Notes on local translation.
How free, private, offline-capable translation works — architecture, models, and deep-dive engineering guides.

How Document Translation Works: Word, PowerPoint, Excel & EPUB in Your Browser
How our document translator handles Word, PowerPoint, Excel and EPUB locally: the zip trick, format preservation, batch workspace, and on-device AI.

Why Free Text to Speech Tools Cannot Give You a File
Every browser can already speak. So why does no free text to speech tool let you download the audio? The answer is one line of the Web Speech spec.

Running Whisper in a Browser: What It Actually Takes
Whisper transcribes speech in the browser with no server at all. How it is fast enough, why raw segments are not subtitles, and the one setting worth 17x.

How to Translate SRT and VTT Subtitles: Timestamps, Bilingual Output & Privacy
Free subtitle translator for SRT and VTT files. Keep timestamps accurate, export bilingual captions, and translate privately in your browser offline.

How a Local PDF Translator Works (and Why Layout Breaks)
How does a local PDF translator work? Explore layout reconstruction, OCR for scans, dual AI translation engines, and private browser-based PDF translation.

How LangsAny Works: Free Translation That Runs in Your Browser
How can a translator be free, private, and work offline? A plain-language tour of the local AI engine behind LangsAny — models, WASM, and caching.

How to Translate Offline: Use LangsAny Without Internet
Step-by-step guide to offline translation: prepare a language pair once, then translate free on a plane, abroad without data, or anywhere offline.

Online vs Offline Translation: What Do They Actually Mean?
LangsAny is an online website — yet it translates offline. Untangling what online, offline, and local really mean for translation tools and privacy.

Why We Built a Free Translator That Never Uploads Your Text
Every translation you paste into a typical web translator is uploaded to a server. Who that affects, why it matters, and how local AI removes the risk.

Which Languages Can You Translate with LangsAny?
All languages LangsAny translates free today — plus how English pivoting works and our roadmap toward 200 languages with on-device AI models.
Ready to translate without uploading?
Free translate in your browser — private, unlimited, and offline-capable. No account required.
Open the translator