Instant Explanation Shortcuts
Highlight text or a region and trigger the shortcut that fits the moment. IrukaDark responds in place with fast, context‑aware explanations—no extra windows.
Everything on your screen, explained fast
No more wasting time copying, switching screens, pasting, and waiting for output. Text, code, images, tables, URLs—IrukaDark explains every bit instantly and keeps you moving fast.
const result = await fetchUserData().then(data => {
return data.reduce((acc, user) => ({ ...acc, [user.id]: user }), {});
}).catch(error => console.error(error));
What does this mean?
This `reduce` method takes each element (user) from the array and converts it into an object. `acc` is the accumulator with an initial value of an empty object `{}`. It creates a hash map with each user's ID as the key and the user object as the value.
Information
See It in Action
Select text or capture an area—IrukaDark explains it on‑screen.
Work Faster on Your Computer
No more “I don’t get it.” Instant, context‑aware understanding keeps you moving.
Stay in Flow
Skip window‑switching and copy‑paste. Ask in place with Option+A, or capture an area with Option+S. Resolve questions without breaking focus.
Simple & Private
IrukaDark stores no data and doesn’t train on your content, helping protect your privacy.
Great For
Turn every “What does this mean?” into quick, clear understanding.
Programming & Code Reading
Meet unfamiliar APIs or patterns while reading code? Get quick explanations right in place.
New Role or Industry
Ramp up faster by understanding domain‑specific terms and concepts when starting a new job or industry.
Deeper Understanding
Go beyond dictionary meanings to intent, nuance, and why an expression is used.
Academic Papers & Research
When complex concepts appear in papers or research, get clear explanations in plain language.
English Websites & Docs
When translation tools fall short, get natural, context‑fit explanations for English technical content.
Contracts & Legal Documents
Understand specialized clauses and terminology when reviewing important legal documents.
Works where you work
IrukaDark rides on top of your tools—no context switching.
On websites
Web-
Programming
Explain unfamiliar code, APIs, and patterns in place.
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Marketing jargon
Turn buzzwords into clear, plain‑language meaning.
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Academic papers
Summarize concepts, formulas, and study context.
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Foreign websites & materials
Get natural explanations beyond literal translation.
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Contracts & legal documents
Clarify clauses, terms, and what they imply.
On apps
Apps-
Other AI tools
Summarize outputs or prompts without switching windows.
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Terminal
Explain commands, flags, and errors instantly.
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Social media
Unpack threads, acronyms, and context at a glance.
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Editors
Understand code or docs as you write.
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Design tools
Describe layers, components, and UI copy quickly.
For complex images
Images-
Diagram explanations
Label parts and walk through flows.
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Map reading
Interpret routes, legends, and points of interest.
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Uncopyable text
Select text in images to read and explain.
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Photo explanations
Explain what’s shown and key details.
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Online meeting screens
Summarize slides and screen shares as they appear.
How It Works
Use global shortcuts to trigger IrukaDark instantly.
Option+A — Quick Explain
Mac: Option+A / Windows/Linux: Alt+A
Select text in any app and press Option+A (Alt+A on Windows/Linux) for a concise explanation that keeps you in flow.
Option+Shift+A — Deep Dive
Mac: Option+Shift+A / Windows/Linux: Alt+Shift+A
Need extra context or step-by-step reasoning? Press Option+Shift+A (Alt+Shift+A) to request a more thorough breakdown.
Option+R — Translate & Rephrase
Mac: Option+R / Windows/Linux: Alt+R
Turn the selection into natural Japanese or English with Option+R (Alt+R). Perfect for quick translations or rewrites.
Option+1 — URL Quick Summary
Mac: Option+1 / Windows/Linux: Alt+1
Select a URL in any document, hit Option+1 (Alt+1), and IrukaDark fetches the page to deliver an on-the-spot overview.
Option+Shift+1 — URL Deep Summary
Mac: Option+Shift+1 / Windows/Linux: Alt+Shift+1
Press Option+Shift+1 (Alt+Shift+1) on a highlighted link for a richer breakdown with key sections and takeaways.
Option+S — Screenshot Explain
Mac: Option+S / Windows/Linux: Alt+S
Drag over images, charts, or PDFs and press Option+S (Alt+S) to explain what is on screen without leaving your app.
Option+Shift+S — Screenshot Deep Dive
Mac: Option+Shift+S / Windows/Linux: Alt+Shift+S
Press Option+Shift+S (Alt+Shift+S) for a more detailed analysis of the region you capture—ideal for dense visuals.
How It Works 2
Slash commands that build on your latest explanation.
/what do you mean?
Ask for a deeper dive on the previous answer, adding missing context or nuance.
/next
Continue the last explanation so IrukaDark keeps elaborating without reselecting content.
/table
Reformat the previous response into a clean table to compare points at a glance.
/translate
Translate the last explanation into 10+ supported languages—or paraphrase in the same language—just by naming the target.
/web
Toggle web search mode so IrukaDark pulls in fresh results while it explains.
Supported Languages
IrukaDark delivers explanations in 17 languages worldwide.
Languages:
- English (en)
- 日本語 (ja)
- Español (es)
- 简体中文 (zh-Hans)
- 繁體中文 (zh-Hant)
- हिन्दी (hi)
- Português (Brasil) (pt-BR)
- Français (fr)
- Deutsch (de)
- العربية (ar)
- Русский (ru)
- 한국어 (ko)
- Bahasa Indonesia (id)
- Tiếng Việt (vi)
- ภาษาไทย (th)
- Italiano (it)
- Türkçe (tr)
Download
Download for macOS. Open‑source and free.
FAQ
Answers to common questions about IrukaDark
What platforms are supported?
macOS. Download the installer directly from the Downloads page.
How is it different from a translator?
It explains text in context—beyond word‑for‑word translation—so you get intent, background, and plain‑language explanations instantly.
Does it store my data?
No. IrukaDark stores no data and does not train on your content, helping protect your privacy.
Do I need any developer tools?
No. Just download the installer from the Downloads page and follow the setup prompts.
How do I use it quickly?
Select text and press Option+A for an explanation. For images and graphs, select an area and press Option+S for screenshot analysis.
Is it free and open source?
Yes. IrukaDark is open source and free to use. Install it via the Downloads page anytime.
Does it require an internet connection?
Yes. IrukaDark connects to AI services to generate explanations. Only the content you select (or capture) is sent over HTTPS; IrukaDark does not store your data.
What OS permissions are required?
| Permission | macOS |
|---|---|
| Screen capture | Required: Screen Recording |
| Accessibility | Required: Accessibility (enables on‑screen selection and global shortcuts) |
| Admin rights | Not required |
| Network (HTTPS) | Allow outbound HTTPS |
| Global shortcuts | System Settings → Keyboard/Shortcuts |
What setup do I need on my Mac?
| Item | macOS |
|---|---|
| Developer tools | Not required for normal use |
| Screen capture | Screen Recording permission required for screenshots |
| Internet | Allow outbound HTTPS |