FREEDOM251

Freedom251 › Screenshot Annotation Software

OpenScreenShot

Free plan Extension

Visit OpenScreenShot Alternatives Pricing

OpenScreenShot's own site

What OpenScreenShot is

OpenScreenShot is a free, open-source browser extension for capturing and editing webpage screenshots. It can save a full page, the visible area or a selected region, with exports in PNG, JPEG, WebP and PDF. Its editor offers arrows, boxes, text, blur, mosaic, opaque redaction, spotlight, crop, pen, highlighter and numbered step badges. Screenshots work on desktop Firefox, Chrome, Edge, Brave, Arc and other Chromium browsers. Screen recording is limited to Chrome and includes auto zoom, timeline trimming and WebM export. Capture, editing, export, PDF creation and recording are processed locally in the browser, including when Wi-Fi is off. The extension requires no account and uses no upload, telemetry, watermark or third-party services. An optional npm CLI captures pages through a locally installed Chrome-compatible browser and can save PNG output to a file or standard output. It can also run as an MCP server offering a screenshot capture tool for AI agent clients. The project is MIT licensed. Region selection is confined to the visible viewport, and pages that change height during capture or load images late may produce incomplete or blank results. Settings remain local to each device or profile.

Who it suits

OpenScreenShot suits people who need to capture, annotate and export webpages in a supported desktop browser without creating an account. Its Chrome-only recording and optional CLI or MCP server may also suit users capturing pages for documentation or agent workflows.

What it does well

  • Captures full pages, visible areas or selected regions
  • Exports PNG, JPEG, WebP and PDF
  • Annotation tools include blur and opaque redaction
  • Works locally, including with Wi-Fi off
  • No account, upload, telemetry, watermark or third-party service
  • MIT licensed and available at no charge

What to know first

  • Recording is available only in Chrome
  • Region selection cannot extend below the visible viewport
  • Pages that grow or load images late may be captured incompletely
  • Settings do not sync between devices or profiles

Limits

The free plan is listed as free and requires no sign-up. Region selection is viewport-only; recording works only in Chrome, and pages that change height or load images late may be incomplete or blank.

Plans

PlanBilled and limitsPrice
Freeno account · no watermark · no cloudFree

As openscreenshot.app lists them, read 28 Sept 2026. The maker's own page has the final word.

Getting started

  1. Visit the OpenScreenShot website.
  2. Add the browser extension to a supported desktop browser.
  3. Capture a full page, the visible area or a region in the viewport.
  4. Annotate the capture and export it as PNG, JPEG, WebP or PDF.
  5. For recording, use Chrome; optionally use the npm CLI with a locally installed Chrome-compatible browser.

Verdict

Choose OpenScreenShot for local webpage capture, annotation and export across its supported desktop browsers. Consider its limits if you need recording outside Chrome, region selection below the fold or settings synced across devices.

Questions

How much does OpenScreenShot cost?

The Free plan costs nothing and requires no sign-up.

Which browsers can capture screenshots?

Screenshot capture works on desktop Firefox, Chrome, Edge, Brave, Arc and other Chromium browsers.

Which browsers can record?

Screen recording is available only in Chrome.

What export formats are supported?

The extension exports PNG, JPEG, WebP and PDF. Recording can be exported as WebM.

Is OpenScreenShot open source?

Yes. It is open source under the MIT license.

Does it require an account or internet connection?

No account is required, and capture, editing, export, PDF creation and recording work locally, including with Wi-Fi off.

Facts from OpenScreenShot's own pages

Annotation
Its editor supports arrows, rectangles, text, blur, mosaic, opaque redaction, spotlight, crop, pen, highlighter, and numbered step badges. · openscreenshot.app, 28 Sept 2026
Annotation Tools
The editor supports arrows, boxes, text, and blur. · openscreenshot.app, 28 Sept 2026
Browser extension
Yes · openscreenshot.app, 24 Sept 2026
Browser support
Screenshots work on desktop Firefox, Chrome, Edge, Brave, Arc, and other Chromium browsers, while recording is Chrome-only. · openscreenshot.app, 28 Sept 2026
Chrome Capture Limit
Chrome limits captureVisibleTab to about two calls per second. · openscreenshot.app, 28 Sept 2026
Capture limitation
Region selection is viewport-only, so a region cannot extend below the fold during selection. · openscreenshot.app, 28 Sept 2026
Capture Modes
Users can capture a full page, visible area, or a selected region. · openscreenshot.app, 28 Sept 2026
CLI
The separate openscreenshot CLI captures webpages from a locally installed Chrome-compatible browser and can write PNG output to a file or stdout. · openscreenshot.app, 28 Sept 2026
CLI Tool
The optional npm CLI captures screenshots from a terminal and can run as an MCP server. · openscreenshot.app, 28 Sept 2026
Company Identity
OpenScreenShot is associated with @PGHQdev and OpenTechCheck. · openscreenshot.app, 28 Sept 2026
Core function
OpenScreenShot captures full webpages, visible areas, or selected regions from a browser. · openscreenshot.app, 28 Sept 2026
DevOps and CI/CD
The maker positions the CLI for incident reports, runbooks, postmortems, documentation, release notes, and visual diffs in CI/CD pipelines. · openscreenshot.app, 28 Sept 2026
Dynamic-page limitation
The capture engine measures page height once, so pages that grow during scrolling or load images late may be incomplete or blank. · openscreenshot.app, 28 Sept 2026
Export formats
The editor exports PNG, JPEG, WebP, and PDF files. · openscreenshot.app, 28 Sept 2026
Free and Open Source
The tool is free, open source, and MIT licensed. · openscreenshot.app, 28 Sept 2026
Free plan
Yes · openscreenshot.app, 24 Sept 2026
License
OpenScreenShot is open source under the MIT license. · openscreenshot.app, 28 Sept 2026
Local Processing
All capture, annotation, and export processing runs locally in the browser. · openscreenshot.app, 28 Sept 2026
MCP Integration
The MCP server provides a capture_screenshot tool for AI agent clients. · openscreenshot.app, 28 Sept 2026
Measurement tools
No · openscreenshot.app, 24 Sept 2026
Network Behavior
The extension makes no network request and uses no third-party services. · openscreenshot.app, 28 Sept 2026
No Account Required
Users can capture screenshots without creating an account. · openscreenshot.app, 28 Sept 2026
Works Offline
Capture, editing, export, PDF, and recording work locally, including with Wi-Fi off. · openscreenshot.app, 28 Sept 2026
PDF Export
PDF export uses a built-in writer and the browser's CompressionStream without network requests. · openscreenshot.app, 28 Sept 2026

Where OpenScreenShot stands on Freedom251

Look at these too