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Tools for tag "Performance"

  1. Screenshot of

    Convert images to AVIF.

    Added Feb 2021
    Go to
  2. Screenshot of AVPress


    Optimise videos in your browser.

    Added Jun 2021
    Go to AVPress
  3. Screenshot of Bundlephobia


    Find the cost of adding a npm package to your bundle

    Added Feb 2020

    Made by

    • GitHub profile image of pastelsky
    Go to Bundlephobia
  4. Screenshot of

    Compress images.

    Added Jun 2021
    Go to
  5. Screenshot of Cumulative Layout Shift Debugger

    Cumulative Layout Shift Debugger

    Visualize the cumulative layout shifts of any webpage to identify improvements.

    Added Apr 2021

    Made by

    • GitHub profile image of fili
    Go to Cumulative Layout Shift Debugger
  6. Screenshot of Dither it!

    Dither it!

    Dither images for style and performance

    Added Feb 2020

    Made by

    • GitHub profile image of alexharris
    Go to Dither it!
  7. Screenshot of ESBench


    Create shareable JavaScript benchmarks

    Added Apr 2020
    Go to ESBench
  8. Screenshot of EStimator


    Find out how much data you could save with modern JavaScript

    Added Dec 2020
    Go to EStimator
  9. Screenshot of Font Squirrel Webfont Generator

    Font Squirrel Webfont Generator

    Modify, improve, trim, change and export your fonts in modern formats

    Added Jan 2020
    Go to Font Squirrel Webfont Generator
  10. Screenshot of gif2avif


    Convert GIFs to next-generation AVIF files

    Added Jan 2021
    Go to gif2avif
  11. Screenshot of HTML Size Analyzer

    HTML Size Analyzer

    Analyze HTML size and catch bloat like inline images or code duplication.

    Added Sep 2022
    Go to HTML Size Analyzer
  12. Screenshot of HTTP/3 Check

    HTTP/3 Check

    Check if a URL supports HTTP/3.

    Added May 2021
    Go to HTTP/3 Check
  13. Screenshot of Is my host fast yet?

    Is my host fast yet?

    Analyze real-world server response latencies, as experienced by real-world users navigating the web.

    Added Jul 2020
    Go to Is my host fast yet?
  14. Screenshot of

    Optimize your jpegs

    Added Jan 2021

    Made by

    • GitHub profile image of neslinesli93
    Go to
  15. Screenshot of Lighthouse CI Diff

    Lighthouse CI Diff

    Compare two Lighthouse reports

    Added Jan 2021
    Go to Lighthouse CI Diff
  16. Screenshot of Lighthouse Metrics

    Lighthouse Metrics

    Run lighthouse from multiple locations

    Added May 2020
    Go to Lighthouse Metrics
  17. Screenshot of Lighthouse Scoring Calculator

    Lighthouse Scoring Calculator

    Calculate your Lighthouse performance score across versions

    Added Apr 2020

    Made by

    • GitHub profile image of paulirish
    Go to Lighthouse Scoring Calculator
  18. Screenshot of MConverter


    Convert images to and from JXL (JPEG XL), AVIF, WebP and more

    Added Oct 2021
    Go to MConverter
  19. Screenshot of PageSpeed Compare

    PageSpeed Compare

    Compare performance metrics of your pages against each other or your competitors using Google PageSpeed Insights.

    Added Mar 2021

    Made by

    • GitHub profile image of sanderheilbron
    Go to PageSpeed Compare
  20. Screenshot of Responsive Breakpoints

    Responsive Breakpoints

    Create responsive breakpoints for your images and get the adequate HTML them

    Added Jan 2020
    Go to Responsive Breakpoints
  21. Screenshot of

    Demonstate and observe slow-loading resources.

    Added Jul 2021

    Made by

    • GitHub profile image of csswizardry
    • GitHub profile image of ryantownsend
    Go to
  22. Screenshot of SpeedVitals


    SpeedVitals measures Website Performance and helps optimize Core Web Vitals

    Added Aug 2021

    Made by

    • GitHub profile image of kashishkumawat
    Go to SpeedVitals
  23. Screenshot of Squoosh


    Make images smaller using best-in-class codecs, right in the browser

    Added Dec 2019

    Made by

    • GitHub profile image of jakearchibald
    • GitHub profile image of surma
    • GitHub profile image of developit
    • GitHub profile image of PaulKinlan
    Go to Squoosh
  24. Screenshot of

    Analyse your website's waterfall to make it faster.

    Added Jun 2021
    Go to
  25. Screenshot of Worth It

    Worth It

    Determine how much less JavaScript is downloaded using module/nomodule

    Added Mar 2020

    Made by

    • GitHub profile image of developit
    Go to Worth It
  26. Screenshot of Yellow Lab

    Yellow Lab

    Test and analyse your website.

    Added Aug 2021
    Go to Yellow Lab