Will my SMI file be deleted after conversion?

No. Your original SMI file is never modified or deleted. Xonvert creates a separate ASS copy — your source file remains untouched.

What subtitle quality settings should I use?

Default settings are optimized for the best balance of quality and file size. Adjust only if you have specific requirements.

Yes. Xonvert works on any device with a modern browser — iPhone, iPad, Android phones and tablets all supported.

Since your original SMI file is never modified, there's nothing to undo. Your source file remains exactly as it was — only a new ASS copy is created.

Ensure the file isn't corrupted or DRM-protected. Try a different file to verify. If issues persist, the file may use an unsupported codec variant.

There's no daily limit for free users. Convert as many files as you need, as often as you need. PRO users get additional batch processing features.

Yes. There are no restrictions on how you use your converted files. Convert SMI to ASS for personal, educational, or commercial projects freely.

Fast, free, and secure SMI to ASS conversion. No registration required.

smi

ass

Subtitle

Fast, free, and secure SMI to ASS conversion. No registration required.

Drag & drop your file here

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Maintain maximum quality during conversion

Convert files in seconds with our optimized engine

Files automatically deleted after conversion

Click the "Select File" button to upload your smi file from your device.

Click the "Convert" button to instantly start converting to ASS.

Download your converted ass file immediately after processing.