Rikuy

Word, PDF and LaTeX in one.

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Type on the typeset page as in Word, get the PDF from real TeX Live, keep a clean .tex that Overleaf, Git and any TeX open. Try it now at https://rikuy.rackebrandt.pe/: no install, no account. If it helps you, a star here is how other people find it.

Rikuy is Quechua for "to see". It is a LaTeX editor in the browser where you type on the typeset page. Click into a paragraph, a formula, a table cell or a footnote on the rendered page and edit it there: Rikuy patches the .tex source in the smallest way that makes the change, and undo gives the source back byte for byte. Real TeX Live 2026 (pdfTeX, XeTeX and LuaHBTeX, compiled to WebAssembly) runs in a Web Worker and makes the PDF. Nothing is installed and there is no account; documents stay in the browser until you send them, as a share link that carries the document itself, a file, or a git push.

Open it at https://rikuy.rackebrandt.pe/ (also reached as https://rackebrandt.pe/rikuy/): the page installs as an app, works offline after one visit and reads and writes Word files. To build the editor on your own machine you need node 22 and Python 3: npm ci && npm run build && npm run serve, then open http://127.0.0.1:8790. The PDF pane also needs the TeX tree, which takes the longer build under Running it.

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