How to Compile LaTeX Online (No Install Needed)
By Shihab Shahriar Antor · Updated September 2026 · 6 min read
You can compile LaTeX online in the browser with LetX: open a project, paste or upload your .tex source, and click Compile to get a PDF in seconds. No TeX Live or MiKTeX installation, and it works on Mac, Windows, Linux, and Chromebooks. Online compiling also adds real-time collaboration and shared, reproducible builds.
Why compile LaTeX online
A local LaTeX setup means installing a multi-gigabyte distribution (TeX Live, MiKTeX, or MacTeX), managing packages, and configuring an editor. Compiling online skips all of that: the toolchain runs on the server, so any browser becomes a full LaTeX environment.
- Zero install. No TeX distribution, no package manager, no PATH issues.
- Any device. Mac, Windows, Linux, Chromebook, even a tablet.
- Reproducible builds. Everyone compiles against the same server toolchain. No “works on my machine.”
- Real-time collaboration. Co-authors edit and compile the same document live.
Online vs. local LaTeX
| Local (TeX Live / MiKTeX) | Online (LetX) | |
|---|---|---|
| Install | Multi-GB download + setup | None: open a browser |
| Compile speed | Fast, but setup-dependent | A few seconds on dedicated workers |
| Collaboration | Email files / git | Real-time, unlimited collaborators |
| Packages | You manage updates | Maintained server toolchain |
| Device freedom | Per-machine setup | Any device, same result |
Compile your first document online
Paste this into a new LetX project and click Compile. You get a PDF in a few seconds, no setup:
\documentclass{article}
\begin{document}
Hello, world! Compiled online, no install.
\end{document}Importing an existing project? Use “Upload ZIP”. LetX preserves your .tex files, images, .bib bibliography, and folder structure, then compiles the whole thing in the browser.
What you get beyond a PDF
- Live preview + SyncTeX: click in the source to jump to the matching spot in the PDF and back.
- Automatic BibTeX/biber passes: citations resolve without you running multiple compiles by hand.
- Templates: start from a ready LaTeX template (thesis, CV, IEEE paper) instead of a blank file.
How long a compile takes, measured
We timed every successful compile on LetX in the 30 days to 27 September 2026, 29,572 of them, from the moment our server received the request to the moment the PDF was ready. That includes the wait for a free worker, not only the LaTeX run. Loading the PDF into your browser adds a little on top.
| Share of compiles | Finished within |
|---|---|
| Half | 5.4 seconds |
| Three in four | 11.8 seconds |
| Nine in ten | 24.6 seconds |
The typical compile splits into about 2 seconds waiting for a worker and 3 seconds of LaTeX. The slow end is long documents, heavy TikZ and pgfplots figures, and the first compile of a project, which has nothing cached yet. We have not run a like-for-like benchmark against other editors, so we make no claim to be the fastest.
Compile LaTeX online now, free, no install.
Open LetX FreeFrequently asked questions
Can I compile LaTeX without installing anything?
Yes. With an online editor like LetX, the LaTeX toolchain runs on the server. You paste or upload your source, click Compile, and get a PDF in the browser. No TeX Live, MiKTeX, or MacTeX install needed.
Is online LaTeX compiling free?
Yes. LetX lets you compile LaTeX online for free, with unlimited projects and collaborators. No credit card is required to start.
How fast is online LaTeX compilation?
On LetX, typical documents compile to PDF in seconds using latexmk on dedicated cloud workers, with a live preview that updates as you edit.
Can I import an existing LaTeX project to compile online?
Yes. Upload a .zip of your project and LetX preserves the .tex files, images, .bib bibliography, and folder structure, then compiles it in the browser.
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Written by Shihab Shahriar Antor , AI Engineer & Founder of Shahriar Labs. Builder of LetX (collaborative LaTeX) and QuantumSketch (AI STEM video).