Tehran.ir شهرداری تهران
شهرداری تهران
tehran.ir Desktop Performance
43/100
These metrics represent real-world Chrome users experience viewing tehran.ir web page. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
First Input Delay
First Contentful Paint
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Speed Index0/100 9.3 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift2/100 1.057
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
First Contentful Paint17/100 2.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint21/100 3.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive73/100 3.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time96/100 110 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (19)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 1,227 KiB
960 ms
Eliminate render-blocking resources
Potential savings of 930 ms
930 ms
Remove unused JavaScript
Potential savings of 915 KiB
720 ms
Efficiently encode images
Potential savings of 806 KiB
680 ms
Reduce initial server response time
Root document took 1,270 ms
669 ms
Properly size images
Potential savings of 696 KiB
600 ms
Avoid multiple page redirects
Potential savings of 380 ms
380 ms
Remove unused CSS
Potential savings of 57 KiB
120 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Does not use passive listeners to improve scrolling performance
Ensure text remains visible during webfont load
Serve static assets with an efficient cache policy
32 resources found
Avoid an excessive DOM size
1,136 elements
Avoid enormous network payloads
Total size was 3,090 KiB
Minimizes main-thread work
1.8 s
Keep request counts low and transfer sizes small
54 requests • 3,090 KiB
Largest Contentful Paint element
1 element found
Avoid chaining critical requests
20 chains found
Avoid long main-thread tasks
6 long tasks found
Avoid large layout shifts
5 elements found
Passed Audits (9)
Preload key requests
Defer offscreen images
Potential savings of 3 KiB
Minify JavaScript
Potential savings of 84 KiB
Minify CSS
Potential savings of 23 KiB
Avoids `document.write()`
JavaScript execution time
0.5 s
Enable text compression
Preconnect to required origins
Use video formats for animated content
tehran.ir Desktop SEO
91/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (1)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (10)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document avoids plugins
Page isn’t blocked from indexing
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Links have descriptive text
Document has a meta description
Page has successful HTTP status code
Document has a `<title>` element
tehran.ir Desktop Best Practices
69/100
These checks highlight opportunities to improve the overall code health of tehran.ir page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (4)
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
3 vulnerabilities detected
Links to cross-origin destinations are unsafe
Does not use HTTPS
2 insecure requests found
General
Browser errors were logged to the console
Passed Audits (10)
Avoids requesting the geolocation permission on page load
Detected JavaScript libraries
Avoids deprecated APIs
Displays images with correct aspect ratio
Allows users to paste into password fields
Avoids requesting the notification permission on page load
Serves images with appropriate resolution
Properly defines charset
Page has the HTML doctype
Avoids Application Cache
tehran.ir Desktop Progressive Web App
19/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (10)
PWA Optimized
Is not configured for a custom splash screen
Does not provide a valid `apple-touch-icon`
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 13.7 s
Installable
Does not register a service worker that controls page and `start_url`
Does not use HTTPS
2 insecure requests found
Web app manifest does not meet the installability requirements
Passed Audits (3)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
tehran.ir Desktop Accessibility
71/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (9)
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Links do not have a discernible name
Form elements do not have associated labels
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
`[aria-hidden="true"]` elements contain focusable descendents
ARIA input fields do not have accessible names
`[aria-*]` attributes do not match their roles
Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (19)
The page contains a heading, skip link, or landmark region
`<video>` elements contain a `<track>` element with `[kind="description"]`
`[aria-*]` attributes have valid values
`[id]` attributes on active, focusable elements are unique
`<html>` element has a valid value for its `[lang]` attribute
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Image elements have `[alt]` attributes
`[role]` values are valid
`<html>` element has a `[lang]` attribute
`[role]`s have all required `[aria-*]` attributes
Buttons have an accessible name
`[role]`s are contained by their required parent element
No element has a `[tabindex]` value greater than 0
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
ARIA IDs are unique
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-*]` attributes are valid and not misspelled
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Document has a `<title>` element
Desktop Speed
75/100
These checks analyze the performance of tehran.ir on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (4)
Optimize images
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Minify HTML
Minify JavaScript
Passed Audits (6)
Avoid landing page redirects
Enable compression
Leverage browser caching
Reduce server response time
Minify CSS
Prioritize visible content
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