LaTeXdiff Online by TheLatexLab

Latexdiff Online by TheLaTeXLab is a free browser-based tool to compare two LaTeX files or full LaTeX projects and generate a clean diff with tracked changes. Paste your original and revised .tex file of upload full project .zip file then generate the diff file. It is built for researchers, students, and academic writers who use LaTeX but do not want to deal with Perl installation, command line setup, or configuring local environments just to run `latexdiff`. Most existing workflows require installing TeX utilities, running terminal commands, and fixing environment issues before you can even compare files. TheLaTeXLab removes all that friction. You can simply upload or paste your `.tex` files in the browser and instantly generate a visual diff showing additions, deletions, and modifications. The tool works well for journal revisions, co-author collaboration, thesis updates, and paper resubmissions where tracking changes between LaTeX versions is important. It supports real LaTeX workflows while keeping the experience simple and fast. No installation. No terminal. No setup. Just upload your files and compare LaTeX documents online.