loaded. [Learn how to avoid page redirects](https:\/\/developer.chrome.com\/docs\/lighthouse\/performance\/redirects\/).","score":1,"scoreDisplayMode":"numeric","details":{"type":"opportunity","headings":[],"overallSavingsMs":0,"items":[]},"numericValue":0,"numericUnit":"millisecond"},"bootup-time":{"id":"bootup-time","title":"Reduce JavaScript execution time","description":"Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. [Learn how to reduce Javascript execution time](https:\/\/developer.chrome.com\/docs\/lighthouse\/performance\/bootup-time\/).","score":0.71,"scoreDisplayMode":"numeric","displayValue":"2.3\u00a0s","details":{"summary":{"wastedMs":2266.8879999999776},"items":[{"total":1799.0039999999779,"scriptParseCompile":127.14,"scripting":1535.9699999999775,"url":"https:\/\/www.gstatic.com\/recaptcha\/releases\/vm_YDiq1BiI3a8zfbIPZjtF2\/recaptcha__en.js"},{"scripting":16.251000000000005,"scriptParseCompile":3.8120000000000003,"url":"https:\/\/sheetsformarketers.com\/","total":195.12},{"total":121.04800000000051,"scriptParseCompile":0,"scripting":3.471,"url":"Unattributable"},{"scriptParseCompile":3.402,"total":119.10199999999999,"scripting":99.97699999999999,"url":"https:\/\/www.google.com\/recaptcha\/api2\/anchor?ar=1&k=6LdYsmsUAAAAAPXVTt-ovRsPIJ_IVhvYBBhGvRV6&co=aHR0cHM6Ly9zaGVldHNmb3JtYXJrZXRlcnMuY29tOjQ0Mw..&hl=en&type=image&v=vm_YDiq1BiI3a8zfbIPZjtF2&theme=light&size=invisible&cb=xe09611okztf"},{"total":109.85100000000003,"scriptParseCompile":2.59,"url":"https:\/\/sheetsformarketers.com\/wp-content\/cache\/minify\/818c0.js","scripting":62.01600000000002},{"url":"https:\/\/eocampaign1.com\/form\/6dac87d4-72bc-11ec-96e5-06b4694bee2a.js","scriptParseCompile":11.311,"scripting":62.021000000000015,"total":104.23200000000003},{"total":103.515,"scriptParseCompile":3.164,"scripting":75.52399999999999,"url":"https:\/\/www.google.com\/recaptcha\/api2\/anchor?ar=1&k=6LdYsmsUAAAAAPXVTt-ovRsPIJ_IVhvYBBhGvRV6&co=aHR0cHM6Ly9zaGVldHNmb3JtYXJrZXRlcnMuY29tOjQ0Mw..&hl=en&type=image&v=vm_YDiq1BiI3a8zfbIPZjtF2&theme=light&size=invisible&cb=ld6pjrnp7iyf"},{"total":102.88900000000004,"scriptParseCompile":2.7460000000000004,"url":"https:\/\/www.google.com\/recaptcha\/api2\/anchor?ar=1&k=6Leuo8wZAAAAAI6qa0Ivsum1Ten4Spq4k3sxc0-Y&co=aHR0cHM6Ly9zaGVldHNmb3JtYXJrZXRlcnMuY29tOjQ0Mw..&hl=en&v=vm_YDiq1BiI3a8zfbIPZjtF2&size=invisible&cb=1nadyyjsys6a","scripting":79.74800000000005},{"scriptParseCompile":4.175,"url":"https:\/\/www.googletagmanager.com\/gtag\/js?id=G-TF14GSSVXK","total":85.43399999999997,"scripting":79.85099999999998},{"scriptParseCompile":3.228,"url":"https:\/\/www.google.com\/recaptcha\/api2\/bframe?hl=en&v=vm_YDiq1BiI3a8zfbIPZjtF2&k=6LdYsmsUAAAAAPXVTt-ovRsPIJ_IVhvYBBhGvRV6","total":73.75199999999998,"scripting":29.64399999999999},{"scriptParseCompile":4.301,"url":"https:\/\/www.googletagmanager.com\/gtag\/js?id=G-VGLDXTHD1Q&l=dataLayer&cx=c","total":61.38100000000004,"scripting":56.54600000000004}],"type":"table","headings":[{"valueType":"url","key":"url","label":"URL"},{"granularity":1,"key":"total","valueType":"ms","label":"Total CPU Time"},{"valueType":"ms","granularity":1,"label":"Script Evaluation","key":"scripting"},{"key":"scriptParseCompile","granularity":1,"valueType":"ms","label":"Script Parse"}],"sortedBy":["total"]},"numericValue":2266.8879999999776,"numericUnit":"millisecond"},"uses-long-cache-ttl":{"id":"uses-long-cache-ttl","title":"Uses efficient cache policy on static assets","description":"A long cache lifetime can speed up repeat visits