#annotation

PDF Studio

ZelalemJembreYalew

Review, annotate, fill forms, comment on, search, and navigate PDFs directly inside VS Code.

Add annotations, highlights and comments to Markdown documents

PaperScholar

jianyong-w

AI-powered academic paper reader — PDF viewing, AI chat, notes, and code linking in VSCode

PDF Phoenix

harshankur

PDF viewer and annotator for VS Code. Save highlights and notes into the file, on a self-updating Mozilla pdf.js engine. Allows customizing the default viewer settings.

annotron — Markdown preview, Mermaid diagrams & point-and-click review

hueanmy

Preview Markdown & HTML with Mermaid diagrams (flowchart, sequence, class, ER, C4, gantt), outline navigation, and point-and-click review. A human-in-the-loop layer for AI coding agents (Claude Code, Cursor): comment on any element or text, auto-apply feedback via the integrated agent loop, sync edi

SightRead

WaylongLeon

A reading lens for code: highlight, fold and dim to read in place; AI signposts and route-finding to navigate the codebase.

Markback

DanDriscoll

Review Markdown like a doc — comment on the preview (and any file) with feedback saved to a plain-text .mb sidecar that diffs in git.

Copilot Hyperlink

BearNecessities

Open GitHub Copilot Chat with a pre-filled message and file attachments via a vscode:// URL — deep-link from any browser, script, or web app.

Tlcsdm Git Blame Info

unknowIfGuestInDream

Display git blame information in the editor gutter with color-coded annotations, inspired by Eclipse EGit

SwiftBox: YOLO Bounding Box Editor

RealAbdulrahmanAlabed

Open an image, drag/resize colored boxes, pick class from a dropdown, add multiple boxes, crop/rotate, swipe prev/next. All coords saved to one labels.json. Fast, no GPU.

Highlight custom keywords in any file with configurable colors

Snippet Highlighter

mihirshah07

Highlight code with colors like a real highlighter pen — yellow, green, blue, pink, orange, red. Persistent highlights with a toolbar sidebar, eraser, and keyboard shortcuts.