SAMI → JSON
Convert SAMI to JSON
Free online SAMI to JSON subtitle converter. Transform SAMI (.smi) files to JSON (.json) format instantly in your browser. No upload required.
Format Comparison
| SAMI | JSON | |
|---|---|---|
| Full Name | SAMI | JSON |
| Extension | .smi | .json |
| Category | xml | data |
| Key Features | Multi-language support, CSS styling, HTML-like syntax, Class-based language switching | Structured data, Multiple timing formats, API-ready, Machine-readable |
| Common Uses | Windows Media Player, Microsoft platforms, Multi-language captioning | API integration, Custom pipelines, Programmatic processing, Data interchange |
| Limitations | Windows-centric, Verbose syntax, Limited modern tool support | Not a playback format, No standard schema, Requires custom import |
How to Convert SAMI to JSON
- 1
Open the subtitle converter
Go to the Subtitle Tool and select your source SAMI file by pasting the text or uploading the .smi file.
- 2
Set your framerate
Choose the framerate that matches your video (e.g., 23.976, 25, 29.97). This ensures frame-accurate timestamp conversion.
- 3
Select JSON as output format
Choose JSON (.json) from the output format dropdown.
- 4
Download your converted file
Click the download button to save your converted JSON file. You can also copy the output text directly.
Frequently Asked Questions
How do I convert SAMI to JSON?
Upload or paste your SAMI (.smi) file into the converter, select JSON as the output format, and click Convert. The tool processes everything in your browser — no file uploads to a server.
What is the difference between SAMI and JSON?
SAMI is sami (synchronized accessible media interchange) is a microsoft-developed caption format using html-like markup. JSON is json export provides subtitle data as structured objects with all timing formats (frames, milliseconds, timecodes) — ideal for programmatic processing and api integration. They differ in features like multi-language support (SAMI) versus structured data (JSON).
Is the SAMI to JSON converter free?
Yes, completely free with no limits. The converter runs entirely in your browser using the timecodes library — no server processing, no sign-up, no watermarks.
Will I lose formatting when converting from SAMI to JSON?
JSON has some limitations: not a playback format. Timing accuracy is preserved using frame-based conversion through the timecodes library, but format-specific features like multi-language support and css styling may not carry over.