Translate LaTeX Files Online - Formulas & Commands Preserved

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Translation
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Formatting preserved .TEX, .BIB, .STY, .CLS

Translation example

A LaTeX paper, English to Spanish: the source before and after

A short paper with sections, inline and display math, an aligned pair of equations, cross-references, citations, a custom \keyterm command, a table, a figure and a bibliography. The prose is translated; every command, formula and reference is checked against the original. No screenshot on purpose: the claim is about the source, so the source is what is shown.

Source paper.tex 
\section{Method}
\label{sec:method}
Depth was recorded at eleven fixed stations at low water. The accumulation rate
follows from the advection--diffusion balance,
\begin{equation}
\label{eq:balance}
\frac{\partial c}{\partial t} + u \frac{\partial c}{\partial x}
  = D \frac{\partial^{2} c}{\partial x^{2}} - \lambda c ,
\end{equation}
where $c$ is suspended concentration, $u$ the depth-averaged velocity and $D$
the dispersion coefficient. Integrating Equation~\eqref{eq:balance} over a tidal
cycle gives
\[
  a = \frac{1}{T}\int_{0}^{T} w_{s}\, c(x_{0},t)\, \mathrm{d}t ,
\]
with $w_{s}$ the settling velocity. For the two-station comparison we use
\begin{align}
  a_{1} &= \alpha\, u^{2} + \beta, \label{eq:a1}\\
  a_{2} &= \alpha\, u^{2} + \beta + \gamma \Delta h. \label{eq:a2}
\end{align}
Download this file
Result paper-es.tex 
\section{Método}
\label{sec:method}
La profundidad se registró en once estaciones fijas durante la marea baja. La tasa de acumulación se deduce del equilibrio de advección-difusión,
\begin{equation}
\label{eq:balance}
\frac{\partial c}{\partial t} + u \frac{\partial c}{\partial x}
  = D \frac{\partial^{2} c}{\partial x^{2}} - \lambda c ,
\end{equation}
donde $c$ es la concentración en suspensión, $u$ la velocidad promediada en profundidad y $D$ el coeficiente de dispersión. Al integrar la ecuación \eqref{eq:balance} a lo largo de un ciclo de marea obtienes
\[
  a = \frac{1}{T}\int_{0}^{T} w_{s}\, c(x_{0},t)\, \mathrm{d}t ,
\]
con $w_{s}$ la velocidad de sedimentación. Para la comparación entre dos estaciones usamos
\begin{align}
  a_{1} &= \alpha\, u^{2} + \beta, \label{eq:a1}\\
  a_{2} &= \alpha\, u^{2} + \beta + \gamma \Delta h. \label{eq:a2}
\end{align}
Download this file

  • Every command kept, none added

    The multiset of \commands is identical before and after.

  • Math byte for byte

    Each inline formula and each equation / align block is identical to its source.

  • References and labels unchanged

    Same \ref, \eqref, \cite keys and \label names, in the same order.

  • Headings translated

    Introduction → Introducción, Method → Método, Results → Resultados, Conclusion → Conclusión

  • Technical terms

    In the abstract the model rendered “advection model” as “modelo de convección”, which is a different physical process. Pin such terms with a glossary before you publish.

  • Compiled with LaTeX

    The build host has no TeX installation, so the result was compared command by command but not compiled.

  • Bibliography file

    references.bib is a separate file and is not translated; the \bibliography line points to it unchanged.

2026-10-08 verified — Amanda Lee

LaTeX features

Formula Preservation

Math mode content ($...$, equation, align) is never translated or modified. Your formulas compile exactly as in the original.

Command & Reference Safety

All \commands, \label{}, \ref{}, \cite{}, and BibTeX references are preserved. Cross-references stay valid.

Academic & Thesis Ready

Cloud-based AI handles multi-chapter theses and conference papers.

100+ Languages Supported

Translate LaTeX files between 100+ languages including Spanish, French, German, Arabic, Chinese, Japanese, and Korean.

