Feedback from the summer 2019 image optimization survey

This postConcepto de Post¿Qué es un Post?Un Post es todo aquel contenido, sea post, opinión, noticia u otro género, que un autor publica en un blog. Este puede ser de carácter corporativo o meramente ocioso; pero siempre tiene como meta arrojar información o reflejar una idea, al mismo tiempo de facilitar que los usuarios encuentren la web donde se recoge por medio de de buscadores y demás plataformas online.Generalmente, se han más lists the freeform feedback that Google Web DevRel received in its Summer 2019
image optimization techniques survey.
Responses were solicited through Web Fundamentals and
@ChromiumDev. The motivation for the survey was to find out why
most sites don’t follow image optimization best practices even though they seem like a relatively
easy way to improve performanceEn el caso de las webs, el término Performance o rendimiento, se refiere a la velocidad de carga o a la potencia de cálculo de un servidor, es decir, a la velocidad a la que se transmiten los datos del servidor al cliente. Razones para una buena performance Una web que se carga lentamente, puede animar a los clientes potenciales a abandonar la página. Para asegurar una interacción fluida, se tiene más. The response data isn’t listed here because there were flaws
in the survey methodology.

Audience

• If you’re a web developer, you might find this post useful for discovering new image optimization
  techniques, or details on how other web developers have solved a problem that you’re facing, as
  well as the costs, benefits, and limitations of each technique.
• If you’re an image service or image CDN provider, this post might help you find new market
  opportunities.
• If you’re a frameworkEl framework se refiere a una estructura básica subyacente en la ingeniería de software, que sirve al programador como estructura de desarrollo para su programación de apps. Los frameworks se usan principalmente en el desarrollo de software orientado a objetos y en enfoques de desarrollo basados en componentes. Características Un framework incluye los bloques de construcción básicos de un programa y por ende determina el diseño de la estructura básica más, build tool, or CMSConcepto de CMS¿Qué es un CMS o Sistema de Administración de Contenido?Un CMS, siglas de Content Management System, es un tipo de software que se elabora con la finalidad de ofrecer una plataforma con la que facilitar la gestión y la administración de contenidos de cualquier web. Son herramientas pensadas para que cualquier persona, sin tener conocimiento alguno de informática, pueda publicar contenidos en una página sin ningún tipo de más developer, this post might give you ideas on new
  features to implement.

WebP

• «I do like WebP but it isn’t yet fully ready. Moreover, our WordPressWordPress es el software de blogs líder en el mundo, y es concretamente fácil de utilizar y adaptable. Con WordPress, es factible crear con éxito sitios web con la ayuda de funciones ya predefinidas, sin mucho esfuerzo, y para proporcionar contenido como texto, imagen y vídeo. No se requiere conocimiento de HTML. WordPress además facilita la gestión y el mantenimiento de contenidos extensos. Al mismo tiempo de su fácil manejo, más doesn’t support WebP. One of the most popular photo editing apps, PhotoshopConcepto de Photoshop¿Qué es Photoshop?Photoshop es el nombre de una más que conocida herramienta de edición de imágenes y fotografía, un programa que se usa en ordenador para retocar fotos y hacer montajes de carácter profesional, aún cuando además alcanzable para usuarios que llevan poco tiempo experimentando en ese terreno.Con la innovación tecnológica de los últimos años, las empresas se han lanzado cada vez más a recurrir a este programa más, also doesn’t support WebP out of the box. So we can’t rely on 3rd party apps or services for image compression.»
• «Make WebP usable on Safari.»
• «I would love to use WebP if I could export them from Photoshop/Figma/Sketch and all browsers supported it.» [Note: Sketch does support WebP]
• «Next gen formatting solution would be great.»
• «Stop pushing WebP so hard when browser support is poor, and consider the need for PNG instead of JPEG for screenshots.»
• «Google Docs doesn’t support WebP.»
• «We would use WebP exclusively, but are concerned about browser compatibility.»
• «First fix browser compatibility and update legacy browsers or add legacy fixes, then people will be more inclined to adopt to new image types like WebP…»
• «Encourage pluginConcepto de Plugin¿Qué es un Plugin?Un Plugin es un fragmento o componente de código hecho para ampliar las funciones de un programa o de una herramienta. En el ámbito del marketing digital, especialmente dentro del marketing de contenidos, es algo que se utiliza con mucha frecuencia dentro de entornos como WordPress, puesto que sirven al momento de contar con añadidos que hagan mucho más cómoda y completa la experiencia de más/theme developers to consider providing support to WebP and other next-gen image types, so that non-developers don’t need to fiddle with it.»

