USF File — Open & Convert .usf Online
What Is a .usf File?
USF (.usf) is a subtitle file format. Universal Subtitle Format Created by Various, this format is essential for professionals.
How to Open .usf Files
Upload your .usf file to OpenAnyFile and instantly open and inspect it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About USF Files
Popular USF Conversions
Frequently Asked Questions
What is a .usf file?
A .usf file is a subtitle format called USF. Universal Subtitle Format
How do I open a .usf file without installing software?
Upload your .usf file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .usf files?
.usf files are typically created by Various.
Can I convert .usf to another format?
Yes. OpenAnyFile converts .usf to SRT, ASS.
Is it safe to open .usf files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .usf on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.