Extract text from HTML5 cache manifests (APPCACHE)
To convert APPCACHE cache manifests to another format, you need Visual Studio Code or other Web software.
To convert other file formats to the "Cache Manifest File" file type, you need software like Visual Studio Code or a similar tool.
The .appcache file format is a plain text document used by older web applications to dictate which files a browser should save for offline viewing. This relies on the deprecated HTML5 Application Cache API. These files are typically edited using code editors like Visual Studio Code or Notepad++.
The .appcache format is heavily flawed and completely obsolete. It was notorious among developers for aggressive caching bugs that trapped users on outdated versions of websites. Consequently, major browsers like Google Chrome and Apple Safari have entirely removed support for it. Users need to extract data from these files primarily to migrate their caching logic to modern web standards.
The best conversion targets for an .appcache file are standard text formats like TXT or CSV to audit the URL lists, or migrating the logic directly into a JS (Service Worker) script. Because it is a deprecated system file, typical online converters fail to process it properly. We can inspect the internal text content to help you safely extract the resource URLs.
Convert.Guru analyzes your APPCACHE file, detects the exact format, and lets you read the text inside.
If you want to convert APPCACHE file to HTML, HTM, CSS, JS, PHP, ASP, ASPX, JSP, JSPX, PY, RB or PL, you can use Visual Studio Code or similar software from the "Offline Web App Caching" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to APPCACHE, try Visual Studio Code or another comparable tool in the "Offline Web App Caching" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our APPCACHE converter.