Tehran.ir شهرداری تهران
شهرداری تهران
tehran.ir Mobile Performance
11/100
These metrics represent real-world Chrome users experience viewing tehran.ir on mobile devices. 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 Contentful Paint
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
Metrics
Largest Contentful Paint0/100 13.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index0/100 25.1 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint1/100 10.1 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift2/100 1.02
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Time to Interactive12/100 13.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time36/100 740 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (20)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 891 KiB
4,350 ms
Eliminate render-blocking resources
Potential savings of 3,180 ms
3,180 ms
Serve images in next-gen formats
Potential savings of 312 KiB
1,470 ms
Avoid multiple page redirects
Potential savings of 1,260 ms
1,260 ms
Reduce initial server response time
Root document took 1,680 ms
1,076 ms
Efficiently encode images
Potential savings of 139 KiB
600 ms
Remove unused CSS
Potential savings of 57 KiB
450 ms
Minify JavaScript
Potential savings of 84 KiB
300 ms
Minify CSS
Potential savings of 23 KiB
150 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
Minimize main-thread work
5.7 s
Reduce JavaScript execution time
2.5 s
Avoid an excessive DOM size
1,102 elements
Avoid long main-thread tasks
12 long tasks found
Avoid chaining critical requests
20 chains found
Avoid large layout shifts
5 elements found
Keep request counts low and transfer sizes small
53 requests • 1,866 KiB
Largest Contentful Paint element
1 element found
Passed Audits (8)
Defer offscreen images
Potential savings of 27 KiB
Preconnect to required origins
Preload key requests
Properly size images
Avoids `document.write()`
Enable text compression
Avoids enormous network payloads
Total size was 1,865 KiB
Use video formats for animated content
tehran.ir Mobile SEO
90/100
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 (2)
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Tap targets are not sized appropriately
85% appropriately sized tap targets
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (11)
Document uses legible font sizes
97.32% legible text
Page has successful HTTP status code
Links have descriptive text
Page isn’t blocked from indexing
robots.txt is valid
Document avoids plugins
Document has a valid `hreflang`
Document has a `<title>` element
Document has a meta description
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
tehran.ir Mobile Best Practices
62/100
These checks highlight opportunities to improve the overall code health of tehran.ir mobile 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 (5)
Trust and Safety
Links to cross-origin destinations are unsafe
Does not use HTTPS
2 insecure requests found
Includes front-end JavaScript libraries with known security vulnerabilities
3 vulnerabilities detected
User Experience
Serves images with low resolution
General
Browser errors were logged to the console
Passed Audits (9)
Avoids requesting the geolocation permission on page load
Avoids deprecated APIs
Avoids Application Cache
Properly defines charset
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Allows users to paste into password fields
Page has the HTML doctype
Detected JavaScript libraries
tehran.ir Mobile Progressive Web App
21/100
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
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
2 insecure requests found
Does not register a service worker that controls page and `start_url`
Fast and reliable
Page load is not fast enough on mobile networks
Interactive at 13.4 s
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (4)
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
Content is sized correctly for the viewport
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
tehran.ir Mobile Accessibility
84/100
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 (6)
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.
Form elements do not have associated labels
Links do not have a discernible name
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 input fields do not have accessible names
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (22)
`[role]`s have all required `[aria-*]` attributes
`<html>` element has a `[lang]` attribute
`[id]` attributes on active, focusable elements are unique
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
ARIA IDs are unique
Buttons have an accessible name
`[role]` values are valid
`<video>` elements contain a `<track>` element with `[kind="description"]`
Document has a `<title>` element
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-hidden="true"]` is not present on the document `<body>`
No element has a `[tabindex]` value greater than 0
`[aria-*]` attributes are valid and not misspelled
`[aria-*]` attributes have valid values
`[role]`s are contained by their required parent element
Image elements have `[alt]` attributes
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` elements do not contain focusable descendents
`<html>` element has a valid value for its `[lang]` attribute
`<video>` elements contain a `<track>` element with `[kind="captions"]`
The page contains a heading, skip link, or landmark region
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Mobile Usability
100/100
These checks validate how easily a visitor can use tehran.ir on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Passed Audits (5)
Avoid plugins
Configure the viewport
Size content to viewport
Size tap targets appropriately
Use legible font sizes
Mobile Speed
76/100
These checks analyze the performance of tehran.ir on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (3)
Optimize images
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Minify HTML
Passed Audits (7)
Avoid landing page redirects
Enable compression
Leverage browser caching
Reduce server response time
Minify CSS
Minify JavaScript
Prioritize visible content
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