Chrome extension · Requires a captioned Netflix title

Use two Netflix subtitle tracks at once.

Keep the language you are learning on top and a familiar translation underneath, without replacing the rest of the Netflix player.

Available subtitle languages vary by title, profile, and region.

Set up Netflix

Choose tracks the title actually provides.

Install Dubstack

Chrome will ask for Netflix and Netflix subtitle-file access because the extension runs inside the player.

Open a title and play it

Dubstack detects the timed-text tracks Netflix makes available for that title.

Choose Learning and Translation

Open Dubstack, pick the two tracks, and keep Auto mode on unless you want a per-video override.

Use the subtitle line

Click a word, drag across a phrase, or press Alt-R to replay the current line.

A Netflix-style conversation scene with Spanish and English subtitle lines
Solo queria asegurarmeI just wanted to make sure

Built for the awkward cases

The normal captions remain the fallback.

Streaming subtitle tracks are not always predictable. Dubstack waits for its own cues before hiding Netflix captions.

A chosen track is missing

Dubstack clears its overlay and restores Netflix captions instead of echoing one native line twice.

The episode changes

The session resets when Netflix advances to a new title, so cues from the previous episode are not reused.

You turn Dubstack off

The in-player pill restores the caption state you had before Dubstack took over.

A better viewing habit

Read first. Check second.

Put the learning language on top and use blur mode on the translation. Try to understand the spoken line, reveal the translation, then replay it once with Alt-R.

When a word-by-word translation is misleading, select the phrase rather than a single word. Premium can explain the expression in the context of the full subtitle line.

Save only the lines you would actually want to see again. The export keeps the surrounding sentence, which is usually more useful than an isolated word.

Good to know

Dubstack does not create subtitle tracks

Netflix must make the selected languages available for the current title. Catalog availability differs by country and profile language.

Not affiliated

Netflix remains the streaming service

Dubstack is independently built and is not affiliated with, endorsed by, or sponsored by Netflix.

Chrome extension · Netflix and YouTube

Try it on a title with two subtitle tracks.

The free plan includes dual subtitles, lookup, replay, blur, saved lines, and export.