How to open .HTC files on Android

To open .HTC files on Android, android typically won’t “run” an HTC; open it with a text-editor app to view it, or transfer it to a desktop editor for easier inspection.

Step-by-step instructions

  1. Android typically won’t “run” an HTC; open it with a text-editor app to view it, or transfer it to a desktop editor for easier inspection.

Common issues

The file opens as gibberish or in the wrong app

HTC is usually plain text (markup + script). If it opens in an image viewer or another inappropriate program, your system is using the wrong file association or encoding.

  1. Use “Open with” and select a text/code editor so the file is treated as text.
  2. If characters look corrupted, try an editor that lets you change encoding and re-open as UTF-8 or the expected legacy encoding used by the project.

The HTC behavior doesn’t work in a browser

HTC is a legacy Internet Explorer behavior technology; many modern browsers don’t support it.

  1. Verify whether the environment is expected to support IE behaviors; HTC is primarily associated with Internet Explorer-era behavior features.
  2. If this is a legacy web app, consider updating/replacing the behavior with modern web technologies rather than relying on HTC.

Server/content-type problems when hosting an .HTC file

HTC files are commonly associated with the MIME type text/x-component; incorrect server configuration can cause the component not to load as intended.

  1. Check the server is sending an appropriate content type for .htc (commonly text/x-component).
  2. Confirm the URL is reachable and not blocked by security headers or policy in the target environment.

You expected a “document” file, but it contains code

Many people mistake .HTC for a generic document. In most cases it’s a web development component file that can contain script.

  1. Open it in a text/code editor and search for PUBLIC:COMPONENT and script blocks to confirm it’s an HTML Component.
  2. If you received it unexpectedly, verify with the sender what it is used for and where it belongs in the project.

Security note

.HTC files can contain executable script (for example, IE behavior scripts). Treat them like code: review contents before using them in a web page or legacy IE environment.

Back to .HTC extension page