SVG and vector images

• «If possible I’m using (animated) SVG. gatsby-image fixed a lot of this. But when you dig into what they’ve done, it’s completely unrealistic that a normal website should have to build out something like that to get images to work right. The browser should take on more of this responsibility.»
• «Would it be possible to document how to create SVG animations with lottie.js?»
• «We try to use big resolution JPEG pictures with low sizes in our website most of the time to avoid loading times. We also ensure to use SVGs when necessary to provide quality for responsive design.»
• «We try to use optimized vector graphics for all but pics if possible.»

Other image formats

• «We [need to] better educate people to stop using GIF.»

Lazy loading

• «Please keep the user in mind when considering features such as lazy load, because for many it’s annoying.»
• «Make the lazy load attribute work with background-image please.»
• «We love that lazy loading of images is finally becoming a native feature.»
• «Frameworks should do better asset processing out of the box.»
• «We have converted from lazy loading a long time ago. User reports of millions of images and sites «NOT LOADING». That was understanding our team summarized it as. It’s hard for a non-technical users to describe issues.»
• «I’m keen to get a better understanding of using Intersection Observer APIConcepto de API¿Qué es una API?Una API, siglas de Application Programming Interface o Interfaz de Programación de Apps, es un recopilatorio de código que se puede emplear para que varias apps se comuniquen entre ellas. Es algo que realiza una tarea equivalente a la interfaz de usuario al momento de promover la interacción entre persona y programa, solo que aplicado única y exclusivamente dentro del entorno del software.Aún cuando suene más for lazy loading rather than using traditional techniques.»
• «This well works for me: pwafire.org/developer/codelabs/progressive-loading.»

Background images

• «I usually load images as backgrounds in CSSConcepto de CSS¿Qué es el CSS?CSS es un lenguaje de programación que se usa para definir el estilo y el aspecto de un documento que se ha escrito mediante de un lenguaje de etiquetas, como HTML. Conocido además como hojas de estilo en cascada, es el que se emplea para dar colores, indicar tipos de letra o inclusive resaltar aspectos como el espacio entre items para dotar de estilo a más.»
• «The <img> tag is problematic and difficult to control fine-grained details about, especially with user-submitted content. We use <div> and background-image styling much more often as it allows us to use background-size, background-position, and prevent right-click saving of the image.»

Transparency

• «It’s 2019. How are JPGs still without alpha transparency?»
• «I only really use PNGs for photographs when I need a transparent background.»

Low Quality Image Placeholders (LQIPs)

• «We use LQIPS and it’s a great technique to keep visitors engaged without loading high quality images really early.»

