Text explanation
Highlight language and define it in context.
Kith explains the selected phrase using the document around it, so the meaning matches the source instead of a generic dictionary entry.
For the curious professional
Knowledge, reclaimed.
A sophisticated knowledge layer for the curious professional. High-density clarity for words, logic, and visuals, instantly within your workflow.
Context-aware explanations
Server-side analysis through Kith backend
Private archive and account controls
On-page explainers
Text and diagrams, explained side by side.
Kith handles both selected text and highlighted diagram regions, then keeps each explanation card anchored to exactly what you marked.
Diagram explanation
Mark a module and explain what it does.
Kith reads the highlighted region as part of the whole diagram and returns a clear explanation of the selected component’s role in the system.
Why Kith
Explanations in place—not another workspace.
Context is everything. Kith understands that a cell means something different to a biologist than it does to a developer. It reads the surrounding context of your document to provide the depth you need, exactly when you need it.
Read through technical language
Highlight terminology from medical research, code refactoring, legal compliance, or design theory without losing the page you are already reviewing.
Text
Selection plus surrounding context
Inspect visuals in place
Use marked-region capture for charts, medical diagrams, interfaces, blueprints, and other visuals whose meaning is hard to explain with text alone.
Vision
Visual analysis in MVP
Build a personal encyclopedia
Save the explanations worth keeping so repeated concepts accumulate into a private reference library instead of vanishing with the tab.
Archive
Saved explanations tied to source context
Built for professionals
The knowledge layer your workflow is missing.
Every profession runs on specialised language and dense visuals. Kith sits inside the browser so answers arrive where you already work — no app-switching, no copy-paste, no context lost.
Understand without interruption
Contracts, research papers, API docs, medical reports — professionals encounter unfamiliar terms daily. Kith reads the surrounding context and returns a precise explanation without a single tab switch.
Before
Open a new tab, search, scan results, lose your place, repeat.
With Kith
Highlight the term, read the answer in a card, stay on the page.
Decode visuals instantly
Engineering drawings, medical imaging, financial charts, design mockups — visuals carry meaning that text search cannot reach. Kith's vision mode analyses the selected region in place.
Before
Screenshot the diagram, paste it into a chat tool, wait for an answer.
With Kith
Draw a region on the diagram and read the explanation right there.
Remember what you learned
Every explanation you save becomes a permanent reference tied to its original source and context. Over time, your Archive grows into a personal knowledge base shaped by your actual work.
Before
Look up the same concept again next week because the old answer is gone.
With Kith
Open the Archive, find the saved card, and pick up where you left off.
Trusted across disciplines
Legal
Medical
Engineering
Finance
Research
Design
Education
Policy
How it works
Four steps from install to repeat use.
The flow is short by design so the extension can disappear behind the work instead of becoming another system to manage.
Install the extension
Add Kith to your browser with a single click from this site.
Sign up with your email
Enter your email to start a 3-day free trial instantly. No credit card required.
Highlight or frame
Select text or mark a visual region when the page gets dense enough to slow you down.
Save what matters
Store the recurring explanation in your Archive so the next pass starts with context already in hand.
The Archive
Your reference layer as you read.
Build your personal encyclopedia. Every encounter is indexed. Kith transforms your reading history into a searchable, private asset for a lifetime of reference.
Cognitive Dissonance
Behavioral science
Grid Inertia
Energy systems
Dependency Inversion
Code refactoring
Chain of Custody
Legal compliance
Plans
Start free. Upgrade when you need to.
A 3-day trial with full access, no credit card. Starter and Pro plans scale with your daily reading and visual analysis volume.
Trial
Free$0 for 3 days
30 text + 5 vision requests per day
Starter
$9 /month
100 text + 25 vision requests per day
Pro
Popular$39 /month
300 text + 75 vision requests per day
Trust and operations
Built to be audited, not hidden.
Every part of Kith that touches your data is explicit. No silent background activity, no buried settings, no surprises.
Server-side analysis
All model requests route through the Kith backend. The extension never contacts any AI provider on its own.
Visible account state
Plan tier, daily quotas, and live usage are shown on the account page—nothing runs behind a hidden meter.
Scoped data input
Only the text or image region you select is sent for analysis, along with minimal page context. Nothing else leaves your browser.
Separate billing
Checkout and subscription management happen outside the extension through a dedicated billing portal.
Ready to start
Add Kith to your browser in seconds.
Install the extension, sign up with your email, and start a free 3-day trial. Your account, billing, and usage all live on the web — the extension stays focused on your reading.
Three steps
Install. Sign up. Start working.
- Click Get Extension to add Kith to Chrome, Edge, or Brave.
- Enter your email on the access page to create your account.
- Your 3-day free trial starts immediately — upgrade anytime for more capacity.