English and Spanish subtitles together, for learning while you watch
Upload a subtitle file and every line comes back with English and Spanish shown together, one above the other, on the original timing. It works in either direction: start from an English file to add Spanish, or from a Spanish file to add English. The first part is free without an account, a whole film is $5, and joining two files you already have is free up to 3,000 lines.
- Stacked layout: the language of your file on the upper line, the translation below
- Either direction: English to Spanish, or Spanish to English
- Every line translated with its neighbors, so tú and usted follow the scene
- Download as SRT for TVs and desktop players, VTT for the web, or ASS
- $5 for a film up to 10,000 lines; 150 lines or fewer free in full
Learning with two lines on screen
Dual subtitles let you read the language you are learning and glance at the one you know when a line goes past too fast. Which language sits on top depends on the file you start from. If you are learning Spanish, the most useful setup is usually a Spanish film with Spanish subtitles as the source and English added below, so the Spanish you hear matches the line you read first. If you are a Spanish speaker learning English, start from the English file and add Spanish.
Because every line is translated in blocks of up to 60 consecutive lines, the model sees the conversation around each line, which helps with gender, formality and slang. It is still machine translation: when a line puzzles you, the original is right above it.
Keeping it readable
Each language can take up to two lines, so a stacked subtitle can be four lines tall and cover part of the picture on a phone. If that bothers you, choose the split layout, which moves the first language to the top of the screen. Reading two languages also takes longer than reading one; for fast dialogue, you can slow playback a little in your player.
Already have both files?
- Choose "Join two files" and upload the English and the Spanish subtitle files
- The first file is the upper line; each line of the second file joins the line it overlaps most in time
- No AI model is used, and joining is free up to 3,000 lines
- Files from different releases may need their timing fixed first
How the tool works, what it costs and how your files are handled is on the Dual Language Subtitles page; prices for every tool are on the pricing page.
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Questions and answers
Can ChatGPT make English and Spanish dual subtitles?
For a few minutes of dialogue, yes, and the Spanish is usually good. For a whole film it tends to stop before the end, and the time codes it writes can drift, so the second language no longer matches the speech.
Which language appears on top?
The language of the file you upload. Start from a Spanish file to read Spanish first, or from an English file to read English first.
Is it Spanish from Spain or Latin America?
There is one Spanish target with no region. Edit any word on screen before downloading if you want local vocabulary.
How much is it?
Files of 150 lines or fewer are free in full. For a longer film the first part is free on screen, and the whole film, up to 10,000 lines, is $5 paid once. Joining two files is free up to 3,000 lines.
Does it work inside streaming apps?
No. It works with subtitle files you have, played in a player that loads external subtitle files. It does not add subtitles inside streaming apps.
Is my file private?
Only you can open the job, the text is not used to train AI models, and jobs created without an account are deleted after 7 days.