After adding an image to my collection/single type the preview image Strapi shows is not displaying see here.
I inspected the img src and the src address is correct and the url correctly takes me to where the image is stored see here.
Does anyone know why / how to get the preview image working??
I am using the following:
strapi - v4.1.3
strapi-provider-upload-azure-storage - v2.0.0
node - v16.8.0
Azure storage and CDN
I fixed this issue by adding the following to my ./config/middlewares.js file:
module.exports = [
'strapi::errors',
'strapi::cors',
'strapi::poweredBy',
'strapi::logger',
'strapi::query',
'strapi::body',
'strapi::session',
'strapi::favicon',
'strapi::public',
{
name: 'strapi::security',
config: {
contentSecurityPolicy: {
directives: {
'connect-src': ["'self'", 'https:'],
'img-src': ["'self'", 'data:', 'blob:', `${AZURE_CDN_URL}`],
'media-src': ["'self'", 'data:', 'blob:', `${AZURE_CDN_URL}`],
upgradeInsecureRequests: null,
},
},
},
},
];
I have also encountered this issue when using other cloud provider, eg. Cloudinary. I found that this is a security middleware issues, anyone facing this issue on other providers can go to https://github.com/strapi/strapi/tree/master/packages/providers
Inside each provider guide, there's a section of:
Security Middleware Configuration
Due to the default settings in the Strapi Security Middleware you will need to modify the contentSecurityPolicy settings to properly see thumbnail previews in the Media Library. You should replace strapi::security string with the object bellow instead as explained in the middleware configuration documentation.
I fixing that error by using this settings:
module.exports = ({ env }) => [
"strapi::errors",
{
name: "strapi::security",
config: {
contentSecurityPolicy: {
directives: {
'connect-src': ['self', 'http:', env("SUPABASE_URL")],
'img-src': ['self', 'data:', 'blob:', , env("SUPABASE_URL"), 'https://dl.airtable.com'],
},
},
},
},
"strapi::cors",
"strapi::poweredBy",
"strapi::logger",
"strapi::query",
"strapi::body",
"strapi::session",
"strapi::favicon",
"strapi::public",
];
into middleware.js
After restarting thumbnail preview start working properly.
I use Strapi with Nuxt and i18n to produce a static site in English and Danish.
The site should be able to produce URLs like these:
mysite.com/
mysite.com/da
mysite.com/news/a-story
mysite.com/da/nyheder/en-historie
mysite.com/cases/a-case
mysite.com/da/case/en-case
I have a pages folder structure like this
_cases
_slug.vue <-- for case pages
_news
_slug.vue <-- for news pages
_slug.vue <-- for other pages
index.vue <-- for my frontpage
I use the following code to list links for nice URLs that renders just fine
h2 case
router-link(:to="localePath({ name: 'cases-slug', params: { cases: $t('slugs.cases'), slug: aCasePage.slug }})") {{aCasePage.title}}
h2 news
router-link(:to="localePath({ name: 'news-slug', params: { news: $t('slugs.news'), slug: aNewsPage.slug }})") {{aNewsPage.title}}
The problem is, that no matter if I click and go to a news page or a case page, I get served the same _cases -> _slug.vue component.
Looking into the .nuxt/router.js file, the routes seems to be generated correct:
routes: [{
path: "/da",
component: _1ea75fec,
name: "index___da"
}, {
path: "/da/:slug",
component: _2214a27c,
name: "slug___da"
}, {
path: "/da/:cases/:slug?",
component: _3a25cd77,
name: "cases-slug___da"
}, {
path: "/da/:news/:slug?",
component: _3988eeb6,
name: "news-slug___da"
}, {
path: "/",
component: _1ea75fec,
name: "index___en"
}, {
path: "/:slug",
component: _2214a27c,
name: "slug___en"
}, {
path: "/:cases/:slug?",
component: _3a25cd77,
name: "cases-slug___en"
}, {
path: "/:news/:slug?",
component: _3988eeb6,
name: "news-slug___en"
}],
How can I avoid Nuxt mixing up these routes? and the page Vue-components matched to them?
can you share you solution for the _slug pages data fetching ?
