Rendering PostScript using GhostScript in WebAssembly.

Latest Version

Version
0.31
Update
April 25, 2023
Size
12.29MiB
Developer
Category
Users
5,000+
Rating
4.375 ★
Manifest Version
3
Web Store Status
Languages Support
English (United States)
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Permissions
DeclarativeNetRequestWithHostAccess
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PostScript Viewer Extension

This is a wrapper for GhostScript 9.26 compiled in WebAssembly and allows direct display of PostScript files (.ps, .ps.gz, application/postscript) within Google Chrome.

April 2023: version 0.31:
- bug fix.
version 0.3:
- now compatible with manifest v3;
- fixed a bug that prevented certain scripts from being rendered.
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Source Manifest.json

{ "background": { "service_worker": "background.js" }, "content_security_policy": { "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'" }, "description": "Rendering PostScript using GhostScript in WebAssembly.", "host_permissions": [ "" ], "icons": { "128": "logo.png" }, "manifest_version": 3, "name": "PostScript Viewer", "permissions": [ "declarativeNetRequestWithHostAccess" ], "short_name": "ps-wasm", "update_url": "https://clients2.google.com/service/update2/crx", "version": "0.31", "web_accessible_resources": [ { "resources": [ "viewer.html" ], "matches": [ "" ] } ]}
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How to download and manually install PostScript Viewer extension for Chrome

Looking for a way to install PostScript Viewer extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install PostScript Viewer extensions manually, this article outlines two simple methods to effortlessly install PostScript Viewer extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download PostScript Viewer extension and manually install through Drag &Drop

If you ever need to manually install a PostScript Viewer extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the PostScript Viewer Extension by clicking the "Download CRX" button on the website.

Look for the PostScript Viewer extension you wish to install. Go to the website and download the PostScript Viewer extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for PostScript Viewer extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the PostScript Viewer extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download PostScript Viewer extension for Chrome and install in Developer Mode

This is another method to install PostScript Viewer extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the PostScript Viewer extension file

Select and download the PostScript Viewer extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the PostScript Viewer extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your PostScript Viewer extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the PostScript Viewer extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install PostScript Viewer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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毕环宇 (ID: 000000c393fc9802) Voted 1 ★ - Updated 06/28/2022 完全不知道怎么用。

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_ _ (‪disk0‬) (ID: 000000a3ec1108db) Voted 4 ★ - Updated 04/27/2021 Great extension, ignore below PS, to dev: Do you have a public repo for this? Would like to try and fix an issue with the extension handling urls that only appear to be postscript files (e.g. just had to disable the extension to view a github repository page: https://github.com/idavis/prototype.ps)

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Xulei Liu (ID: 0000002c8202c71d) Voted 5 ★ - Updated 04/27/2021 Can't be nicer!

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Just Li (ID: 0000002816753c1d) Voted 5 ★ - Updated 06/23/2020 通过为该扩展程序授予文件URL的访问权限(在Chrome的“管理扩展程序”中),人们可以使用它来查看Chromebook上的.ps文件。(从Chrome浏览器中,按Ctrl-O并选择一个PostScript(.ps)文件将打开此扩展程序的标签,最终将其直接呈现为PDF文件的呈现方式。)真正方便。

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Shreevatsa R (ID: 000000dbef5995c8) Voted 5 ★ - Updated 02/02/2020 By giving this extension access to file URLs (in Chrome's "Manage Extensions"), one can use it to view .ps files on a Chromebook. (From Chrome, hitting Ctrl-O and choosing a PostScript (.ps) file will open it this extension's tab, which will eventually render it directly the way PDF files are rendered.) Really convenient.