Why ForgeFile Is the Best LaTeX Translator Online

Need to translate a LaTeX document without breaking formulas, commands, or BibTeX references? ForgeFile is an AI-powered LaTeX translator that converts your academic papers, theses, and technical documents into 100+ languages while preserving every formula, \command, environment, and citation reference. Whether it's a journal submission, a conference paper, or a PhD thesis, your translated LaTeX compiles without errors.

How ForgeFile Translates LaTeX Files

Our translation engine understands LaTeX syntax natively. When you translate a .tex file, ForgeFile:

  • Identifies and protects all \commands, environments (\begin{}...\end{}), and math mode ($...$, \[...\])
  • Translates only prose text - abstracts, paragraphs, captions, and section titles
  • Preserves all \label{}, \ref{}, \cite{}, and BibTeX cross-references

The result is a valid .tex file that compiles with pdflatex, xelatex, or lualatex - no broken commands, no missing references.

Full LaTeX Feature Support

Unlike generic text translators, ForgeFile handles LaTeX semantics:

  • Math formulas ($inline$, $$display$$, \[...\], equation, align) never translated
  • All \commands and their arguments preserved exactly
  • Environments (\begin{theorem}...\end{theorem}) handled correctly
  • \label{}, \ref{}, \cite{}, and \bibliography{} references kept intact
  • Tables, figures, and caption text translated with formatting preserved

Built for Researchers, Students & Academic Publishers

ForgeFile handles the LaTeX documents academics work with:

  • Journal Papers - translate articles for international journals and conferences (IEEE, ACM, Springer, Elsevier)
  • PhD Theses & Dissertations - localize dissertations for multilingual requirements
  • Textbooks & Course Materials - translate educational content for international students
  • Technical Reports - localize research reports, proposals, and grant documentation

Batch upload is available for multi-chapter documents. All files are encrypted in transit and at rest - fully GDPR-compliant.

Why Researchers Choose ForgeFile for LaTeX Translation

  • Formula-Safe Translation - math mode content is never touched or translated
  • Command & Reference Safety - \commands, \label, \ref, \cite all preserved
  • 100+ Languages - including right-to-left scripts (Arabic, Hebrew) and CJK characters
  • Babel/Polyglossia Support - language packages referenced correctly in preamble
  • No Software to Install - works entirely in your browser

For the LaTeX typesetting system itself, see the LaTeX Project.

How to Translate a LaTeX File in 4 Steps

  1. 1

    Upload Your LaTeX File

    Drag and drop your .tex file. We support documents from Overleaf, TeXstudio, and any LaTeX editor.

  2. 2

    Select Source & Target Language

    Choose from 100+ languages. ForgeFile understands academic writing style and scientific terminology.

  3. 3

    Configure Translation Settings

    Choose whether to translate caption text, section titles, and abstract separately. Select preamble handling options.

  4. 4

    Download Your Translated LaTeX

    Compile the translated .tex file with pdflatex, xelatex, or lualatex - all commands, citations, and formulas are preserved.

LaTeX Translation FAQ - Common Questions Answered

How do I translate a LaTeX file online?

Upload your .tex file to ForgeFile, select your target language, and click Translate. Our AI translates prose text while preserving all formulas, commands, and references.

Are math formulas translated?

No. ForgeFile detects all math mode content ($...$, $$...$$, \[...\], equation, align, etc.) and leaves it completely untouched.

Are \label, \ref, and \cite references preserved?

Yes. ForgeFile preserves all cross-reference commands including \label{}, \ref{}, \cite{}, \bibliography{}, and BibTeX entries.

Does the translated file compile?

Yes. ForgeFile produces valid .tex files that compile with pdflatex, xelatex, or lualatex without errors.

Can I translate Overleaf projects?

Yes. Export your .tex file from Overleaf, translate it with ForgeFile, and import the translated version back into a new Overleaf project.

Are custom commands and environments preserved?

Yes. ForgeFile preserves all \newcommand, \renewcommand definitions and custom environments defined in your preamble or style files.

Is my LaTeX file secure during translation?

Files are encrypted in transit and at rest. How long they are kept depends on your plan.

Does ForgeFile handle multi-chapter documents?

Yes. You can translate individual .tex files or upload a ZIP archive containing the main file and all \input/\include chapter files.

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