OpenScreenShot

OpenScreenShot is ranked #7 of 76 in screenshot annotation software on The Geeks Club. It runs on Browser extension. There is a free plan.

OpenScreenShot plans and pricing

Free Free no account · no watermark · no cloud openscreenshot.app · 28 Sept 2026

Compared on screenshot annotation software

Free plan: Yes
Redaction tools: Yes
Measurement tools: No
Team collaboration: No
Browser extension: Yes
Export formats: PNG, JPEG, WebP, PDF

Best OpenScreenShot alternatives

9.1 Monosnap Free plan

8.7 Awesome Screenshot Free plan

8.6 Screenpresso Free plan

8.5 ShareX Free plan Open source

8.5 Greenshot Free plan

8.4 Markup Hero Free plan

OpenScreenShot

Free and Open Source: The tool is free, open source, and MIT licensed.
No Account Required: Users can capture screenshots without creating an account.
Works Offline: Capture, editing, export, PDF, and recording work locally, including with Wi-Fi off.
Supported Browsers: Screenshots work on Firefox, Chrome, Edge, Brave, Arc, and other Chromium browsers.
Recording Platform: Recording is available only in Chrome.
Capture Modes: Users can capture a full page, visible area, or a selected region.
Annotation Tools: The editor supports arrows, boxes, text, and blur.
Screen Recording: Recording includes auto zoom, timeline trimming, and WebM export.
Privacy Model: No account, upload, telemetry, watermark, or install-time host permissions are used.
Local Processing: All capture, annotation, and export processing runs locally in the browser.
Network Behavior: The extension makes no network request and uses no third-party services.
Permission Scope: The extension requests activeTab only for the tab and capture being used.
Recording Storage: Recordings are stored on the device in IndexedDB until exported or deleted.
CLI Tool: The optional npm CLI captures screenshots from a terminal and can run as an MCP server.
Price from: Free

Visit site Alternatives

Where it ranks on The Geeks Club

Best Screenshot Annotation Software in 2026#7 of 76

Is OpenScreenShot yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote OpenScreenShot

Sources

openscreenshot.app· checked 28 Sept 2026
openscreenshot.app/docs/· checked 28 Sept 2026
openscreenshot.app/blog/screenshot-cli/· checked 28 Sept 2026
openscreenshot.app/privacy/· checked 28 Sept 2026
openscreenshot.app/support/· checked 28 Sept 2026