Performance

• «We actually had a recent performance issue with images. As a user scrolls down on our site, we show the next 60 cards which include a thumbnail. Due to the 6 connection limit on the same domain, the thumbnails were being blocked as well as the next AJAXEl término técnico AJAX es un acrónimo del inglés (Asynchronous JavaScript and XML). Denota una técnica basada en la tecnología JavaScript que cambia la comunicación con el servidor y acelera las apps web. Las interfaces funcionan más rápido con transferencia de datos retardada (asíncrona). Con AJAX, las apps web pueden intercambiar datos con el servidor en segundo plano sin necesidad de recargar toda la página. El software adicional que actúa más request to get the next 60 cards if a user continues to scrollConcepto de Scroll¿Qué es el Scroll?El Scroll es una definición inglés que se usa para hablar del desplazamiento de los contenidos 2D que se muestran en la ventana de un navegador. Es ese sencillo gesto que el usuario realiza cuando desliza el dedo por la pantalla o usa la rueda del ratón para subir o bajar mientras observa los contenidos de una página.Aún cuando es un concepto que se usa más down.»
• «We would love to use HTTPEl HTTP (Hyper Text Transfer Protocol) es un protocolo que se usa para transmitir datos en redes. HTTP es un estándar técnico generalmente aceptado que establece cómo un cliente web se comunica con un servidor para que los datos solicitados por el cliente puedan ser cargados y mostrados. Información general Junto con el URL y el HTML, HTTP es uno de los conceptos más importantes de Internet (www). Fue desarrollado más/2 but most of our customers use IE11! We are therefore exploring domain sharding / loading AJAX JSON data requests off a different domain.»

Sizing

• «Sorry for intrinsicsize; leveraging height/width seems better to me.»
• «Looking for a way to generate less sizes, right now it’s ~12.»
• «Dynamic resizing of images is really hard and impossible without JS.»
• «A tool like responsivebreakpoints.com is good for web.dev :).»

High quality and high-resolution images

• «How to download compress images without losing DPI quality?»
• «We’re a document management company. Our apps handle MILLIONS of hi-res scanned images, usually TIFF or PDF.»
• «It’s a hassle. Hi-res img files are necessary for print format; must be optimized for web. It’s a hassle to downsize images for web but it’s a show-stopper if authors only supply lightweight files for images destined for print publication. We wind up giving mixed messages about requirements for submission of manuscripts with artwork. We then wind up with complex workflows for processing those materials.»

Browser capability

• «Auto responsive src crop from browser as native feature would be very useful as it is time consuming to crop all images to 4 sizes and writing all the markupEn la optimización de motores de búsqueda, el término markup (o marcado) incluye la oportunidad de añadir información adicional para los motores de búsqueda a los datos en el código fuente. Las marcas de revisión en lenguajes de marcado estandarizados se usan para estructurar el código fuente y facilitar a los motores de búsqueda la comprensión de cómo se procesan las marcas de revisión. El contenido o el código fuente más. If we can upload one large photo and writing a simple picture tag that browsers will automatically create the multiple src attributes that would be a winning feature.»
• «Personally I’m having a hard time avoiding page reflows when image with is set by CSS for responsive images (max-width: 100%; height auto or height: width: 100%; height auto), especially in combination with art direction from adaptive images/picture tag. Best way to avoid seems to use the «negative padding hack» for a fixed image ratio and then position the image inside this ratio box. Better browser support/responsive image handling would be a really great help!»
• «Please disable GIF «autoplay» by fetching just the first frame.»

CDNs and image services

• «Google should provide a free CDN like Cloudflare.»
• «Maybe more tooling to set up dynamic scaling and CDNs with different providers would be nice.»
• «A single oversized overcompressed image is a very decent solution with no extra production cost. You need around 1000 pixels wide images for mobile (500px render width) and that is also the size you need for large/desktop non-retina displays. I think images resize CDNs are a very bad solution, although I have used it in the past. The CMS should handle the resizing and of that is too complex to set up, a single solution is a good compromise (for now).»
• «CloudFlare auto-scales our images to best match the user’s display. So we can save on loading time because images are loaded in relative to the user’s display. For example, if a user is on a phone, it won’t load in a desktop-sized background.»
• «Cloudflare does this in the background without us having to do anything except check a box in our settings panel.»
• «Just to reiterate, the only reason I can successfully use srcset, etc. is due to the ease of Cloudinary. But Cloudinary gets expensive, really fast. this feels like a major hole in the development experience.»
• «We need a way to easily auto crop images in a smart way so they can work with different aspect ratios in different contexts.»
• «I also use images from Other providers like Unsplash where there is very less control of resolution, quality and compression.»

