Subtitle Statistics
Analyze any subtitle file for cue count, reading speed (CPS), duration, longest lines, language, and more.
Drag & drop your subtitle file here
Drag and drop subtitle files here or click to browse
What Statistics Are Computed
Engineered for video editors and localization teams. Helps enforce common subtitle timing rules and formatting.
Subtitle Statistics Live Execution Demo
In-Memory Processing
File parsing, mutations, and time shifts for standard tools run in browser memory without sending subtitle files to our servers.
Millisecond Precision
Millisecond-accurate timecode parsing and arithmetic prevent synchronization drift across desktop and web players.
Fault-Tolerant Engine
Automatic multi-encoding detection and syntax sanitization gracefully handle malformed cues and unexpected linebreaks.
Who Needs Subtitle Statistics?
Real-world scenarios across video post-production, course transcription, and global localization.
Broadcast QC
Check that subtitle CPS and cue counts meet delivery specifications before submission.
Localization Teams
Estimate translation effort based on character and word counts across subtitle files.
Fansub Groups
Track subtitle metrics like CPS and overlaps to maintain quality across releases.
Content Creators
Verify that auto-generated captions have reasonable reading speed before publishing.
Educators
Check subtitle readability metrics for online course videos.
Accessibility Audits
Document CPS and timing metrics for WCAG and readability compliance.
How It Works
Streamlined end-to-end processing pipeline engineered for speed and precision.
Upload your subtitle file
SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, and SMI are supported.
Format Analysis
The statistics engine parses every cue and computes timing and text metrics.
Review the summary
cue count, CPS, duration, language, and more.
Processing
Use the stats to decide if subtitles need cleaning, fixing, or re-timing.
Why Choose AllSubConverter?
Client-Side Privacy
Standard tools run in your browser so standard files are not uploaded to our servers.
Fast Local Parsing
Optimized processing engine parses and converts files directly in your browser.
Generous Batches
Up to 50 MB per file, 200 files or 1 GB total per batch.
Universal Compatibility
Runs in modern browsers across Windows, macOS, Linux, iOS, and Android.
More Subtitle Tools
Frequently Asked Questions
CPS (characters per second) measures reading speed. Subtitles with very high CPS are too fast to read comfortably. Common guidelines recommend staying under 15-20 CPS. The statistics tool reports both average and maximum CPS.
No. All analysis happens entirely in your browser. Your subtitle files never leave your device.
The tool analyzes the ratio of CJK characters (Chinese hanzi, Japanese kana, Korean hangul) to Latin characters to estimate the dominant language. This is a heuristic and may not be perfect for mixed-language files.
For CJK (Chinese, Japanese, Korean) text, each character is counted as a word since there are no spaces. For Latin scripts, words are split by whitespace. The tool detects the dominant script automatically.
Input: SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI.
The statistics are displayed in the workspace. You can use the QA Report tool for an exportable full report that includes these metrics.
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