Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

1515sf.com

1515sf.com | Fifteen Fifteen San Francisco | Condos for Sale in the Mission

Page Load Speed

1.9 sec in total

First Response

297 ms

Resources Loaded

1.4 sec

Page Rendered

271 ms

1515sf.com screenshot

About Website

Welcome to 1515sf.com homepage info - get ready to check 1515 Sf best content right away, or after learning these important things about 1515sf.com

Fifteen Fifteen, modern condominium residences, in the heart of the Mission District in San Francisco

Visit 1515sf.com

Key Findings

We analyzed 1515sf.com page load time and found that the first response time was 297 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

1515sf.com performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value6.2 s

44/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value8.9 s

35/100

10%

Network Requests Diagram

1515sf.com

297 ms

normalize.css

115 ms

jquery.maximage.css

129 ms

jquery.fancybox.css

132 ms

jquery.jscrollpane.css

129 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 87% of them (39 requests) were addressed to the original 1515sf.com, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (575 ms) belongs to the original domain 1515sf.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 463.8 kB (34%)

Content Size

1.4 MB

After Optimization

905.7 kB

In fact, the total size of 1515sf.com main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 795.9 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 8.5 kB

  • Original 11.0 kB
  • After minification 7.5 kB
  • After compression 2.6 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 3.5 kB, which is 32% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.5 kB or 77% of the original size.

Image Optimization

-2%

Potential reduce by 12.5 kB

  • Original 795.9 kB
  • After minification 783.4 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. 1515 Sf images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 397.0 kB

  • Original 508.2 kB
  • After minification 321.6 kB
  • After compression 111.2 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 397.0 kB or 78% of the original size.

CSS Optimization

-84%

Potential reduce by 45.8 kB

  • Original 54.3 kB
  • After minification 31.8 kB
  • After compression 8.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. 1515sf.com needs all CSS files to be minified and compressed as it can save up to 45.8 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (67%)

Requests Now

43

After Optimization

14

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 1515 Sf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

1515sf.com accessibility score

66

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

1515sf.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

1515sf.com SEO score

75

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 1515sf.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that 1515sf.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph data is detected on the main page of 1515 Sf. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: