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Overline

Updated: Sep 10, 2026

Free Chrome extension that overlays real-time AI captions and live translation on any browser video in 10 languages — no subtitles or tab switching needed.

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About Overline

Overview

Overline is a free Chrome extension that adds real-time AI captions and live translation on top of any browser video. It needs no subtitle files and no tab switching — captions appear as an overlay while audio plays.

The extension works on YouTube, Coursera, Netflix, Udemy, Zoom recordings, Loom, and local video files opened in the browser. It is available now on the Chrome Web Store.

Key Benefits

  • Real-time captions powered by Deepgram streaming speech recognition appear within milliseconds of speech, at about 112 ms latency
  • Live translation into 10 languages — Persian, Arabic, Spanish, French, German, Japanese, Chinese, Korean, Portuguese — as words are spoken
  • Captions any video playing in a browser tab, from YouTube and Netflix to Zoom recordings and Loom
  • Full transcript history is saved to your account after every session
  • Export transcripts as TXT or SRT for notes, subtitles, or review
  • Free to install with no credit card required

How It Works

Install the Overline extension from the Chrome Web Store and sign in with your account. Open any video on YouTube, Coursera, Netflix, or another site, then click the Overline icon. Hit Start Captions to see real-time captions as an overlay and switch languages instantly.

Use Cases

  • Students follow lectures on YouTube or Coursera in a language they are learning
  • Coursera and Udemy learners read live captions instead of hunting for subtitles
  • Professionals review Zoom recordings and Loom videos with instant captions
  • News viewers translate broadcasts such as NHK News from Japanese to English
  • Netflix viewers watch foreign-language content with live translated captions

Why Choose This Product

Overline captions any video playing in a browser tab with no subtitle files or downloads. Its captions run on Deepgram's streaming speech recognition, and translation spans 10 languages with live language switching that does not reload the video.

Overline Pros & Cons

Strengths
  • Free to install with no credit card required
  • Real-time captions at about 112 ms latency via Deepgram
  • Live translation into 10 languages
  • Works on any browser video: YouTube, Netflix, Coursera, Zoom, Loom
  • Transcript history with TXT and SRT export

Key Features

🎙️

Real-time captions

Deepgram streaming speech recognition shows captions within milliseconds of speech, at about 112 ms latency.

🌐

Live translation

Captions translate live into Persian, Arabic, Spanish, French, German, Japanese, Chinese, Korean, and Portuguese as words are spoken.

🗂️

Transcript history

The full transcript of every session is saved to your account automatically.

📥

TXT and SRT export

Download saved transcripts as TXT or SRT files for notes, subtitles, or review.

🎬

Any browser video

Captions any video playing in a browser tab, including YouTube, Netflix, Coursera, Udemy, Zoom, and Loom.

🔀

Instant language switch

Switch caption languages live without reloading the video.

Overline Pricing

View full pricing →
Free
Free/mo
  • 20 minutes of captions per month
  • Captions in 10 languages
  • Transcript history saved to your account
  • TXT + SRT export
Most popular
Plus
$12.99/mo
  • 10 hours (600 minutes) of captions per month
  • Captions in 10 languages
  • Transcript history saved to your account
  • TXT + SRT export
  • Priority processing
Pro
$34.99/mo
  • 30 hours (1,800 minutes) of captions per month
  • Captions in 10 languages
  • Transcript history saved to your account
  • TXT + SRT export
  • Priority processing
Compare plans
Feature
Free
Free/mo
Plus
$12.99/mo
Pro
$34.99/mo
20 minutes of captions per month
Captions in 10 languages
Transcript history saved to your account
TXT + SRT export
10 hours (600 minutes) of captions per month
Priority processing
30 hours (1,800 minutes) of captions per month

Pricing extracted from the product website and may change. Check the source for current details.

Frequently asked questions about Overline

Does it work on Netflix / YouTube / Zoom?

Yes — Overline works on any video playing in your browser tab. YouTube, Netflix, Coursera, Udemy, Zoom recordings, Loom, and local video files opened in the browser all work; if audio plays in a tab, Overline can caption it.

What languages are supported?

Overline translates captions into 10 languages: Persian, Arabic, Spanish, French, German, Japanese, Chinese, Korean, and Portuguese, plus English. You can switch the caption language live without reloading the video.

Can I export my transcripts?

Yes. After each session your full transcript is saved to your account, and you can download it as TXT or SRT files — ready for notes, subtitles, or review.

Is Overline free?

Overline offers a free plan with optional paid upgrades. See the pricing section for what's included in each tier.

How much does Overline cost?

Overline offers the following plans: Free, Plus, Pro. See the pricing section for what's included in each tier and any per-seat or usage-based costs.

What platforms does Overline support?

Overline is available on: Web.

How Overline compares

 
Overline logo
OverlineThis
Starting priceFreeFreeFree
Pricing modelFreemiumFreecontact_salesFree
PlatformsWebWeb, macOSWeb, macOS, Windows, iOS, AndroidWeb
Top features
  • Real-time captions
  • Live translation
  • Transcript history
  • Browser word swap
  • Font patching
  • Custom replacement
  • Automated accessibility scans
  • AI-powered duplicate filtering
  • Zero false positives
Rating