Subtitle Preview
Fast. Private. Perfect.
Load any subtitle file and see it play in real-time. Optionally add a video to watch subtitles in context. Navigate, scrub, and verify timing visually.
Drag & drop your subtitle file here
or click to browse
SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI, TXT
How It Works
Select your subtitle file to load and parse it.
Optionally upload a video file to see subtitles in context.
Use the play button or seek bar to navigate through the timeline.
Click any cue in the list to jump directly to that subtitle.
Watch the subtitle overlay at the bottom of the player as it plays.
Verify that timing, text, and formatting look correct.
Why Choose AllSubConverter?
Your Privacy Matters
Everything runs in your browser. Your files are never uploaded.
Lightning Fast
Optimized processing engine converts files in seconds.
Truly Unlimited
No file size limits. No daily limits. Completely free.
Works Everywhere
Works on Windows, Mac, Linux, iOS, Android - any modern browser.
Key Features
Common Use Cases
Timing Verification
After syncing or converting subtitles, verify that cue timing looks correct before saving.
Quality Check
Watch subtitles with your video to catch typos, missing lines, or formatting issues.
Preview Before Export
After editing or styling subtitles, preview the result before exporting the final file.
Translation Review
After translating subtitles, watch them with the video to check if translations fit timing.
Format Testing
Load a subtitle file in an unfamiliar format to see its content rendered clearly.
Presentation Prep
Verify that subtitles display correctly before a screening, stream, or upload.
Frequently Asked Questions
No. You can use the preview tool with just a subtitle file. The timeline will show the total duration and you can scrub through cues. Adding a video enhances the experience but is optional.
The preview renders ASS text content with basic formatting. Complex ASS visual effects (animations, gradients, drawings) are simplified to readable text. For full ASS rendering, use a dedicated player like VLC or mpv.
Absolutely. This is one of the primary use cases. Load your subtitle file, optionally add the video, and play through to verify that cues appear and disappear at the right moments.
Yes. The cue list on the right shows all subtitle entries. Click any cue to seek the player to that timestamp. The list also auto-scrolls to highlight the currently active cue during playback.
Any format supported by your browser's HTML5 video player. This typically includes MP4, WebM, and Ogg. The video file is loaded locally in your browser and never uploaded.
Input: SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI. Video: MP4, WebM, Ogg (browser-dependent).
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