Word-Hugging Dual Subtitle Pills
Unlike bulky black boxes that cover the video, Subkio uses sleek, draggable pills that hug only the words with adjustable opacity.
Xem YouTube & Netflix với Hai Phụ Đề Song Song bằng mọi ngôn ngữ.
Display original and translated subtitles side by side in clean, word-hugging pills. Train your listening with Blur-to-Reveal mode, look up any word on hover, and save phrases in one click with no account required.
No account or login required
15 min/day Free Forever
Works on YouTube & Netflix
NETFLIX • FR → EN
Playing • Dual Subtitles Active
Interactive Live Demo: Hover or tap any word in Subtitle 1, or hover Subtitle 2 to unblur
Up and Running in 30 Seconds
No complicated dashboards, no forced account signups, and no cluttered sidebars blocking your video.
01
Add Subkio to Chrome
Install Subkio in one click on Google Chrome, Edge, Brave, Opera, or Arc. No registration or email required.
02
Open YouTube or Netflix
Start any video. Subkio automatically detects the true original spoken audio track and reconstructs full sentences.
03
Learn Naturally While Watching
Read dual subtitles, blur the translation to test your ear, hover over unfamiliar words, and export saved vocabulary to CSV.
Why Standard YouTube Auto-Captions Fail Language Learners
Native YouTube auto-captions display choppy 2-word fragments and often translate from the wrong audio track. Subkio rebuilds natural sentences in real time.
Standard YouTube Auto-Captions
[we never] ... [really notice] ... [how fast]
Choppy word-by-word fragments break grammar and context, making accurate translation impossible.
Subkio Complete-Sentence Timeline
On ne remarque jamais vraiment à quel point le temps passe vite.
We never truly notice how fast time passes.
Subkio merges JSON3 word streams into complete, grammatically accurate sentences and pre-translates 5 cues ahead.
More Than Just Two Lines of Text
Every tool you need to turn passive video watching into effortless daily language acquisition.
Blur-to-Reveal Listening Mode
Keep Subtitle 2 blurred while listening to the original audio. Simply move your mouse over the subtitle whenever you need to check the meaning.
1-Click Word & Phrase Dictionary
Hover over any word in Subtitle 1 for an instant translation tooltip. Click 1 to 3 words in a row to save idioms and multi-word expressions.
Smart Auto-Pause on Hover
Never miss a fast dialogue line again. Subkio automatically pauses playback when your cursor enters the subtitle and resumes when you move away.
Inline Floating Video Toolbar
Save phrases, adjust font size (A- / A+), cycle background opacity, or toggle blur directly on the video without opening the extension popup.
Saved Vocabulary & 1-Click CSV Export
Review all your saved words and sentences inside the popup and copy them to your clipboard or export a clean CSV file for Anki, Quizlet, or Excel.
How Subkio Compares to Other Subtitle Extensions
See why learners switch from bloated sidebars and basic translators to Subkio.
| Capability / Feature | Subkio | Sublo | Language Reactor | Trancy | Migaku |
|---|---|---|---|---|---|
| Dual Subtitles on YouTube & Netflix | Yes (Clean word-hugging pills) | Yes (Basic overlay) | Yes (Heavy sidebar UI) | Yes (Full theater takeover) | Yes (Complex setup) |
| Fixes Choppy YouTube Auto-Captions into Full Sentences | Yes (JSON3 Complete-Sentence Engine) | No | Frequently fails on ASR | Partial | Yes |
| Blur-to-Reveal Listening Mode (Hover to Unblur) | Included in Free & Pro | No | Partial | Yes | Yes |
| 1-Click Word Hover Dictionary + Multi-Word Phrase Save | Yes (1 to 3 words in a row) | No dictionary or saving | Requires login & Pro | Requires account login | Requires $10/mo plan |
| Inline Floating Video Toolbar (Save, A-, A+, Opacity, Blur) | Yes (Directly above subtitles) | No (Must open popup) | Bottom player bar | Side drawer | Top bar |
| Works Immediately Without Account Login | Yes (100% local privacy) | Yes | Requires Google login for saves | Requires account registration | Requires account & subscription |
| Free Plan Available | Yes (€0 Forever, 15m/day) | Yes (15m/day, no learning tools) | Yes (Basic only) | Limited trial | No free plan (10-day trial) |
| Starting Price & Lifetime Ownership Option | €1.66/mo (Yearly), €2.99/mo, €34.99 Lifetime | €3.89/mo (No Lifetime plan) | $4.99/mo (No Lifetime plan) | $3.49 to $5.99/mo (No Lifetime plan) | $10/mo or $240 to $290 Lifetime |
Start Free Forever. Upgrade for Unlimited Immersion.
All paid plans include a 14-day money-back guarantee and instant License Key delivery.
Free
€0
/ forever
15 minutes per day • Forever free
- 15 minutes of dual subtitles every day
- 58+ languages on YouTube & Netflix
- Blur-to-Reveal listening mode
- Save up to 5 favorite phrases
Pro Monthly
€2.99
/ mo
Billed monthly (€2.99/mo). Cancel anytime.
- Unlimited daily watching time
- 1-Click Word Hover Dictionary
- Auto-Pause on Hover playback control
- Unlimited saved phrases & CSV export
Most Popular • Save 45%
Pro Yearly
€1.66
/ mo
Billed €19.99 once per year (€1.66/mo).
- Unlimited daily watching time
- 1-Click Word Hover Dictionary
- Auto-Pause on Hover playback control
- Unlimited saved phrases & CSV export
- Works across up to 3 personal devices
Best Value • Pay Once
Pro Lifetime
€34.99
€59.00
One-time payment of €34.99. Own Pro forever.
- Unlimited daily watching time
- 1-Click Word Hover Dictionary
- Auto-Pause on Hover playback control
- Unlimited saved phrases & CSV export
- Works across up to 3 personal devices
1
1. Choose Your Pro Plan
Complete your secure checkout via our Merchant of Record (VAT/taxes handled automatically).
2
2. Receive Instant License Key
Your unique key (XXXX-XXXX-XXXX-XXXX) is displayed immediately and sent to your email.
3
3. Activate Inside Subkio Popup
Open the Subkio extension icon, click the 'Pro License' tab, paste your key, and unlock Pro.
Everything You Need to Know About Subkio
How does Subkio display two subtitles at once on YouTube and Netflix?
Subkio overlays two customizable subtitle tracks directly inside the native YouTube and Netflix video player. Subtitle 1 displays the original spoken language (or a translation), while Subtitle 2 displays your target translation language simultaneously.
Do I need to create an account or log in to use Subkio?
No. Subkio works immediately after installation without requiring any email registration or Google login. All your settings and saved phrases are stored locally in your browser.
How do I activate my Subkio Pro license key after purchasing?
After purchasing Pro Monthly, Pro Yearly, or Pro Lifetime, you receive a license key by email. Click the Subkio icon in your browser toolbar, open the 'Pro License' tab, paste your key, and click Verify to unlock unlimited access immediately.
How does Subkio fix choppy YouTube auto-generated captions?
Standard YouTube auto-captions often appear two words at a time and break sentence structure. Subkio's Complete-Sentence Engine reads the underlying JSON3 caption timeline, detects the true original spoken audio language, and merges fragments into smooth, natural sentences.
What is your refund and cancellation policy?
You can cancel monthly or yearly subscriptions at any time in one click. In addition, all first-time Pro purchases are backed by a 14-day money-back guarantee. Simply contact support@subkio.com.