[Showcase] Annotate PDFs in the side panel and let Gemini fix the LaTeX

Hey everyone,

If you use Antigravity 2.0 to write papers or documentation, you know the annoying part is the review cycle: compiling LaTeX, tabbing out to a viewer, spotting an issue, and then trying to explain in chat where the typo, broken formula, or misaligned table is.

I put together a plugin called PDF Reviewer to streamline that exact feedback loop:

  1. You ask Gemini to write or edit your LaTeX. The background compiler (pdflatex, latexmk, etc.) updates the PDF, which refreshes automatically in the right-hand side panel.
  2. You review the output visually. Directly on the rendered PDF, you highlight an awkward sentence or box a broken table and type a comment (e.g., “rephrase this”, “table is overflowing the margin”, “check equation 3”).
  3. Gemini fixes the source directly. Instead of copying text back into chat, you just tell Gemini: “address the annotations on page 2”. Gemini uses the bundled MCP server to read your comments and coordinates straight off the PDF, edits the .tex files, and the panel re-renders the corrected output.

It keeps the entire authoring, visual review, and agent fix cycle in one window without context switching.

Fair warning: it is heavily vibe coded, but it works really well for my daily writing workflow. Community contributions—whether authored by humans or AI agents—are highly appreciated.

Repo: GitHub - axiomfab/pdf-reviewer: Live PDF reviewer & annotator plugin for Antigravity 2.0 with auto hot-reloading and MCP tools · GitHub