I am using findOne (slug,_locale:i18n.locale) from strapi .it's not working
so still hold on this issue
I'm building a large application using Nuxt and Vuetify, everything is good and working fine but unfortunately the score from Lighthouse is not the best with only 42 in performance.
I already improved a few things like:
Better fonts loading from google;
Moving async code from nuxtServerInit to the layout;
Removing unnecessary third party services;
It went from 42 to 54 but I'm still not very happy about the result.
Unfortunately I'm not the best doing these improvements because I lack of knowledge.
I see the TTFB is not optimal at all but I don't really know what can I improve... So I hope you can help me to boost my application with hints and suggestions.
Here I will paste my nuxt.congig.js so that you're aware of what I'm using and how:
const path = require('path')
const colors = require('vuetify/es5/util/colors').default
const bodyParser = require('body-parser')
const maxAge = 60 * 60 * 24 * 365 // one year
const prefix = process.env.NODE_ENV === 'production' ? 'example.' : 'exampledev.'
const description =
'description...'
let domain
if (
process.env.NODE_ENV === 'production' &&
process.env.ENV_SLOT === 'staging'
) {
domain = 'example.azurewebsites.net'
} else if (
process.env.NODE_ENV === 'production' &&
process.env.ENV_SLOT !== 'staging'
) {
domain = 'example.com'
} else {
domain = ''
}
module.exports = {
mode: 'universal',
/**
* Disabled telemetry
*/
telemetry: false,
/*
** Server options
*/
server: {
port: process.env.PORT || 3030
},
serverMiddleware: [
bodyParser.json({ limit: '25mb' }),
'~/proxy',
'~/servermiddlewares/www.js'
],
router: {
middleware: 'maintenance'
},
env: {
baseUrl:
process.env.NODE_ENV === 'production'
? 'https://example.com'
: 'https://localhost:3030',
apiBaseUrl:
process.env.API_BASE_URL || 'https://example.azurewebsites.net'
},
/*
** Headers of the page
*/
head: {
title: 'example',
meta: [
{ charset: 'utf-8' },
{ name: 'viewport', content: 'width=device-width, initial-scale=1' },
{
hid: 'description',
name: 'description',
content: description
},
{
hid: 'fb:app_id',
property: 'fb:app_id',
content: process.env.FACEBOOK_APP_ID || 'example'
},
{
hid: 'fb:type',
property: 'fb:type',
content: 'website'
},
{
hid: 'og:site_name',
property: 'og:site_name',
content: 'example'
},
{
hid: 'og:url',
property: 'og:url',
content: 'https://example.com'
},
{
hid: 'og:title',
property: 'og:title',
content: 'example'
},
{
hid: 'og:description',
property: 'og:description',
content: description
},
{
hid: 'og:image',
property: 'og:image',
content: 'https://example.com/images/ogimage.jpg'
},
{
hid: 'robots',
name: 'robots',
content: 'index, follow'
},
{
name: 'msapplication-TileColor',
content: '#ffffff'
},
{
name: 'theme-color',
content: '#ffffff'
}
],
link: [
{
rel: 'apple-touch-icon',
sizes: '180x180',
href: '/apple-touch-icon.png?v=GvbAg4xwqL'
},
{
rel: 'icon',
type: 'image/png',
sizes: '32x32',
href: '/favicon-32x32.png?v=GvbAg4xwqL'
},
{
rel: 'icon',
type: 'image/png',
sizes: '16x16',
href: '/favicon-16x16.png?v=GvbAg4xwqL'
},
{ rel: 'manifest', href: '/site.webmanifest?v=GvbAg4xwqL' },
{
rel: 'mask-icon',
href: '/safari-pinned-tab.svg?v=GvbAg4xwqL',
color: '#777777'
},
{ rel: 'shortcut icon', href: '/favicon.ico?v=GvbAg4xwqL' },
{
rel: 'stylesheet',
href:
'https://fonts.googleapis.com/css?family=Abril+Fatface|Raleway:300,400,700&display=swap'
}
]
},
/*
