Japanese日本語
君が昨日くれた本は、とても面白い。
The clause comes before the noun, with no relative pronoun; the predicate ends the sentence.
Chrome and Edge extension · Seven languages
Select a sentence.
See its structure.
You’ve learned the grammar, yet you still can’t spot it in real articles. SyntaxMap breaks down sentences on the page you’re reading, in English, Chinese, Japanese, French, Spanish, Korean, or German: the main clause first, then each clause inside it, with the reason behind every part, explained in your native language.
The extension sends a sentence only when you click “Break it down”, and never sends the page address, the rest of the page, or your browsing history.
The breakdown opens right next to what you’re reading
A side panel shows the sentence pattern, the main clause, and the role of every part, without taking you off the page.
SyntaxMap
SyntaxMap
A CLOSER LOOK
SVC · with a relative clause
Subject
Verb
Object
Complement
Modifier
Every part has a jobClick a colored part above to see the role it plays at this level of the sentence.
01Main clause first
El libro es fascinante.
Set aside the relative clause que me regalaste ayer, which modifies libro, and you are left with El libro + es + fascinante. The full subject is El libro que me regalaste ayer.
02Then the clauses · 1
Relative clause
que me regalaste ayer
The relative pronoun que refers to el libro and is the direct object of regalaste inside the clause.
A Spanish sentence, explained in English: the panel always explains in your native language. Click a colored part to see its role.
Seven languages, learn in any direction
English, Chinese, Japanese, French, Spanish, Korean, and German. Whichever one is your native language, you can study any of the others, with no setting to switch: SyntaxMap recognizes the language of the sentence you select, breaks it down by that language’s own rules, and explains it in your language. All six sentences below mean “The book you gave me yesterday is fascinating.”
FrenchFrançais
Le livre que tu m'as offert hier est passionnant.
que opens the clause; the object pronoun m' goes before the auxiliary as.
SpanishEspañol
El libro que me regalaste ayer es fascinante.
que opens the clause; the subject tú is left out, carried by the ending -aste.
Korean한국어
네가 어제 준 책은 정말 재미있어.
The verb takes the adnominal form 준, and the whole clause sits before the noun.
GermanDeutsch
Das Buch, das du mir gestern geschenkt hast, ist spannend.
Commas set off the clause, and its finite verb hast moves to the end.
Chinese中文
你昨天给我的那本书很有意思。
The clause comes before the noun and ends with 的, with no relative pronoun; the adjective is the predicate on its own.
Subject Verb Complement Modifier
Why SyntaxMap
No grammar lessons. Just the sentence you’re reading.
SyntaxMap isn’t a course or a question bank. It shows up next to the sentence you’re already reading and maps the rules you’ve learned onto the structure in front of you.
Practice on real content
News, papers, docs, comment threads: break down whichever sentence trips you up, without copying and pasting or leaving the page.
Main clause first, then the rest
Optional modifiers are set aside to reveal the subject, verb, and object or complement. Then each clause is explained in turn: which level it belongs to and what it modifies.
A reason for every call
Click any part to see the role it plays in its clause and why. You get the reasoning, not just the conclusion.
Take the method with you
Every breakdown ends with steps you can reuse, from finding the verb to sorting out clause levels, so you can untangle the next long sentence yourself.
How it works
Three steps to see how a sentence is built
Select
Select a sentence in any of the seven languages on any web page. A “Break it down” button appears next to it.
Break down
Click the button. The AI finds the main clause first, then unpacks the clauses and modifiers. It usually takes less than a minute.
Compare
Color-coded parts, the main clause, clause-by-clause notes, grammar points, and the reasoning steps appear together in a side panel. Press Esc to close it.
Honest by design
Show the reasoning. Respect the boundaries.
Labels must match the original, word for word
SyntaxMap checks that every labeled part fits back into the original sentence. If they don’t line up, the result isn’t shown and you’re asked to try again.
Ambiguity gets flagged
The AI can be wrong. When a sentence is ambiguous, lacks context, or is incomplete, the analysis says where it’s unsure instead of pretending there’s only one answer.
Only the sentence you select
The extension only watches for your selection and never analyzes anything on its own. It sends the selected text only when you click Break down, and never sends the page address, the rest of the page, or your browsing history.
Your account and data
Why you sign in, and what we use
To use SyntaxMap, you sign in on this website and connect the extension to your account with a device token. You can sign in with a one-time email code or with your Google account.
What your account is for
Your account lets the extension use SyntaxMap’s analysis service without an AI key of your own. It keeps track of your plan and usage limits, and lets you manage the browsers connected to it.
Signing in with Google
If you choose Google, we receive only your name, email address, profile picture, and Google account ID. We use them only to create your account, sign you in, and show who is signed in. We can’t see your Gmail, Drive, contacts, or anything else in your Google account.
Your data, your choice
We don’t sell your data, use it for ads, or train AI models on it. You can delete your account and its data at any time. Read the details in our Privacy Policy.
FAQ
Frequently asked questions
Which languages does it support?
English, Chinese (simplified or traditional), Japanese, French, Spanish, Korean, and German, in any direction: your native language can be any one of them, and you can study all the others. You don’t need to pick a language for each sentence: SyntaxMap recognizes it and breaks it down by that language’s grammar. Other languages, such as Italian, aren’t supported yet.
What language are the explanations in?
Your native language, which you choose in your account under Settings → Language. The sentence stays in its own language, while the roles, notes, and reasoning are written in yours. The extension and the account pages switch to that language too.
Do I need my own AI API key?
No. Sign in, connect the extension to your account, and SyntaxMap’s service runs the analysis.
Which websites does it work on?
Regular web pages in desktop Chrome and Edge. It doesn’t yet work on browser-internal pages, the built-in PDF viewer, cross-origin iframes, or text in input boxes and editors.
How much text can I break down at once?
One sentence at a time, up to 1,600 characters. A whole paragraph lowers the quality of the analysis, so select one sentence at a time.
Is the analysis always correct?
No. The AI can make mistakes or give an incomplete structure. SyntaxMap checks that every label matches the original sentence, but it can’t verify every linguistic judgment. Treat it as a study aid, and use the context to decide ambiguous cases.
What data is sent and stored?
Only the sentence you select, and only when you click Break down. The page address, the rest of the page, and your browsing history are never sent. Sentences and their analyses are stored on our servers and saved to your analysis history. See our Privacy Policy for details.
Get started
Hand it the next long sentence you can’t untangle
After installing, connect the extension to your SyntaxMap account, then select a sentence on any page and click “Break it down”.
Install extension Install it in Chrome or Edge on a computer