to your page. [Learn more about efficient cache policies](https:\/\/developer.chrome.com\/docs\/lighthouse\/performance\/uses-long-cache-ttl\/).","score":0.95,"scoreDisplayMode":"numeric","displayValue":"11 resources found","details":{"skipSumming":["cacheLifetimeMs"],"headings":[{"key":"url","valueType":"url","label":"URL"},{"valueType":"ms","label":"Cache TTL","displayUnit":"duration","key":"cacheLifetimeMs"},{"valueType":"bytes","label":"Transfer Size","key":"totalBytes","displayUnit":"kb","granularity":1}],"sortedBy":["totalBytes"],"type":"table","items":[{"totalBytes":21503,"cacheHitProbability":0.25,"cacheLifetimeMs":7200000,"url":"https:\/\/www.google-analytics.com\/analytics.js","debugData":{"max-age":7200,"type":"debugdata","public":true},"wastedBytes":16127.25},{"cacheLifetimeMs":604800000,"url":"https:\/\/static.getclicky.com\/js","wastedBytes":584.6999999999998,"cacheHitProbability":0.9,"totalBytes":5847,"debugData":{"max-age":604800,"type":"debugdata"}},{"cacheLifetimeMs":604800000,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/logo_48.png","cacheHitProbability":0.9,"totalBytes":2985,"debugData":{"public":true,"type":"debugdata","max-age":604800},"wastedBytes":298.49999999999994},{"totalBytes":2985,"cacheHitProbability":0.9,"wastedBytes":298.49999999999994,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/logo_48.png","debugData":{"public":true,"type":"debugdata","max-age":604800},"cacheLifetimeMs":604800000},{"cacheLifetimeMs":604800000,"totalBytes":2985,"debugData":{"max-age":604800,"type":"debugdata","public":true},"wastedBytes":298.49999999999994,"cacheHitProbability":0.9,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/logo_48.png"},{"cacheHitProbability":0.9,"cacheLifetimeMs":604800000,"wastedBytes":141.99999999999997,"totalBytes":1420,"debugData":{"max-age":604800,"type":"debugdata","public":true},"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/info_2x.png"},{"wastedBytes":141.99999999999997,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/info_2x.png","totalBytes":1420,"cacheLifetimeMs":604800000,"debugData":{"type":"debugdata","public":true,"max-age":604800},"cacheHitProbability":0.9},{"debugData":{"public":true,"max-age":604800,"type":"debugdata"},"wastedBytes":135.49999999999997,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/refresh_2x.png","cacheHitProbability":0.9,"totalBytes":1355,"cacheLifetimeMs":604800000},{"wastedBytes":135.49999999999997,"cacheHitProbability":0.9,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/refresh_2x.png","cacheLifetimeMs":604800000,"debugData":{"type":"debugdata","max-age":604800,"public":true},"totalBytes":1355},{"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/audio_2x.png","cacheLifetimeMs":604800000,"cacheHitProbability":0.9,"totalBytes":1285,"debugData":{"type":"debugdata","max-age":604800,"public":true},"wastedBytes":128.49999999999997},{"wastedBytes":128.49999999999997,"cacheLifetimeMs":604800000,"totalBytes":1285,"url":"https:\/\/www.gstatic.com\/recaptcha\/api2\/audio_2x.png","cacheHitProbability":0.9,"debugData":{"public":true,"max-age":604800,"type":"debugdata"}}],"summary":{"wastedBytes":18419.45}},"numericValue":18419.45,"numericUnit":"byte"},"screenshot-thumbnails":{"id":"screenshot-thumbnails","title":"Screenshot Thumbnails","description":"This is what the load of your site looked like.","score":null,"scoreDisplayMode":"informative","details":{"type":"filmstrip"}},"_note":"Response truncated for documentation purposes"}
Analyze — CODE SNIPPETS

