No. 47 of 76 ·Screenshot Annotation Software

Snapmark

Windows · Mac · Linux · Extension

Freedom report

Three barsScore 6.2

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

Snapmark is ranked #47 of 76 in screenshot annotation software on Freedom251. It runs on Browser extension, Linux, macOS, Windows. There is a free plan.

Snapmark plans and pricing

All plans

Free Free Free, open source; VS Code extension snapmarkapp.netlify.app · 9 Oct 2026

Compared on screenshot annotation software

Free plan: Yes
Redaction tools: Yes
Measurement tools: No
Team collaboration: No
Browser extension: No
Export formats: Copies annotated images to clipboard; specific file export formats not stated

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The record

Purpose: Snapmark annotates screenshots before you paste them into AI chats.
Workflow: It runs from the VS Code clipboard workflow and does not interact with an AI agent’s window.
AI compatibility: The site lists Claude Code, GitHub Copilot, Cursor, OpenAI Codex, Gemini Code Assist, and Cline, and says it works with anything that accepts pasted images.
Annotations: It supports blur/redaction, numbered step callouts, pen, arrow, rectangle, ellipse, text, highlight, and crop tools.
Image resizing: It resizes screenshots to a 1920-pixel long edge when copying; the Marketplace says the maximum dimension can be set to 0 to preserve original size.
Input options: If the clipboard has no image, users can drag in an image file, paste one, or pick a file from their computer.
Privacy: The maker says Snapmark runs locally with no network calls, telemetry, or accounts, and only reads and writes the clipboard.
License: The project is MIT licensed and described as open source.
Operating systems: The Marketplace states macOS and Windows work as-is; Linux requires xclip for X11 or wl-clipboard for Wayland.
Supported workflow: The extension is used with VS Code and can paste annotated images into AI chats that accept pasted images.
Notable limit: The maker describes Snapmark as built for the single workflow of annotating screenshots for AI agents.
Price from: Free

Where it ranks on Freedom251

Best Screenshot Annotation Software in 2026#47 of 76

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Sources

snapmarkapp.netlify.app· checked 9 Oct 2026
marketplace.visualstudio.com/items· checked 9 Oct 2026
github.com/rajitha302/Snapmark· checked 9 Oct 2026