Offline Translate (CTranslate2)

TranslationOfflineCommercial use OK

Fully offline subtitle translation using small per-language-pair NMT models (OPUS-MT via CTranslate2). No cloud, no API key, no rate limits; models download once on first use.

Install it from Subtitld

Settings Add-ons Offline Translate (CTranslate2) Install

Subtitld downloads it, checks its SHA-256, and keeps it updated.

Source on GitHub

Languages: 25
Add-on download: 23–111 MB

Options

In Settings › Add-ons › Offline Translate (CTranslate2) › Configure.

Beam size

Default: 2

Higher = slightly better quality, slower. 1 is greedy/fastest.

Languages

en
pt
es
fr
de
it
nl
ru
uk
pl
tr
ar
zh
ja
ko
hi
cs
sv
da
fi
el
hu
ro
id
ca

Platforms

System	Download
Linux x86-64	110.8 MB
macOS (Apple silicon)	22.8 MB
Windows x86-64	41.0 MB

License

Add-on

MIT

MIT (wrapper); OPUS-MT/Argos models MIT/CC

Versions

0.1.0

Updated 10 October 2026 · From the add-ons catalog Report a problem with this add-on