curl --location --request GET 'https://pr213-testing.zylalabs.com/api/479/page+speed+analyzer+api/361/analyze?url=https://google.com/' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Page Speed Analyzer API simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

Simple Transparent Pricing

No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.

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🚀 Enterprise Plan
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Minimum annual contract: USD 10,000

Trusted by leading companies

Overview

About the API:

 

This API will run an analysis of your webpage. It will give you an insight into its speed and different key points to check.

 

What this API receives and what your API provides (input/output)?

 

Just pass your URL and the API will deliver a list of the speed performance. Also, it gives recommendations on how to improve the current speed and its SEO friendliness.

 

What are the most common uses cases of this API?

 

This API is ideal for those who want to check the different speeds of their different domains and subdomains. Be able to recognize speed problems and know how to solve them. 

Improve your page's speed, no user wants to wait too long for a page to load so, take action with this API and start recognizing what you could do better.  

 

Are there any limitations to your plans?

Besides API call limitations per month, there are no other limitations. 

Page Speed Analyzer API FAQs

The Analyze endpoint returns a comprehensive report on webpage speed performance, including metrics like bootup time, redirects, and opportunities for improvement. Each metric includes a score, description, and actionable recommendations.

Key fields in the response include "redirects," "bootup-time," and other performance metrics. Each field contains a title, description, score, and detailed insights, such as potential savings in milliseconds.

The response data is structured in a JSON format, with each performance metric represented as an object. Each object contains attributes like "id," "title," "description," and "details," allowing for easy parsing and analysis.

The Analyze endpoint provides information on various performance aspects, including page load times, JavaScript execution, and opportunities to enhance speed and SEO. It highlights specific areas needing attention.

Users can customize their requests by passing different URLs to the Analyze endpoint. Each URL will yield a tailored report based on the specific webpage's performance metrics and recommendations.

Specific data fields like "score" indicate performance levels, while "description" provides context for each metric. "details" offers deeper insights, such as potential time savings, helping users prioritize improvements.

Data accuracy is maintained through continuous updates and validation against industry standards. The API leverages established performance metrics and best practices to ensure reliable insights for users.

Typical use cases include website owners assessing page speed, developers optimizing site performance, and SEO specialists identifying areas for improvement. The API helps users enhance user experience by addressing speed issues.

General FAQs

To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.

You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.

The free trial lasts for 7 days and allows you to make up to 50 API requests.

No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.

Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.

Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.

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Additionally, if you already have an active subscription in any of these currencies (USD, EUR, CAD, AUD, GBP), that currency will remain for subsequent subscriptions. You can change the currency at any time as long as you don't have any active subscriptions.
The local currency shown on the pricing page is based on the country of your IP address and is provided for reference only. The actual prices are in USD (United States Dollar). When you make a payment, the charge will appear on your card statement in USD, even if you see the equivalent amount in your local currency on our website. This means you cannot pay directly with your local currency.
Occasionally, a bank may decline the charge due to its fraud protection settings. We suggest reaching out to your bank initially to check if they are blocking our charges. Also, you can access the Billing Portal and change the card associated to make the payment. If these does not work and you need further assistance, please contact our team at [email protected]
Prices are determined by a recurring monthly or yearly subscription, depending on the chosen plan.
API calls are deducted from your plan based on successful requests. Each plan comes with a specific number of calls that you can make per month. Only successful calls, indicated by a Status 200 response, will be counted against your total. This ensures that failed or incomplete requests do not impact your monthly quota.
Zyla API Hub works on a recurring monthly subscription system. Your billing cycle will start the day you purchase one of the paid plans, and it will renew the same day of the next month. So be aware to cancel your subscription beforehand if you want to avoid future charges.
To upgrade your current subscription plan, simply go to the pricing page of the API and select the plan you want to upgrade to. The upgrade will be instant, allowing you to immediately enjoy the features of the new plan. Please note that any remaining calls from your previous plan will not be carried over to the new plan, so be aware of this when upgrading. You will be charged the full amount of the new plan.
To check how many API calls you have left for the current month, refer to the 'X-Zyla-API-Calls-Monthly-Remaining' field in the response header. For example, if your plan allows 1,000 requests per month and you've used 100, this field in the response header will indicate 900 remaining calls.

You can monitor your API usage through the response headers included with every request:

x-zyla-api-calls-monthly-used: Shows the total number of API requests you have used during the current billing period.
x-zyla-api-calls-monthly-remaining: Shows the number of API requests you have remaining for the current billing period.

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After 7 days, you will be charged the full amount for the plan you were subscribed to during the trial. Therefore, it's important to cancel before the trial period ends. Refund requests for forgetting to cancel on time are not accepted.
When you subscribe to an API free trial, you can make up to 50 API calls. If you wish to make additional API calls beyond this limit, the API will prompt you to perform an "Start Your Paid Plan." You can find the "Start Your Paid Plan" button in your profile under Subscription -> Choose the API you are subscribed to -> Pricing tab.
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