Arrowbox

Spec sheet

Purpose

Arrowbox is a free browser-based image markup tool for annotating and redacting screenshots and other images.Read 11 Oct 2026 · arrowbox.app

Free plan

YesRead 20 Sep 2026 · arrowbox.app

Privacy

The page says it makes zero network calls after loading and that images and projects are not uploaded.Read 11 Oct 2026 · arrowbox.app

Support

The maker welcomes enquiries and bug reports at [email protected].Read 11 Oct 2026 · arrowbox.app

Accounts and telemetry

The maker says Arrowbox requires no account or sign-up and has no telemetry or watermark.Read 11 Oct 2026 · arrowbox.app

Annotation tools

Its tools include arrows, callouts, text, shapes, highlighting, freehand drawing, and numbered step stamps.Read 11 Oct 2026 · arrowbox.app

Browser extension

NoRead 20 Sep 2026 · arrowbox.app

Browser support

The maker says desktop browsers work best, recommends Chrome or Edge, and says mobile is not good yet.Read 11 Oct 2026 · arrowbox.app

Export formats

It exports flattened PNG, JPEG, or PDF files and can copy a flattened image to the clipboard.Read 11 Oct 2026 · arrowbox.app

Funding

Arrowbox is donation-supported, with PayPal donation buttons on the page.Read 11 Oct 2026 · arrowbox.app

Multiple images

A board can hold multiple images for composition into one export.Read 11 Oct 2026 · arrowbox.app

Offline use

The page can be saved as an HTML-only file and used offline from a local device.Read 11 Oct 2026 · arrowbox.app

Redaction

Redaction can pixelate, blur, or cover image areas with solid black.Read 11 Oct 2026 · arrowbox.app

Redaction limitation

Saved JSON projects retain the original image with editable redactions, so the maker advises sharing exports rather than project files.Read 11 Oct 2026 · arrowbox.app

Plans and prices

Every Arrowbox plan and price →

Where Specifiction places it

• Screenshot Annotation Software#68 of 767.3