windows app
Convert SMI to SRT
Convert SMI files to SRT subtitle files locally on Windows. No upload, no signup, no watermark.

features
what the app does
- Paste from clipboard — Ctrl+V joins the queue (e.g. a Win+Shift+S screenshot lands without saving to disk).
- Batch convert whole folders, sub-folder structure preserved.
- Auto-convert watcher — point the app at a watched folder; converted files appear in your output folder.
- Right-click .smi files in File Explorer — "Convert to SRT" opens the app pre-loaded with your selection.
- Ten UI languages, light + dark themes following the system.
- Offline by design — no telemetry, no account, no user-data exfiltration.
details
SMI to SRT on your pc
SMI to SRT Converter is a Windows utility for turning subtitle files into SRT subtitle files on your PC.
how it works
This smi to srt converter uses a Custom (SAMI) library to read your files and create SRT subtitle files locally on Windows. Nothing is sent to a server.
paste from clipboard
Press Ctrl+V to drop a copied file straight into the queue. For example, copy an .smi file in File Explorer, then paste it into the app to start converting.
batch conversion
Convert smi to srt in one run, including whole folders at once. Sub-folders are kept in the output, so the folder structure stays the same.
auto-convert watcher
Use the Auto-convert page to set a watched folder and an output folder. Keep the app in the Windows system tray, drop new files into the watched folder, and the converted subtitle files appear in the output folder.
right-click in explorer
A native shell extension adds Convert to SRT to the right-click menu for .smi files in File Explorer. The app opens with your selection already loaded.
languages & themes
The app ships in ten languages. Light and dark themes follow your Windows system theme automatically.
offline by design
No telemetry, no account, and no file uploads. Your files stay on the device from start to finish.
free & pro
The free version lets you convert SMI to SRT with no file size or file count limits. Upgrade to Pro with a one-time lifetime purchase to remove ads and unlock batch conversion. No subscriptions or recurring payments.
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