Most LaTeX utilities online assume you've already solved the hard part: a working TeX install, the right packages, a toolchain that compiles. For the moments when you just need to do one thing - turn a .tex file into a PDF, get a Word version a co-author can comment on, check that your citations aren't hallucinated - that's a lot of overhead.
So we built a small suite of single-purpose LaTeX tools that run entirely in your browser against a hosted backend. No account, no install, no setup. Open the page, drop in a file, get your result. Here's the whole set.
What's there
LaTeX → PDF - Upload a .tex file and get a compiled PDF back, via pdfLaTeX or XeLaTeX. The fast path when you don't have a local TeX install handy.
LaTeX → Word - Convert a .tex paper into a standard double-spaced Word manuscript. Useful when a journal or a co-author insists on .docx.
Word → LaTeX - The reverse trip. Upload a .docx and get a .tex starting point via Pandoc - headings, lists, tables, bold, and italic all carry over.
LaTeX Diff - Upload two versions of a document and get a tracked-changes comparison PDF, so you can see exactly what moved between revisions.
BibTeX Validator - Check a bibliography for missing required fields, dead DOIs, and AI-hallucinated citations. If you've been pasting references out of a chatbot, this catches the ones that don't actually exist.
BibTeX Builder - Paste a list of DOIs or arXiv IDs and download a ready-to-use .bib file, with the entries fetched and formatted for you.
Equation Renderer - Paste LaTeX math and download a high-resolution PNG - handy for slides, posters, or anywhere you can't compile LaTeX directly.
Nothing is stored
Every file you upload is processed in memory in an ephemeral container and discarded the moment your download is ready. Nothing is written to durable storage, and nothing is logged. Unpublished manuscripts stay yours - that constraint shaped how the backend was built, not something bolted on afterward.
Why we made them
These grew out of the same work behind ModernTex, our native macOS LaTeX editor. The editor is the full workflow; these tools are the small, sharp pieces you sometimes need on their own - including when you're not at your own Mac. They're free, and they'll stay free.
Try them out at purplelink.llc/tools. If they save you some time and you'd like to help keep them online, there's a coffee link on each one.