INSTALL GOOGLE BOOK ER SCRIPT
Results 1 - 24 Google Books Downloader. Most powerful and stable way to download Google Book. Now install Greasemonkey Script and then install Google. GBookDown - Download Google Books. Saves all available Preview pages from a Google Book as PNGs. Install this script? Advertisement. Google book er. Saves all available Preview pages from a Google Book as PNGs. Install this script? Ask a question, post a review, or report the script.
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Saves all available Preview pages from a Google Book as PNGs Use it with Firefox and Greasemonkey, other browsers have some issues. Userscripts are little. How to install Google's book userscript downloader in firefox to download ebook from google resourceone.info the add-on greasemonkey installed on. After installing Google Books Downloader go to option “file” and select option “ add book” Greasemonkey and Google Book downloader script.
But you can also provide other sizes. Chrome uses the icon closest to 48dp, for example, 96px on a 2x device or px for a 3x device. Open up the Manifest pane on the Application panel.
If you've added the manifest information correctly, you'll be able to see it parsed and displayed in a human-friendly format on this pane. High-quality, unique descriptions can make your results more relevant to search users and can increase your search traffic. Theming the browser's address bar to match your brand's colors provides a more immersive user experience. Provide a basic offline experience There is an expectation from users that installed apps will always have a baseline experience if they're offline.
That's why it's critical for installable web apps to never show Chrome's offline dinosaur. The offline experience can range from a simple, offline page, to a read-only experience with previously cached data, all the way to a fully functional offline experience that automatically syncs when the network connection is restored.
In this section, we're going to add a simple offline page to our weather app. If the user tries to load the app while offline, it'll show our custom page, instead of the typical offline page that the browser shows. By the end of this section, our weather app will pass the following audits: Current page does not respond with a when offline. In the next section, we'll replace our custom offline page with a full offline experience.
Once you've completed this code lab, be sure to check out the Debugging Service Workers code lab for a more in-depth look at how to work with service workers.
Features provided via service workers should be considered a progressive enhancement, and added only if supported by the browser. For example, with service workers you can cache the app shell and data for your app, so that it's available even when the network isn't. When service workers aren't supported, the offline code isn't called, and the user gets a basic experience. Using feature detection to provide progressive enhancement has little overhead and it won't break in older browsers that don't support that feature.
GBookDown - Download Google Books
Register the service worker The first step is to register the service worker. Add the following code to your index.
This is the easiest way to set the scope of your service worker. The scope of the service worker determines which files the service worker controls, in other words, from which path the service worker will intercept requests.
The default scope is the location of the service worker file, and extends to all directories below. So if service-worker.
Precache offline page First, we need to tell the service worker what to cache. In your service-worker. Our install event now opens the cache with caches.
Providing a cache name allows us to version files, or separate data from the cached resources so that we can easily update one but not affect the other. Once the cache is open, we can then call cache. Note that cache. That means you're guaranteed that, if the install step succeeds, you cache will be in a consistent state. But, if it fails for some reason, it will automatically try again the next time the service worker starts up.
DevTools Detour Let's take a look at how you can use DevTools to understand and debug service workers. It should look like this: When you see a blank page like this, it means that the currently open page does not have any registered service workers. Now, reload your page. The Service Workers pane should now look like this: When you see information like this, it means the page has a service worker running. Next to the Status label, there's a number in this case , keep an eye on that number as you're working with service workers.
It's an easy way to tell if your service worker has been updated. Clean-up old offline pages We'll use the activate event to clean up any old data in our cache. This code ensures that your service worker updates its cache whenever any of the app shell files change. The updated service worker takes control immediately because our install event finishes with self.
Without those, the old service worker would continue to control the page as long as there is a tab open to the page. Handle failed network requests And finally, we need to handle fetch events. We're going to use a network, falling back to cache strategy. The service worker will first try to fetch the resource from the network, if that fails, it will return the offline page from the cache. But, if the request. If it fails, the catch handler opens the cache with caches.
The result is then passed back to the browser using evt. Key Point: Wrapping the fetch call in evt. If you don't call evt.
Google books er script
DevTools Detour Let's check to make sure everything works as we expect it. With the Service Workers pane open, refresh the page, you'll see the new service worker installed, and the status number increment.
We can also check to see what's been cached. Right click Cache Storage, pick Refresh Caches, expand the section and you should see the name of your static cache listed on the left-hand side. Clicking on the cache name shows all of the files that are cached. Now, let's test out offline mode. After checking it, you should see a little yellow warning icon next to the Network panel tab.
This indicates that you're offline. Reload your page and We get our offline panda, instead of Chrome's offline dino! Tips for testing service workers Debugging service workers can be a challenge, and when it involves caching, things can become even more of a nightmare if the cache isn't updated when you expect it.
Between the typical service worker lifecycle and a bug in your code, you may become quickly frustrated. But don't. Use DevTools In the Service Workers pane of the Application panel, there are a few checkboxes that will make your life much easier.
Offline - When checked simulates an offline experience and prevents any requests from going to the network. Update on reload - When checked will get the latest service worker, install it, and immediately activate it.
