MATH Keys compiles LaTeX in your browser with a click-to-insert STEM keyboard, a live PDF beside your source, and AI Fix that reads the compile log for you. No TeX distribution, no package manager, no template hunting.
MATH Keys is an online LaTeX editor with an on-screen STEM keyboard. You click a symbol instead of remembering its command, the document compiles to a real PDF next to your source, and when a compile fails AI Fix explains the log and proposes the correction. Everything runs in the browser, so there is no TeX distribution to install and nothing to reinstall on a new machine.
Free accounts include 3 Typst and 3 editable LaTeX documents with the same keyboard and the same live PDF. Plus at $4.99/month and Pro at $9.99/month unlock unlimited documents, and the free Chrome extension copies LaTeX or an image of any equation into Google Docs, Slides, Word, PowerPoint, Keynote, and Gmail.
The parts of LaTeX that cost you evenings — setup, symbol recall, and cryptic errors — are the parts we replaced.
01
Basic, Pure Math, Statistics, Physics, Chemistry, and Graphing modes put integrals, matrices, piecewise cases, nabla, and bra-ket notation one tap away. The keyboard writes the markup, so you learn syntax by reading it rather than memorising it first.
02
Documents compile with pdflatex on our workers and render through PDF.js beside the source. Click text in the PDF to jump back to the line that produced it, and read the full log instead of guessing which package failed.
03
A missing brace or an undefined control sequence should not cost an evening. AI Fix reads the compile log, explains the failure in plain language, and offers the edit as a diff you accept or reject.
04
Draw a molecule on the structure canvas and drop it in as chemfig or mhchem. Plot in Cartesian, polar, or 3D and export the figure as an image or TikZ — no separate tool, no pgfplots syntax to look up.
05
Folders, search, starring, and files imported from another document keep a whole course in one place. Share as editor, commenter, or viewer, co-edit live with presence, leave comments, and roll back through version history.
06
Start with 3 Typst and 3 LaTeX documents. Convert between formats on Plus (10/month) or Pro (unlimited) when a journal, lab, or professor asks for .tex.
No download, no template repository, no local build chain.
Step 01
Sign in with Google or an email address and create a document in Math Drive. There is nothing to install and no TeX distribution to configure.
Step 02
Type prose normally and click the STEM keyboard for notation. Switch modes for statistics, physics, chemistry, or graphing, and save any snippet you repeat as a custom key.
Step 03
Compile to a live PDF, send failures to AI Fix, then download the PDF or invite collaborators as editors, commenters, or viewers.
A keyboard-first editor, a plain hosted TeX editor, and a local TeX distribution all produce a PDF. They differ in what you set up and how notation gets in.
| Feature | MATH Keys | A plain hosted TeX editor | A local TeX install |
|---|---|---|---|
| Getting started | Sign in and type | Sign in and type | Install a multi-gigabyte distribution |
| Entering notation | Six-mode STEM keyboard, click to insert | Type the commands yourself | Type the commands yourself |
| PDF preview | Live PDF from a server compile | Live PDF from a server compile | Local build at your machine's speed |
| When a compile fails | AI Fix explains the log and edits | Compile log and documentation | Compile log and a web search |
| Chemistry structures | Draw on a canvas → chemfig / mhchem | Write the markup yourself | Write the markup yourself |
| Graphs and plots | Cartesian, polar, 3D → image or TikZ | Write TikZ or pgfplots yourself | Write TikZ or pgfplots yourself |
| Typst in the same editor | Yes, with Typst↔LaTeX conversion | Usually not included | A separate install |
| Equations in Google Docs | Free Chrome extension | Not included | Not included |
| Free tier | Typst documents, keyboard, live PDF | Varies by host | Free, but you maintain it |
The right-hand columns describe the common setup rather than one specific product; tools change quickly, so check the current feature list and pricing before you decide.
Written for people whose deadline is the document, not the toolchain.
Problem sets with real notation, without spending the first night on a TeX install. Start free with 3 Typst and 3 LaTeX documents; upgrade when a course needs more.
Worksheets, exams, and keys built from shared boilerplate files, then shared with a link. Chemistry and plots come from the same keyboard.
Editable LaTeX for journal and lab templates, live collaboration with comments and suggestions, and version history when a co-author disagrees.
The free Chrome extension is the same keyboard: build the equation, then copy it as an image or LaTeX into Google Docs, Slides, Word, PowerPoint, Keynote, or Gmail.
Q1
A LaTeX editor is software for writing documents in LaTeX — the markup language used for papers, problem sets, and books that need precise mathematics. MATH Keys is an online LaTeX editor: a STEM keyboard inserts the commands, a live PDF shows the compile, and AI Fix explains errors, with no TeX distribution to install.
Q2
MATH Keys has a free plan that covers the whole writing loop: 3 Typst and 3 LaTeX documents, the STEM keyboard, a live compiled PDF, and limited AI Fix. Plus at $4.99/month makes documents unlimited and adds Typst→LaTeX conversion. The Chrome extension, which copies equations as LaTeX or images into Google Docs and Word, is free forever.
Q3
No. Compiling happens on our servers, so a browser is the only requirement. Nothing to install on a laptop, a lab machine, or a Chromebook, and nothing to set up again when you switch computers.
Q4
Most hosted editors give you a source pane, a compile button, and a PDF. MATH Keys adds the input layer on top of that: a six-mode STEM keyboard so you click notation instead of recalling commands, AI Fix that reads the compile log and proposes the edit, a chemistry canvas that exports chemfig or mhchem, graphing that exports TikZ, and Typst in the same editor with Typst↔LaTeX conversion.
Q5
Yes. The keyboard inserts the markup for integrals, sums, matrices, piecewise cases, vectors, distributions, and chemistry, and you can save any snippet you type often as a custom key. Because the inserted source stays visible, most people pick up the syntax by reading their own document.
Q6
Open the compile log in the editor, or send it to AI Fix. AI Fix reads the log, explains what broke in plain language — a missing brace, an undefined control sequence, a package that was never loaded — and offers the correction as a diff you can accept or reject.
Q7
Yes, with the free MATH Keys Chrome extension. Build the equation on the same STEM keyboard, then copy it as an image or as LaTeX and paste it into Google Docs, Slides, Word, PowerPoint, Keynote, or Gmail.
Q8
Yes. Chemistry mode includes a structure canvas that exports as an image or as chemfig / mhchem markup, and graphing mode plots in Cartesian, polar, and 3D and exports the figure as an image or TikZ.
Q9
Yes. Documents support live co-editing with presence, comments, and suggestions you accept or reject. Free includes one editor per document, Plus allows three, and Pro is unlimited. Version history is 7 days on Free and unlimited on paid plans.
Q10
Yes. Compiled PDFs download from the editor, and your document source stays yours — LaTeX on Plus and Pro, or Typst with an export to LaTeX if you need .tex elsewhere.
Create an account, write with the keyboard, and watch the PDF appear. Start free with 3 Typst and 3 LaTeX documents, or go unlimited on Plus at $4.99/month.