** Customize the page loading
*/
loading: '~/components/loading.vue',
/*
** Global CSS
*/
css: ['~/assets/style/app.scss', 'swiper/dist/css/swiper.css'],
/*
** Plugins to load before mounting the App
*/
plugins: [
'#/plugins/axios',
'#/plugins/vue-swal',
'#/plugins/example',
{ src: '#/plugins/vue-infinite-scroll', ssr: false },
{ src: '#/plugins/croppa', ssr: false },
{ src: '#/plugins/vue-debounce', ssr: false },
{ src: '#/plugins/vue-awesome-swiper', ssr: false },
{ src: '#/plugins/vue-html2canvas', ssr: false },
{ src: '#/plugins/vue-goodshare', ssr: false }
],
/*
** Nuxt.js modules
*/
modules: [
'#/modules/static',
'#/modules/crawler',
'#nuxtjs/axios',
'#nuxtjs/auth',
'#nuxtjs/device',
'#nuxtjs/prismic',
'#dansmaculotte/nuxt-security',
'#nuxtjs/sitemap',
[
'#nuxtjs/google-analytics',
{
id: 'example',
debug: {
sendHitTask: process.env.NODE_ENV === 'production'
}
}
],
['cookie-universal-nuxt', { parseJSON: false }],
'nuxt-clipboard2'
],
/*
** Security configuration
*/
security: {
dev: process.env.NODE_ENV !== 'production',
hsts: {
maxAge: 15552000,
includeSubDomains: true,
preload: true
},
csp: {
directives: {
// removed contents
}
},
referrer: 'same-origin',
additionalHeaders: true
},
/*
** Prismic configuration
*/
prismic: {
endpoint: 'https://example.cdn.prismic.io/api/v2',
preview: false,
linkResolver: '#/plugins/link-resolver',
htmlSerializer: '#/plugins/html-serializer'
},
/*
** Auth module configuration
*/
auth: {
resetOnError: true,
localStorage: false,
cookie: {
prefix,
options: {
maxAge,
secure: true,
domain
}
},
redirect: {
callback: '/callback',
home: false
},
strategies: {
local: {
endpoints: {
login: {
url: '/auth/local',
method: 'POST',
propertyName: 'token'
},
logout: { url: '/auth/logout', method: 'POST' },
user: { url: '/me', method: 'GET', propertyName: false }
},
tokenRequired: true,
tokenType: 'Bearer'
},
google: {
client_id:
process.env.GOOGLE_CLIENT_ID ||
'example'
},
facebook: {
client_id: process.env.FACEBOOK_APP_ID || 'example',
userinfo_endpoint:
'https://graph.facebook.com/v2.12/me?fields=about,name,picture{url},email',
scope: ['public_profile', 'email']
}
}
},
/*
** Vuetify Module initialization
*/
buildModules: [
['#nuxtjs/pwa', { meta: false, oneSignal: false }],
'#nuxtjs/vuetify'
],
/*
** Vuetify configuration
*/
vuetify: {
customVariables: ['~/assets/style/variables.scss'],
treeShake: true,
rtl: false,
defaultAssets: {
font: false,
icons: 'fa'
}
},
/*
** Vue Loader configuration
*/
chainWebpack: config => {
config.plugin('VuetifyLoaderPlugin').tap(() => [
{
progressiveImages: true
}
])
},
/*
** Build configuration
*/
build: {
analyze: true,
optimizeCSS: true,
/*
** You can extend webpack config here
*/
extend(config, ctx) {
config.resolve.alias.vue = 'vue/dist/vue.common'
// Run ESLint on save
if (ctx.isDev && ctx.isClient) {
config.devtool = 'cheap-module-source-map'
config.module.rules.push({
enforce: 'pre',
test: /\.(js|vue)$/,
loader: 'eslint-loader',
exclude: /(node_modules)/,
options: {
fix: true
}
})
}
if (ctx.isServer) {
config.resolve.alias['~'] = path.resolve(__dirname)
config.resolve.alias['#'] = path.resolve(__dirname)
}
}
}
}
A few maybe useful information:
I use only scoped style for each page and component and the amount of custom style is really poor since I'm using almost everything from Vuetify as it is;
When I do "view page source" from my browser, I don't like to see a very long CSS inside the page, not minimised...
