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The SRT subtitle analyzer gives you a detailed overview of a subtitle file directly in your browser. Paste SRT content or open a local file to inspect cue count, timeline duration, subtitle screen time, gaps, overlaps, words, characters, cue durations and reading-speed data.
Paste subtitle content or select a local .srt file. The analyzer reads cue timing and text, builds a file-level summary and displays every parsed cue in a detailed inspection table.
Select an SRT file from your device to place its contents into the analyzer.
These values help flag cues that may deserve a closer look.
File overview plus individual cue inspection.
Inspect timing relationships and text measurements for each parsed subtitle cue.
| # | Start → End | Duration | Gap | Text | Chars | Words | CPS | WPS | Status | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| Select “Analyze SRT” to inspect the subtitle data. | ||||||||||
An SRT file is made from a sequence of subtitle cues. Each cue normally contains an index, a start time, an end time and one or more lines of text. Looking at the raw file tells you what the subtitles say, but it can be difficult to see the timing patterns of an entire file at a glance.
The analyzer converts SRT timecodes into milliseconds and measures the relationship between the text and its position on the timeline. It then combines individual cue data into a file-level overview while keeping every cue available in the detailed table.
Measures cue duration, gaps between consecutive cues and overlapping time ranges.
Counts visible characters and words after removing common formatting tags.
Calculates characters per second and words per second for cues with valid positive durations.
Measures periods between one subtitle ending and the next subtitle beginning.
Identifies malformed timing, non-positive durations, empty text and overlapping cues.
Combines cue measurements into totals and averages for a faster overview of the complete subtitle file.
If your project also includes recorded dialogue, narration or other spoken material, the Audio Content Recording Services section covers additional audio workflows. For more interactive utilities, explore Audio Tools for Recording, Mixing, and Ear Training.
The cue count shows how many subtitle entries were recognized. The timeline span measures the period from the beginning of the earliest valid cue to the end of the latest valid cue, while subtitle screen time adds together the durations of valid cues.
These measurements answer different questions. A 20-minute timeline does not mean subtitles are visible for 20 minutes. There may be dialogue-free sections, visual passages or other periods without subtitle cues.
Word and character totals describe the amount of text contained in the file. Average cue duration gives another perspective on how the text has been divided across the timeline.
If you are planning spoken material before it reaches the subtitle stage, How Long Does Vocal Recording Actually Take? discusses recording duration, while the Musician Psychology and Recording Confidence guide looks at preparation and performance from another angle.
Timing analysis begins with the start and end values of each cue. The difference between those two timecodes is the cue duration. The analyzer also compares neighboring cues to calculate the space between them.
end time − start time next start − current end A positive gap means there is time between two subtitle cues. A zero value means the cues touch exactly. A negative relationship means their time ranges overlap. An overlap is not automatically an editing mistake, but it is useful to identify it so the surrounding sequence can be checked.
If a cue ends at or before its start time, the analyzer treats its duration as invalid rather than using that value in normal duration and reading-rate averages.
Creators working across audio and picture can also use the Interactive Online Audio Mixer to explore audio balance, or the Mixer Console Simulator to experiment with a console-style workflow.
Timing alone does not describe what viewers actually need to read. For every valid cue, the analyzer also measures the amount of visible subtitle text. Common markup is removed before the text count so formatting tags do not inflate the displayed character total.
Characters per second and words per second relate text quantity to display duration:
visible characters ÷ cue duration words ÷ cue duration These values make it easier to locate text-heavy cues, but they should be interpreted in context. Language, vocabulary, audience, editing rhythm and delivery requirements can all affect how a subtitle sequence should be presented.
The adjustable CPS value in the analyzer is therefore a review reference rather than a fixed universal rule. The same principle applies to minimum cue duration and the short-gap threshold.
For creators preparing voice material, the Voice, Vocal and Speech Recording page covers spoken-performance production, while Commercial Audio Recording explores advertising, presentation and promotional material.
The analyzer can work from pasted subtitle text or a local SRT file. Selecting a file reads its text with the browser's File API and places the content into the same editor used for pasted subtitles.
This makes it practical to inspect a file, adjust the analysis settings and immediately run the calculations again. There is no need to manually convert the timecodes into seconds or build a separate spreadsheet of cue durations.
The detailed table keeps the original timing beside each measurement. If a statistic looks unusual, you can see which subtitle produced it and compare that cue with the surrounding sequence.
Projects that combine subtitles with voiceover may also benefit from the Voiceover Recording Studio resource. For multilingual media work, see Russian Voice Over for American Companies and Media Projects.
Start with the file overview instead of reading every cue individually. The totals reveal the general shape of the subtitle file and show whether the analyzer detected timing issues or cues that crossed your selected review values.
Paste SRT text or choose a local .srt file.
Check totals, timeline span, screen time and text volume.
Review overlaps, invalid timing, short cues and dense text.
Run the revised SRT through the tool after making changes.
If the same production also includes music or other recorded material, explore Mixing and Mastering or the broader Audio Recording, Mixing & Mastering Services overview.
SRT files are often revised more than once. Dialogue can change, edits can move, text can be shortened, and cue boundaries can be adjusted. A fresh analysis after those changes can reveal timing relationships that are easy to miss while editing line by line.
The report is also useful when receiving an SRT file from another stage of a project. Instead of beginning with a manual cue-by-cue inspection, you can first see how many entries are present, how the timeline is distributed and whether obvious timing anomalies appear.
Artists planning larger media or recording projects can explore recording information for international artists. Those traveling for a session may also find the New York recording travel guide or North Jersey recording travel guide useful.
It reports parsed cue count, timeline span, combined subtitle screen time, gaps, overlaps, text totals, average cue duration and reading-rate measurements. It also provides a cue-by-cue table.
Yes. Select a local .srt file and the browser reads its text into the analyzer automatically. You can still edit the loaded text before running another analysis.
An overlap occurs when one cue begins before the preceding cue has ended. The analyzer marks this relationship in the detailed results.
In this tool, subtitle screen time is the sum of the positive durations of valid cues. Because overlapping cues can occupy some of the same timeline interval, this sum is not necessarily the same as unique subtitle-covered timeline time.
Yes. Each valid non-empty cue receives a characters per second value and a words per second value. These measurements are included as part of the broader SRT report.
No server-side analysis is required by this implementation. A selected file is read with the browser's File API and processed by the page's JavaScript.
For projects centered on songs and musical performance, see Song Recording and Demo Production. You can also explore Blues and Country Recording for a more genre-specific production example.
Load your subtitles, review the file overview and use the cue table to find timing and text measurements that deserve a closer look.
Go beyond individual audio tools. Arrange multiple tracks, edit clips, build modular effect chains, add modulation, mix through a Master bus, save projects and export the finished mix to WAV.
Explore 168 free browser-based tools for musicians, singers, producers, engineers and creators. Open a category to find your next tool.
I build Ronter Sound Lab and the audio tools on this website as free resources for musicians, producers and creators. If these tools are useful to you and you would like to support the project, any voluntary contribution helps me continue developing the free online DAW, create new tools, improve existing features and keep everything available to everyone.
Every contribution, large or small, is sincerely appreciated. Thank you for supporting independent development.