Client-side · No upload · Built for design handoffs

Screenshot Annotation Tool for Designers — Local Mockup Callouts

Mark design handoffs with labeled pin callouts on a local canvas — name elements, flag spacing issues, and export shareable screenshots without uploading client work.

Annotate a Screenshot — Free

No account · No server · Instant export

What this tool does

  • Click-to-place labeled pin markers
  • Drag markers to reposition on the canvas
  • Edit tag labels in the Inspector panel
  • Flatten and download or copy to clipboard
  • Optional EXIF metadata stripping before export

Built for design handoffs, not illustration

Image Annotator places labeled pin markers — not freehand arrows, vector shapes, or Figma-style drawing. For the jobs designers actually need on static screenshots (handoff notes, review feedback, stakeholder markup), callouts with text labels are faster to place and stay legible when pasted into Slack, email, or tickets.

Why designers annotate screenshots locally

Cloud markup tools upload your mockup before you mark a single pixel. Pix-8 keeps processing on-device — the right model when you need a screenshot annotation tool for designers who share client work without exposing files to a server.

Client work stays local

Mockups, wireframes, and unreleased UI never leave your device before markup — no cloud upload before you place a callout.

Handoff-ready in seconds

Click to place a callout, type a component or layer note, and flatten one PNG for Slack, Figma comments, or email.

Readable in design review

Text labels on pin markers stay sharp in threads and tickets — clearer than freehand scribbles on dense interface screenshots.

How it works

  1. Step 1

    Open your screenshot

    Drop a PNG, JPEG, or WebP into Image Annotator — the file loads locally via the browser File API.

  2. Step 2

    Label the element

    Click the control or area under review, add a short label (component name, spacing note, revision number), and drag the marker to the exact pixel.

  3. Step 3

    Share the handoff

    Flatten and download or copy one image with all callouts baked in — paste into a design review, ticket, or stakeholder thread.

Frequently asked questions

Is this screenshot annotation tool built for designer workflows?

Yes — for naming UI elements, flagging spacing or alignment issues, numbering review steps, and clarifying handoff notes on static screenshots. Image Annotator places labeled pin markers. It does not include freehand drawing, arrows, shape tools, layers, or Figma-style collaborative editing.

Are design screenshots uploaded when I annotate them?

No. All markup runs on a client-side canvas in your browser. Your file is read locally and is never transmitted to Pix-8 or any third-party server — important when mockups contain client branding, unreleased product UI, or confidential layouts.

How is this different from annotating inside Figma or a design tool?

Design tools are built for editable files and often require cloud accounts. Pix-8 flattens labeled callouts into a single portable screenshot anyone can open — fast, free, fully local, and ideal when you need a screenshot annotation tool for designers who share feedback outside the source file.

Related use cases

Ready to annotate your next design screenshot?

Open the Image Annotator, label your first element, and share a flattened handoff image — privately, on your device.

Open Image Annotator

Client-side canvas only — your image never leaves the browser.