I don't load anything using fetch or asyncData, I prefer to load data once component is mounted;
Evrything is deployed on Azure and I consume a .Net core API.
What would be nice to know are the best practices with some examples to improve the performances, in particular the TTFB.
In Lighthouse I see "Remove unused JavaScript" with a list of /_nuxt/.. files... But I don't think these files are unused and so I would like to know why they are flagged like so...
Maybe Azure should clean the project on each deploy? I don't know...
I use the az Azure Cli and I deploy just by doing git push azure master, so nothing special.
"Reduce initial server response time"... How? The plan where production app is running is the faster in Azure, what should I improve and how?
"Minimize main-thread work": What does it mean?
"Reduce JavaScript execution time": How?
I hope you can help me to understand and boost everything.
I will keep this post updated with your requests, maybe you wish to see something more about the project. Thanks
I've recently had to go through this process with a rather large Nuxt application, so I can share some of the insights and solutions we came up with. We managed to bump ours up by about 40 points before we were happy.
My number one piece of advice for anyone reading: Ditch the frameworks. By design, they are bloated to handle as many common use cases as possible and make application as easy as possible, at the expense of size. In the realm of browsers, where size and speed are everything, each new framework (Nuxt, Vue, Vuetify) adds another layer of abstraction that negatively impacts size and speed.
Anyways, with that out of the way, here's some other pieces of advice for those that cannot ditch the frameworks.
Lighthouse can often be misleading
We found that the "Remove unused Javascript" warnings were basically impossible to fix with Vue. The problem is that Lighthouse is only able to inspect the code that is actually run during the test, and has no idea that code for error handling or onclick handling in the Vue runtime is necessary, until of course it is.
Unfortunately, it's not possible to know ahead of time what code in the runtime is going to be necessary, so it all needs to be sent. However, as the developer, you at least have control over what 3rd party libraries, modules, and plugins are needed during the initial load of the application. It's up to you to ensure only the necessary pieces are sent and used.
So in Lighthouses eyes, there's lots of useless, unused code. However, the second the application needs to do anything, it's no longer useless. Hence why it is somewhat misleading.
Always keep this in mind, because there's a lot of "problems" that these tools will report that are just a fact of how Javascript applications work. To me, it seems that the developers of these frameworks still have a few more hurdles to overcome in making Javascript apps truly accessible and performant in the eyes of Google.
Keep your Plugins and modules short.
Each plugin you add to your application in the nuxt.config.js increases the size of the main JS bundle included in each page. This inevitably leads to lots of unused code, huge JS file sizes, and of course, longer load times.
It's perfectly valid to instead add plugins to only the pages they're needed on:
// inside the SocialSharing.vue component
import Vue from 'vue'
import VueGoodshare from 'vue-goodshare'
Vue.use(VueGoodshare)
export default { ... }
A reminder though: The page this import happens will still have all the code from vue-goodshare added. It's much better to instead only include the components from these libraries that you actually need.
A good way to check this is running your build with the analyze property set to true. (It may be helpful for you to share your analysis here)
Reduce Initial Server Response Time
If you're already running the best server, there's still a few things you can do to help speed things up.
Leverage caching for your pages, so that there's no need to render them server side. However, some of these tests (like Lighthouse) specifically disable caching, leading to poor results.
Reduce the amount of work required to render pages. Ensure there's no blocking API calls happening, keep pages simple and small, and ensure that the server is not overloaded.
Utilize edge caching, or edge deployments, so that your application is closer to your users. For example, if your application is deployed in USWEST, and Lighthouse is being tested in Dubai, you're likely going to see a lot of latency in that request, which will drive up the server response time.
You may need to follow this up with the specific server you're running, and where it's located to get more help. However, the points I outlined would almost certainly get your TFFB to a green score.
