Section~\ref{sec:resutls} shows our results.LaTeX, in print: "Section ?? shows our results." — and not a word of warning.
Section~@ref(sec:resutls) shows our results.XT1003 did you mean sec:results? · declared in results.xtex
Your PDF looks right.
That's the problem.
LaTeX will typeset a broken reference, an invented citation, a vanished figure — and hand you a beautiful PDF anyway. Vitela finds what LaTeX politely ignores — while you type, before the PDF exists.
It can, because it reads ExactTeX — a superset of LaTeX. Every .tex file you own is already valid ExactTeX: rename it to .xtex and nothing changes; from there, each object you name is one more thing the editor checks.
Free · no account needed · it compiles in your browser, and your project is yours to keep there · sign in to save papers to your account and to compile on the server · still experimental — expect rough edges
Where it saves you
Things we believe
that sound wrong
01The PDF is the last place to look for your errors.
By the time an error reaches print it has already survived every tool you own — and it shows up as a quiet [?], if it shows up at all. Vitela moves the finding to the keystroke: references, citations, figures and tables are typed identities, checked the moment you touch them.
02A good tool should trust you less.
Most editors trust that your \ref means something. Vitela asks for evidence. Every claim in your document that can be checked, is — and everything that cannot be checked keeps working exactly as LaTeX defined it, untouched.
03Writing more syntax prevents disasters.
One small annotation — @id(sec:results) — gives the editor real information about your document, whether the writer is you or an AI. That is what buys checked references, safe cross-file renames and errors written in your own names. The coverage meter shows how much is under contract; plain LaTeX reads 0% and still compiles.
04The text you reject is worth keeping.
Reviews live inside the file as plain text — suggest, delete, comment, all signed with who and when. Rejecting a paragraph records it in a sidecar: the argument you threw away in March is still there in September, attributable and recoverable.
05The best AI writes nothing.
An agent in Vitela cannot silently edit: it proposes, as reviewable suggestions in the margin, attributed like any reviewer. You accept or reject. That is the supervision layer machine-written text has been missing.
06An exit door makes people stay.
One click exports your whole project as plain, valid LaTeX — revisions applied, figures and bibliography beside it, ready for any journal on Earth. We can afford to make leaving easy, because the reasons to stay compile in your browser.