Download VS Code extensions as VSIX

vscode-extension-offline.md

How to use?

• Copy content of vsix-bookmarklet, create a bookmark in your browser.
• Navigate to the web page of the VS Code extension you want to install.
• Click the bookmark you just created, then click the download button.
  
• After download finished, rename the file extension to *.vsix.
• In VS Code, select Install from VSIX... in the extension context menu.
  

How does it work?

http://stackoverflow.com/a/38866913/1032492

A VS Code extension's offline install package (VSIX) is available at:

https://${publisher}.gallery.vsassets.io/_apis/public/gallery/publisher/${publisher}/extension/${extension name}/${version}/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage

Take the syntax highlight extension for Vue.js as an example:

https://marketplace.visualstudio.com/items?itemName=liuji-jim.vue

• The itemName query is a composition of publisher and extension name, separated with a dot.
• The publisher is liuji-jim.
• The extension name is vue.
• The latest version number is in More Info section on the right side.
  

So the package can be downloaded via this URL:

https://liuji-jim.gallery.vsassets.io/_apis/public/gallery/publisher/liuji-jim/extension/vue/0.1.3/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage

vsix-bookmarklet

javascript:!function(){(function(){for(var%20e={version:%22%22,publisher:%22%22,identifier:%22%22,getDownloadUrl:function(){return[%22https://%22,this.identifier.split(%22.%22)[0],%22.gallery.vsassets.io/_apis/public/gallery/publisher/%22,this.identifier.split(%22.%22)[0],%22/extension/%22,this.identifier.split(%22.%22)[1],%22/%22,this.version,%22/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage%22].join(%22%22)},getFileName:function(){return[this.identifier,%22_%22,this.version,%22.vsix%22].join(%22%22)},getDownloadButton:function(){var%20e=document.createElement(%22a%22);return%20e.innerHTML=%22Download%20VSIX%22,e.href=%22javascript:void(0);%22,e.style.fontFamily=%22wf_segoe-ui,Helvetica%20Neue,Helvetica,Arial,Verdana%22,e.style.display=%22inline-block%22,e.style.padding=%222px%205px%22,e.style.background=%22darkgreen%22,e.style.color=%22white%22,e.style.fontWeight=%22bold%22,e.style.margin=%222px%205px%22,e.setAttribute(%22data-url%22,this.getDownloadUrl()),e.setAttribute(%22data-filename%22,this.getFileName()),e.onclick=function(e){e.target.onclick=null,e.target.innerHTML=%22Downloading%20VSIX...%22;var%20t=new%20XMLHttpRequest;console.log(e.target.getAttribute(%22data-url%22)),t.open(%22GET%22,e.target.getAttribute(%22data-url%22),!0),t.responseType=%22blob%22,t.onprogress=function(t){if(t.lengthComputable){var%20r=t.loaded/t.total*100;e.target.innerHTML=%22Downloading%20VSIX...%22+r.toString()+%22%25%22}},t.onload=function(t){if(200==this.status){var%20r=this.response,n=document.createElement(%22a%22);n.href=window.URL.createObjectURL(r),n.download=e.target.getAttribute(%22data-filename%22),n.click(),e.target.href=n.href,e.target.download=n.download,e.target.innerHTML=%22Download%20VSIX%22}else%20e.target.innerHTML=%22Error.%20Please%20reload%20the%20page%20amd%20try%20again.%22,alert(%22Error%20%22+this.status+%22%20error%20receiving%20the%20document.%22)},t.onerror=function(t){e.target.innerHTML=%22Error.%20Please%20reload%20the%20page%20amd%20try%20again.%22,alert(%22Error%20%22+t.target.status+%22%20occurred%20while%20receiving%20the%20document.%20%22)},t.send()},e}},t={Version:%22version%22,Publisher:%22publisher%22,%22Unique%20Identifier%22:%22identifier%22},r=document.querySelectorAll(%22.ux-table-metadata%20tr%22),n=0;n%3Cr.length;n++){var%20i=r[n],a=i.querySelectorAll(%22td%22);if(2==a.length){var%20o=a[0].innerText.replace(/^\s+|\s+$/g,%22%22),l=a[1].innerText.replace(/^\s+|\s+$/g,%22%22);t.hasOwnProperty(o)%26%26(e[t[o]]=l)}}document.querySelector(%22.vscode-moreinformation%22).parentElement.appendChild(e.getDownloadButton()).scrollIntoView(),e})()}();

@Nathrai

javascript:(function()%7Bconst%20URL_VSIX_PATTERN%20%3D%20'https%3A%2F%2Fmarketplace.visualstudio.com%2F_apis%2Fpublic%2Fgallery%2Fpublishers%2F%24%7Bpublisher%7D%2Fvsextensions%2F%24%7Bextension%7D%2F%24%7Bversion%7D%2Fvspackage'%3B%0A%0Alet%20itemName%20%3D%20new%20URL(window.location.href).searchParams.get('itemName')%3B%0Alet%20%5Bpublisher%2C%20extension%5D%20%3D%20itemName.split('.')%3B%0Alet%20version%20%3D%20document.querySelector('tbody%20tr%20.version-history-container-column').textContent%3B%0A%0Alet%20url%20%3D%20URL_VSIX_PATTERN.replace('%24%7Bpublisher%7D'%2C%20publisher)%0A%09%09%09%09%09%09%20%20.replace('%24%7Bextension%7D'%2C%20extension)%0A%09%09%09%09%09%09%20%20.replace('%24%7Bversion%7D'%2C%20version)%3B%0A%0Awindow.open(url%2C%20'_blank')%3B%7D)()%3B

Kudos to you!
F Microsoft.

@CypherpunkSamurai Appreciate it. If you look on https://open-vsx.org/extension/timonwong/shellcheck and click Download it gives you a large list of architectures. Anyhow, very tidy and snappy web ui, too. Could be its own vscodium extension, maybe. Like Chromium Web Store for ungoogled-chromium. But people are well advised to just stick with versions that work and not update like mad, to lower malware risk. Update only for known and desireable new features. Like often the case recently with Ruff linter. Thank you!

Fixed.

Checkout:
https://cypherpunksamurai.github.io/vsix-downloader-webui/

@CypherpunkSamurai Works on Chrome but not on Firefox (CORS error).

cant fix cors without a cors proxy tho :(