Minimize Main Thread Work
In browsers, the main thread is where all the action happens. It is solely responsible for handling user interactions, updating the page, and in essence, turning a document of HTML into a living application. A main thread that is too busy can lead to performance problems, especially noticeable by users when they're trying to interact with your page.
Often, when seeing this, it's because you're running too much Javascript. Specifically, you're running too much Javascript all at once, which ends up blocking up the main thread. Javascript-heavy applications are notorious for this, and it can be a really challenging problem to solve.
The single biggest helper for our app was delaying the loading of unimportant scripts. For example, we run Rollbar, and Google Analytics on all our pages. Instead of loading the scripts at app-start, we instead just load their small command queues, and delay the load time of the big scripts by ~5s. This frees up the main thread to focus on more important things, like rehydrating the Vue application.
You'll also find significant savings by just reducing the amount of JS there is to process. Each line of code returned to the client is another line that has to be sent, parsed, and executed. I would definitely take a look at your modules and plugins first to see if there's some low hanging fruit.
Reduce Javascript Execution Time
This is another unfortunate metric being used, which in our test often just means "the app is still doing something". I say it's unfortunate because in our experience it did not impact the performance or user experience in the application.
We frequently saw our third party services, like Intercom, Rollbar, GA, etc, extending their execution times well past 10s, and with third party code, there's nothing you can do besides not use it.
My advice: Focus on optimizing the application using everything else I've highlighted. This is something that can be incredibly difficult to specifically fix, and is usually just a symptom of other things, such as the main thread being too busy, third part code being slow.
One Last Piece Of Advice
If all else fails, you may be able to "trick" some of the tests in your favour. We did this by delaying the load of our GA and Rollbar scripts until after the test has completed. Remember, this tool is looking at certain metrics in a certain timeframe, and scoring you based on that. You may be able to leverage simple alternate techniques, like lazy loading below the fold, to see a noticeable difference in performance.
Anyways, this is quite a complicated task, and by no means is there a "3 step guide to success" here. You'll find plenty of guides online claiming they've brought their Vue app from 30 to 100 with a few simple changes, but they all ignore the fact that real apps have a lot of code and do a lot of things, and balancing that with speed and performance is an art form.
You may want to take a look at resources such as the shell application model, or service workers.
If you need any clarification on this post, feel free to ask away. But keep in mind, the question you're asking is broad, and doesn't just have a single "right" way of approaching. It's ultimately up to you to take the important bits here and apply them as you can.
Update with examples
Most of what I've talked about has been quite hard to show examples for, as I've covered topics that are either overly simplistic and don't need an explanation, or are vague concepts to begin with. However, one method we used that had some good results can be shown.
Here's an example of a modified script we use to load Intercom:
var APP_ID = "your_app_id_here";
window.intercomSettings = {
app_id: APP_ID,
hide_default_launcher: !0,
session_duration: 36e5
},
function() {
var n,
e,
t = window,
o = t.Intercom;
"function" == typeof o ? (o("reattach_activator"), o("update", t.intercomSettings)) : (n = document, (e = function() {
e.c(arguments)
}).q = [], e.c = function(t) {
e.q.push(t)
}, t.Intercom = e, o = function() {
// Don't load the full Intercom script until after 10s
setTimeout(function() {
var t = n.createElement("script");
t.type = "text/javascript",
t.crossorigin = "anonymous",
t.async = !0,
t.src = "https://widget.intercom.io/widget/" + APP_ID;
var e = n.getElementsByTagName("script")[0];
e.parentNode.insertBefore(t, e)
}, 1e4)
}, "complete" === document.readyState ? o() : t.attachEvent ? t.attachEvent("onload", o) : t.addEventListener("load", o, !1))
This is a custom version of the script they give you to place in your apps <head></head> tag. However, you'll notice we've added a setTimeout function that will delay the loading of the full Intercom script. This gives your application a chance to load everything else without competing for network or CPU time.
However, as Intercom is no longer guaranteed to be available, you'll need to use greater caution when interacting with it.