CMS, platform, and framework

• «I still struggle to find out what is the best way to use images, when I am building a site using a CMS. Authors tend to configure images with different dimensions and expect images not to shrink or scale. I am not sure if it is ok to set max-width or max-height on images»
• «Been using gatsby-image for the last few projects and have never looked back.»
• «Images are often the hard part as they are put into CMS by end user, they may use any size, format, sometimes original image in ideal image format and dimensions are not available.»
• «Images are difficult to maintain since our system is self-serve adding controls is difficult unless things happen automatically without affecting resolution. Also for us images don’t look correct in mobile vs desktop»
• «I help people to optimize their sites (WordPress). The biggest problems I’ve seen for images are: Need to depend on a CDN or plugins to create WebP. srcset/picture has to be coded properly by theme developers. Most of the lazy loading plugins loads slowly giving bad UX. Background images are hard to lazy load.»

Cost/benefit

• «The new practices are effective but increase the development time of the sites.»
• «The lack of adherence to the new standards such as srcset and WebP has been slow to be adopted by many Fortune 500 companies. Seeing this, many companies have resisted the change as an unnecessary development cost for current websites. The performance gains are not widely discussed or reported by the end user (UX). If anything, it makes it somewhat harder to save images from the web.»
• «Costly to create and manage multiple sizes, versions.»
• «They take up a lot of space on our server.»

SEO  ¿Qué es SEO o search engine optimization?   Conjunto de prácticas destinadas a mejorar el posicionamiento de una web en el ranking de resultados de los motores de búsqueda. Al contrario que la estrategia SEM, que contempla la inclusión de enlaces contratados para obtener este objetivo, el procedimiento SEO se ocupa exclusivamente de los resultados naturales (no pagados) localizados por el algoritmo propio de cada buscador. Para esto contempla ajustar más

• «It’s difficult to balance between acceptable image quality and file size. On one hand, I want fast loading for the SEO benefit, but on the other hand, poor quality images will detract from the UI/UX.»

The role of images on the web

• «There are too many on the web. Stop using useless images that don’t enhance the written content.»
• «Do you still remember the time when the web didn’t have images and we shared selfies as ASCII-art?»

Tooling, guidance, standards and best practice: frustrations and requests

• [One participant wrote a blog post in response to this survey]
• «The requirements seems to constantly change. As a web developer it is extremely frustrating because it is time consuming to save out the images in the first place. We optimize the best we can, we check the site and then months later Google has decided that the images could be even more compressed or need to be in a different format. This prevents us from providing the best possible solution to our client that lasts and instead creates a costly endeavor for them and us. Some of our small business clients simply don’t have the budget for us to keep fixing images and re-saving them out to adhere to the requirements. We don’t have the budget to do this work within their management packages. Writing the code to call different image sizes for different devices is also time consuming. It would be great to come up with a system of saving out images that would be consistent for a longer period of time.»
• «Yes, I think you got Keep Request Counts Low And File Sizes Small all wrong in Lighthouse. If a site serves over HTTP1.x then sure, but if a site serves over HTTP2 then the number of requests is less important or not even an issue if originating from the same hostnameEl hostname o nombre de equipo es un nombre único para un PC o conexión de red en una red. Los nombres de host son nombres o cadenas de caracteres específicos que hacen referencia a un host y lo hacen utilizable para la red y las personas. Pueden describir tanto direcciones físicas como conexiones de red, que disponen varios dominios bajo un mismo host. Lo mismo se aplica a la más. I have a lite website, but I load 30 small WebP files of approx 35 requests total, over HTTP2 on the same hostname. Lighthouse is flagging this as an «Keep Request Counts Low And File Sizes Small» issue whereas it is superfast and because of the HTTP2 on the same hostname the number of requests are not a problem. And yes, the files are already small (most between 1 KB and 2 KB or less). I could load a sprite but then more CSS computing needs to be done. So please update the «Keep Request Counts Low And File Sizes Small» report in Lighthouse to take HTTP2 over same hostname into account.»
• «It has been a struggle for people to remember to compress their images.»
• «Cross browser behavior remains unpredictable so the simplest solutions are often the safest.»