FrancesCoronel
commented
6 years ago Actually almost done
Closed FrancesCoronel closed 5 years ago
FrancesCoronel
commented
6 years ago Actually almost done
FrancesCoronel
commented
5 years ago Notes: You can find a list of everything that could be found in the
<head>of an HTML document.
<!doctype html> <!-- HTML5 -->The next 2 meta tags (Charset and Viewport) need to come first in the head.
<!-- Set character encoding for the document -->
<meta charset="utf-8"><!-- Viewport for responsive web design -->
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"><!-- Document Title -->
<title>Page Title less than 55 characters</title><!-- Meta Description -->
<meta name="description" content="Description of the page less than 150 characters">favicon.ico, put it at the root of your site. Normally you won't need to use any markup. However, it's still good practice to link to it using the example below. Today, PNG format is recommended over .ico format (dimensions: 32x32px).<!-- Standard favicon -->
<link rel="icon" type="image/x-icon" href="https://example.com/favicon.ico">
<!-- Recommended favicon format -->
<link rel="icon" type="image/png" href="https://example.com/favicon.png"><!-- Apple Touch Icon (at least 200x200px) -->
<link rel="apple-touch-icon" href="/custom-icon.png">
<!-- To run web application in full-screen -->
<meta name="apple-mobile-web-app-capable" content="yes">
<!-- Status Bar Style (see Supported Meta Tags below for available values) -->
<!-- Has no effect unless you have the previous meta tag -->
<meta name="apple-mobile-web-app-status-bar-style" content="black"><!-- Microsoft Tiles -->
<meta name="msapplication-config" content="browserconfig.xml" />Minimum required xml markup for the browserconfig.xml file is as follows:
<?xml version="1.0" encoding="utf-8"?>
<browserconfig>
<msapplication>
<tile>
<square70x70logo src="small.png"/>
<square150x150logo src="medium.png"/>
<wide310x150logo src="wide.png"/>
<square310x310logo src="large.png"/>
</tile>
</msapplication>
</browserconfig>rel="canonical" to avoid duplicate content.<!-- Helps prevent duplicate content issues -->
<link rel="canonical" href="http://example.com/2017/09/a-new-article-to-read.html">lang attribute of your website is specified and related to the language of the current page.<html lang="en"><html dir="rtl"><link rel="alternate" href="https://es.example.com/" hreflang="es">[x] RSS feed: ![Low][low_img] If your project is a blog or has articles, an RSS link was provided.
[ ] CSS Critical: ![Medium][medium_img] The CSS critical (or "above the fold") collects all the CSS used to render the visible portion of the page. It is embedded before your principal CSS call and between <style></style> in a single line (minified).
- 🛠 Critical by Addy Osmani on GitHub automates this.
<head>. (Except the case where sometimes JS files are loaded asynchronously on top of your page).Facebook OG and Twitter Cards are, for any website, highly recommended. The other social media tags can be considered if you target a particular presence on those and want to ensure the display.
Notes: Using
og:image:widthandog:image:heightwill specify the image dimensions to the crawler so that it can render the image immediately without having to asynchronously download and process it.
<meta property="og:type" content="website">
<meta property="og:url" content="https://example.com/page.html">
<meta property="og:title" content="Content Title">
<meta property="og:image" content="https://example.com/image.jpg">
<meta property="og:description" content="Description Here">
<meta property="og:site_name" content="Site Name">
<meta property="og:locale" content="en_US">
<!-- Next tags are optional but recommended -->
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
- 📖 A Guide to Sharing for Webmasters
- 📖 Best Practices - Sharing
- 🛠 Test your page with the Facebook OG testing
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@site_account">
<meta name="twitter:creator" content="@individual_account">
<meta name="twitter:url" content="https://example.com/page.html">
<meta name="twitter:title" content="Content Title">
<meta name="twitter:description" content="Content description less than 200 characters">
<meta name="twitter:image" content="https://example.com/image.jpg">
- 📖 Getting started with cards — Twitter Developers
- 🛠 Test your page with the Twitter card validator
[x] Error pages: ![High][high_img] Error 404 page and 5xx exist. Remember that the 5xx error pages need to have their CSS integrated (no external call on the current server).
[x] Noopener: ![Medium][medium_img] In case you are using external links with target="_blank", your link should have a rel="noopener" attribute to prevent tab nabbing. If you need to support older versions of Firefox, use rel="noopener noreferrer".