This exact same concept can be applied to just about every 3rd party script you might load in. We also use it with Google Analytics, where we initialize the command queue, but defer loading the actual script. Obviously, this can cause tracking issues with short sessions, but that is the tradeoff you need to make if performance is your primary goal.
Quick question:
While the browser identifies my application as a valid PWA, as well as shows the install popup on the mobile browser. When it is audited in lighthouse, it shows Does not respond with a 200 when offline. I have validated that my app shell is cached from application(screenshots attached).
Details and Background:
I have built PWA on laravel using js and jquery. For asset compiling, I am using laravel mix and for PWA framework, I am using workbox. Also just to be clear I am not using any SPA framework/library .
In short I have built a custom spa using simpler components.
For PWA part this I am using workbox along with laravel mix.
Here are my service worker, manifest.json and mix file. note that I use sw.js and generate prod-sw.js using laravel-mix. This prod-sw.js is used in production
webpack.mix.js
require('laravel-mix-versionhash');
const mix = require('laravel-mix');
const workboxPlugin = require('workbox-webpack-plugin');
mix.webpackConfig({
output: {
filename: '[name].[contenthash].js',
publicPath: ''
},
plugins: [
new workboxPlugin.InjectManifest({
swSrc: 'sw.js', // more control over the caching
swDest: 'prod-sw.js', // the service-worker file name
importsDirectory: 'service-worker', // have a dedicated folder for sw files
exclude: [/\.map$/, /mix-manifest\.json$/, /mix\..*\.js$/, /manifest\.json$/, /service-worker\.js$/, /OneSignalSDKWorker\.js$/],
include: [/template\..*\.html$/, /\.js$/, /app\..*\.css$/, /logo.png$/],
templatedUrls: {
'/pwa': 'version-' + process.env.MIX_APP_VERSION,
},
})
],
})
mix.sass('resources/assets/sass/homepage.scss', 'public/css/')
.sass('resources/assets/sass/amp.scss', 'public/css/')
.sass('resources/assets/sass/app.scss','public/css/');
if (mix.inProduction()){
mix.versionHash();
}else{
mix.sourceMaps();
}
sw.js
var version = 123;
workbox.core.setLogLevel(workbox.core.LOG_LEVELS.silent);
workbox.skipWaiting();
workbox.clientsClaim();
const precacheController = new workbox.precaching.PrecacheController();
// Cache all scripts and stylesheets using an extension whitelist
workbox.routing.registerRoute(new RegExp('.(?:css|html|ico)$'),
workbox.strategies.staleWhileRevalidate({
cacheName: 'static-resources',
/* plugins: [
new workbox.expiration.Plugin({
maxEntries: 35,
maxAgeSeconds:1*24*60*60,
}),
], */
})
);
workbox.routing.registerRoute(new RegExp('.*(?:pwa\.|vendors\.).*\.js$'),
workbox.strategies.cacheFirst({
cacheName: 'js-cache-' + version,
plugins: [
new workbox.expiration.Plugin({
maxAgeSeconds: 8*24*60*60,
}),
],
})
);
workbox.routing.registerRoute('/pwa',
workbox.strategies.cacheFirst({
cacheName: 'html-cache-' + version,
})
);
workbox.precaching.precacheAndRoute(self.__precacheManifest);
manifest.json
{
"short_name": "Example",
"name": "Example",
"description": "Example App Description",
"gcm_sender_id": "1234567890",
"start_url" : "/pwa",
"display": "standalone",
"orientation": "portrait",
"theme_color": "#FFFFFF",
"background_color": "#FFFFFF",
"icons": [
{
"src": "https://cdn.example.com/assets/icons/icon-48x48.png",
"sizes": "48x48",
"type": "image/png"
}
]
}
A snapshot of manifest file, cache storage and lighthouse report is attached for your reference. Manifest.json, Cache Storage and Lighthouse
I have the same issue but without providing templateUrl property.
It works offline for me just in devTools but not fully offline and lighthouse has given the same results as yours.