Czenglish subtitles, automatically

české titulky

Upload a video and get subtitles that keep English words English — after Czech grammar has changed their endings.

Free to try · no card needed

Nedávalo mi to smysl, rozhodně to nebylo fér.

Real Czech, in a subtitle font that renders it. Every word is timed on its own — that is the highlight moving.
0.8%
Harmar, word error rate
12.8%
whisper-large-v3

Measured on 20 FLEURS clips, 2026-09-05. That figure is for Czech spoken on its own; accuracy on mixed speech is measured separately and not claimed here. Full method, all 59 languages

Borrowed words are declined

Czech puts English nouns through its case system, and the ending is part of the word as spoken. It is written that way.

Diacritics are part of the word

č, ř, ž, ě and the rest are transcribed rather than stripped to plain Latin letters.

Timing measured, not estimated

Word-level alignment against the audio itself.

Czenglish — two languages in one sentence

Czech takes an English word, gives it a case ending and treats it as native. A transcriber that recognises the English root and writes the clean English word has removed the grammar that made the sentence work — and the result reads as slightly wrong in a way that is hard to point at.

Wrong word? Fix it in seconds

Every word is editable with the video playing beside it, and you can drag any word’s timing by hand.

Nothing is automatic-or-nothing. You always see the result before you export.

The Harmar editor — every word editable, with the video playing beside itA real project — the editor works the same in every language.
Fonts
28 render Czech properly
Choosing the language
Automatic — we hear it
Translation
Into 60 other languages

Questions

Are declined English words handled?+

They are transcribed with the ending they were spoken with rather than reset to the English base form.

Will the diacritics be right?+

They are transcribed as part of the word. Anything wrong is editable word by word.

What can I export?+

Burned-in subtitles for Reels, TikTok and YouTube, or SRT and VTT files.

Other languages

Try it on one video

Free, no card. You will see the result before you decide anything.

Add Czenglish subtitles — free