Add your SMI file
Drop one or more .smi files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
SMI to LRC
Converting a .smi file to .lrc extracts the document's content from its office package into a portable form. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop SMI files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting SAMI captions to LRC synced lyrics
Converting a .smi file to .lrc extracts the document's content from its office package into a portable form. An .smi file is a SAMI caption document: HTML-like markup in which <SYNC Start=…> elements mark the millisecond at which a caption appears, and the caption runs until the next SYNC. Microsoft designed it as an accessibility format, so a single file can carry several languages selected by CSS class.
A .lrc file is a synchronized lyric document: each line is prefixed with a [mm:ss.xx] timestamp so a music player can highlight words in time with a song. Unlike caption formats, an .lrc line stores only a start time, with its end implied by the next timestamp. For this route the practical draw is extremely simple to write and edit by hand and widely read by music players and lyric libraries — balanced against stores only start times, so line durations must be inferred on conversion, which is worth knowing before you commit a large batch.
Why convert SMI to LRC?
The practical trigger for this conversion is usually a mismatch: with .smi, never formally standardised, so real-world files vary in structure. Switching to .lrc buys you extremely simple to write and edit by hand, which is why it is the better fit for displaying scrolling, time-synced lyrics in a music player. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
SMI vs LRC at a glance
| Aspect | SAMI captions (.smi) | LRC synced lyrics (.lrc) |
|---|---|---|
| Format type | Text-based — characters and structure, so there is no visual quality loss | Text-based — characters and structure, so there is no visual quality loss |
| How it stores data | the document has an HTML shape: <SAMI> wrapping <HEAD> with a <STYLE> block and <BODY> with the SYNC elements | each timed line begins with one or more [mm:ss.xx] tags; the fraction is usually centiseconds |
| Strongest at | captioning legacy Windows Media and Silverlight content | displaying scrolling, time-synced lyrics in a music player |
| Weak spot | never formally standardised, so real-world files vary in structure | stores only start times, so line durations must be inferred on conversion |
Pick LRC as the output
Select .lrc in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if LRC is selectable, the route is real and validated.
Convert on your device
Press Convert. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid LRC file. Outputs keep the original filename with the .lrc extension.
SMI to LRC questions, answered
Will converting SMI to LRC lose quality?
There is no visual quality to lose — smi is text-oriented and lrc is text-oriented, so the question is structural fidelity. Text, ordering, and basic structure are preserved; complex layout, embedded objects, and styling beyond the target's model are simplified.
Is it private to convert SMI files here?
Yes — the .smi file is processed inside your browser tab and never uploaded. The package is unzipped in memory and its XML content parsed locally; nothing is uploaded. Close the tab and the file is gone from memory.
Where will the LRC file work?
Music players and lyric apps across desktop and mobile read .lrc for synchronized lyrics, and many lyric databases distribute it. Video subtitle players generally do not, so converting to .srt or .vtt is needed for caption playback.
Will the LRC file be bigger or smaller than my SMI?
It depends on the content: each timed line begins with one or more [mm:ss.xx] tags; the fraction is usually centiseconds. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my SMI file?
In .smi, style-class and title information describes presentation and language selection, not the cues; conversion keeps timing and text. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.
Can I convert LRC back to SMI?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .smi → .lrc → .smi is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.