🛠 webhint
Notes: Using webfonts may cause Flash Of Unstyled Text/Flash Of Invisible Text - consider having fallback fonts and/or utilizing webfont loaders to control behavior.
[x] Webfont size: ![High][high_img] Webfont sizes don't exceed 2 MB (all variants included).
[x] Webfont loader: ![Low][low_img] Control loading behavior with a webfont loader
Notes: Take a look at CSS guidelines and Sass Guidelines followed by most Front-End developers. If you have a doubt about CSS properties, you can visit CSS Reference. There is also a short Code Guide for consistency.
- 📖 Reset.css
- 📖 Normalize.css
- 📖 Reboot
<div id="js-slider" class="my-slider">
<!-- Or -->
<div id="id-used-by-cms" class="js-slider my-slider"><style> tags or using inline CSS: only use for valid reasons (e.g. background-image for slider, critical CSS).[x] Responsive web design: ![High][high_img] All pages were tested at the following breakpoints: 320px, 768px, 1024px (can be more / different according to your analytics).
[x] CSS Validator: ![Medium][medium_img] The CSS was tested and pertinent errors were corrected.
[x] Desktop Browsers: ![High][high_img] All pages were tested on all current desktop browsers (Safari, Firefox, Chrome, Internet Explorer, EDGE...).
[x] Mobile Browsers: ![High][high_img] All pages were tested on all current mobile browsers (Native browser, Chrome, Safari...).
[x] OS: ![High][high_img] All pages were tested on all current OS (Windows, Android, iOS, Mac...).
[x] Design fidelity: ![Low][low_img] Depending the project and the quality of the creatives, you may be asked to be close to the design. You can use some tools to compare creatives with your code implementation and ensure consistency.
Notes: For a complete understanding of image optimization, check the free ebook Essential Image Optimization from Addy Osmani.
- 🛠 Imagemin
- 🛠 Use ImageOptim to optimise your images for free.
- 🛠 Use Kraken.io awesome alternative for both png and jpg optimization. Up to 1mb per files on free plan.
- 🛠 TinyPNG losslessly optimise png, apng (animated png) and jpg images. Free and paid version available.
- 🛠 ZorroSVG jpg-like compression for transparent images using svg masking.
- 🛠 SVGO a Nodejs-based tool for optimizing SVG vector graphics files.
- 🛠 SVGOMG a web-based GUI version of SVGO for optimising your svgs online.
width and height attributes on <img> if the final rendered image size is known (can be omitted for CSS sizing).<img> have an alternative text which describe the image visually..min suffix).noscript tag: ![Medium][medium_img] Use <noscript> tag in the HTML body if a script type on the page is unsupported or if scripting is currently turned off in the browser. This will be helpful in client-side rendering heavy apps such as React.js, see examples.<noscript>
You need to enable JavaScript to run this app.
</noscript>async or deferred using defer attribute.<html> tag.[ ] Minified HTML: ![Medium][medium_img] Your HTML is minified.
[ ] Lazy loading: ![Medium][medium_img] Images, scripts and CSS need to be lazy loaded to improve the response time of the current page (See details in their respective sections).
[ ] Cookie size: ![Medium][medium_img] If you are using cookies be sure each cookie doesn't exceed 4096 bytes and your domain name doesn't have more than 20 cookies.
dns-prefetch.<link rel="dns-prefetch" href="https://example.com">preconnect.<link rel="preconnect" href="https://example.com">prefetch.<link rel="prefetch" href="image.png"><body>) in advance using preload.<link rel="preload" href="app.js">Notes: You can watch the playlist A11ycasts with Rob Dodson 📹
aria-label instead.
- 📖 The robots.txt file
- 🛠 Test your robots.txt with Google Robots Testing Tool
- 📖 Introduction to Structured Data - Search - Google Developers
- 📖 RDFa - Linked Data in HTML
- 📖 JSON-LD
- 📖 Microdata
- 🛠 Test your page with the Structured Data Testing Tool
- 🛠 Complete list of vocabularies that can be used as structured data. Schema.org Full Hierarchy
rel="prev" and rel="next" to indicate paginated content.<!-- Example: Pagination link tags for page 2 of a paginated list -->
<link rel="prev" href="https://example.com/?page=1">
<link rel="next" href="https://example.com/?page=3">
Go through each of the points for checklist and verify everything works.
https://github.com/thedaviddias/Front-End-Checklist