Open CSS files with File Viewer Plus
Do you need to open a CSS file?
File Viewer Plus can open CSS (Cascading Style Sheet) files, allowing you to edit the source code and save changes. The app also provides a syntax tree view to help you navigate the source code.
Open, edit, and save CSS files with our simple source code editor. Try File Viewer Plus for free today!
Free 14-day trial. 167 MB
What is a .CSS file?
CSS files are stylesheets that define how a web browser displays a webpage's content. They contain rules that control elements such as fonts, colors, spacing, borders, page layouts, and other visual aspects of a website. CSS is commonly used alongside HTML to separate a webpage’s content from its presentation, making it easier to apply consistent styling across multiple pages.
You may see CSS files when viewing the source files of a website, working on a web development project, or downloading a website template or theme. They are commonly stored with HTML, JavaScript, images, and other web assets, and web developers may edit them to change a site's appearance or layout. File Viewer Plus can open, edit, and save CSS files, allowing you to inspect or modify their stylesheet code.
About File Viewer Plus
File Viewer Plus is the universal file viewer for Windows. Why pay for dozens of software programs when you only need one? Install File Viewer Plus, and you'll be able open 400 file types with a single app.
You can also edit, save, print, and convert your files. Unknown file on your PC? No problem — the app's advanced file identification algorithm can identify over 10,000 file formats, including files with incorrect or missing file extensions. File Viewer Plus is the ultimate file viewer "plus" much more!
View all supported file types →