Bypass for network - When checked requests bypass the service worker and are sent directly to the network. Start Fresh In some cases, you may find yourself loading cached data or that things aren't updated as you expect. To clear all saved data localStorage, indexedDB data, cached files and remove any service workers, use the Clear storage pane in the Application tab.
Alternatively, you can also work in an Incognito window. Additional tips: Once a service worker has been unregistered, it may remain listed until its containing browser window is closed. If multiple windows to your app are open, a new service worker will not take effect until all windows have been reloaded and updated to the latest service worker. Unregistering a service worker does not clear the cache!
If a service worker exists and a new service worker is registered, the new service worker won't take control until the page is reloaded, unless you take immediate control. Verify changes with Lighthouse Run Lighthouse again and verify your changes.
Don't forget to uncheck the Offline checkbox before you verify your changes! Provide a full offline experience Take a moment and put your phone into airplane mode, and try running some of your favorite apps. In almost all cases, they provide a fairly robust offline experience. Users expect that robust experience from their apps. And the web should be no different. Progressive Web Apps should be designed with offline as a core scenario.
Key Point: Designing for offline-first can drastically improve the performance of your web app by reducing the number of network requests made by your app, instead resources can be precached and served directly from the local cache.
Even with the fastest network connection, serving from the local cache will be faster! Service worker life cycle The life cycle of the service worker is the most complicated part.
If you don't know what it's trying to do and what the benefits are, it can feel like it's fighting you. But once you know how it works, you can deliver seamless, unobtrusive updates to users, mixing the best of the web and native patterns.
Key Point: This codelab only covers the very basics of the service worker life cycle. It's triggered as soon as the worker executes, and it's only called once per service worker.
If you alter your service worker script the browser considers it a different service worker, and it'll get its own install event. Typically the install event is used to cache everything you need for your app to run. The main purpose of the activate event is to configure the service worker's behavior, clean up any resources left behind from previous runs e. It can go to the network to get the resource, it can pull it from its own cache, generate a custom response or any number of different options.
Check out the Offline Cookbook for different strategies that you can use. Updating a service worker The browser checks to see if there is a new version of your service worker on each page load. If it finds a new version, the new version is downloaded and installed in the background, but it is not activated.
It's sits in a waiting state, until there are no longer any pages open that use the old service worker. Once all windows using the old service worker are closed, the new service worker is activated and can take control. Refer to the Updating the service worker section of the Service Worker Lifecycle doc for further details.
Choosing the right caching strategy Choosing the right caching strategy depends on the type of resource you're trying to cache and how you might need it later. For our weather app, we'll split the resources we need to cache into two categories: resources we want to precache and the data that we'll cache at runtime. Caching static resources Precaching your resources is a similar concept to what happens when a user installs a desktop or mobile app. The key resources needed for the app to run are installed, or cached on the device so that they can be loaded later whether there's a network connection or not.
For our app, we'll precache all of our static resources when our service worker is installed so that everything we need to run our app is stored on the user's device. To ensure our app loads lightning fast, we'll use the cache-first strategy; instead of going to the network to get the resources, they're pulled from the local cache; only if it's not available there will we try to get it from the network.
Pulling from the local cache eliminates any network variability. No matter what kind of network the user is on WiFi, 5G, 3G, or even 2G , the key resources we need to run are available almost immediately. Caution: In this sample, static resources are served using a cache-first strategy, which results in a copy of any cached content being returned without consulting the network.
While a cache-first strategy is easy to implement, it can cause challenges in the future. Caching the app data The stale-while-revalidate strategy is ideal certain types of data and works well for our app. It gets data on screen as quickly as possible, then updates that once the network has returned the latest data.
Stale-while-revalidate means we need to kick off two asynchronous requests, one to the cache and one to the network. Under normal circumstances, the cached data will be returned almost immediately providing the app with recent data it can use.
Then, when the network request returns, the app will be updated using the latest data from the network. Are you connected with multiple Google accounts in your web browser?
If so please disconnect from your other Google accounts and try again. Else simply start a new merge from the YAMM menu to re-authorize. But this " Authorization is required to perform that action " error message is translated by Google based on the user language. So if you want to correctly handle this error, you'll have to check for this message in US English but also in other languages even in UK English, the error message is different, with Authori s ation instead of Authori z ation.
Here are various translations of the message we have collected so far not necessarily the whole sentence:. If the add-on has been correctly authorized, you won't get the previous message.
Instead, the add-on can fail at any time depending on access rights depending if the account has access to the ressources your script is trying to access, like a spreadsheet.
Best is to warn the user as fast as possible eg: Indeed, only google. Then we can resend to server side this email address with a google. If not, we can display an error message to the user:. Here's an example of a function we can use to check if the current user is impacted by the issue and warn him accordingly:. We hope this issue will be fixed soon, but as it has been ongoing since last November, best would be if add-ons are updated to correctly handle it. Search this site.
Contents 1 Issue summary 2 Additional details 3 Recommended workarounds 3. Authorization is required to perform that action 3. Add-on authorized by both accounts.The poet delights in disorder only. The two got into it in silence. Instead, the add-on can fail at any time depending on access rights depending if the account has access to the ressources your script is trying to access, like a spreadsheet.
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It removes many of the sharp edges and dark corners you may run into. The Service Workers pane should now look like this: When you see information like this, it means the page has a service worker running.
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