Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

fileformat.info

FileFormat.Info: The Digital Rosetta Stone

Page Load Speed

26.5 sec in total

First Response

491 ms

Resources Loaded

8.7 sec

Page Rendered

17.3 sec

fileformat.info screenshot

About Website

Click here to check amazing File Format content for United States. Otherwise, check out these important facts you probably never knew about fileformat.info

FileFormat.Info is the source for file format standards, online file conversions, and detailed file specifications, including Unicode characters, MIME types and file extensions

Visit fileformat.info

Key Findings

We analyzed Fileformat.info page load time and found that the first response time was 491 ms and then it took 26 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

fileformat.info performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

51/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

79/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value220 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.2 s

86/100

10%

Network Requests Diagram

www.fileformat.info

491 ms

css

38 ms

bootstrap.css

506 ms

font-awesome.css

211 ms

override.css

424 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 53% of them (10 requests) were addressed to the original Fileformat.info, 21% (4 requests) were made to Fonts.gstatic.com and 5% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Fileformat.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 452.5 kB (70%)

Content Size

648.3 kB

After Optimization

195.8 kB

In fact, the total size of Fileformat.info main page is 648.3 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Javascripts take 367.0 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 40.4 kB

  • Original 60.7 kB
  • After minification 59.7 kB
  • After compression 20.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 40.4 kB or 67% of the original size.

Image Optimization

-16%

Potential reduce by 690 B

  • Original 4.3 kB
  • After minification 3.6 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. Obviously, File Format needs image optimization as it can save up to 690 B or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 225.0 kB

  • Original 367.0 kB
  • After minification 367.0 kB
  • After compression 142.0 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 225.0 kB or 61% of the original size.

CSS Optimization

-86%

Potential reduce by 186.4 kB

  • Original 216.3 kB
  • After minification 186.2 kB
  • After compression 29.9 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. Fileformat.info needs all CSS files to be minified and compressed as it can save up to 186.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (46%)

Requests Now

13

After Optimization

7

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of File Format. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

fileformat.info accessibility score

80

Accessibility Issues

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

Buttons do not have an accessible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Best Practices

fileformat.info best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

fileformat.info SEO score

86

Search Engine Optimization Advices

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 uses 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 Fileformat.info 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 Fileformat.info 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 description is not detected on the main page of File Format. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: