On-device · No upload · Client-side canvas

Client-Side Image Editor — Private Screenshot Markup

Mark up screenshots entirely on your device — labeled pin callouts on a local browser canvas, with zero server upload and no cloud processing.

Edit Locally — Free

No server · No account · 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

Client-side markup, not a cloud creative suite

Image Annotator runs on a client-side canvas in your browser — your file never leaves the machine. It places labeled pin markers, not filters, crop tools, layers, or retouching brushes. For screenshot feedback and handoffs, callouts with text labels are the fast, private alternative to uploading images to a cloud editor.

Why choose a client-side image editor?

Cloud editors copy your file to a remote server before you touch a pixel. Pix-8 processes everything on-device — the core advantage of a client-side image editor that keeps screenshot markup local, fast, and private.

Zero server exposure

Every operation runs on a client-side canvas in your browser. Screenshots, mockups, and sensitive assets never touch a cloud server.

No upload latency

Skip the round-trip. Click to place a callout, edit labels in the Inspector, and flatten one exportable image in seconds.

Privacy by architecture

Client-side processing is not a setting — it is how the tool works. Your file is read locally and stays on your device through export.

How it works

  1. Step 1

    Load on your device

    Open Image Annotator in your browser and load a screenshot — the file is read locally via the File API, with no server transfer.

  2. Step 2

    Mark up client-side

    Click to place labeled pin markers, type short labels, and drag to reposition — all rendered on the on-device canvas.

  3. Step 3

    Export locally

    Flatten and download or copy one image with all callouts baked in — share without ever uploading the source file.

Frequently asked questions

What is a client-side image editor?

A client-side image editor processes your file entirely on your device — in Pix-8's case, in the browser on a local canvas. Image Annotator places labeled pin markers on screenshots for feedback and tutorials. It does not include filters, cropping, layers, retouching, or full creative editing. For free-positioned text blocks, use Pix-8 Text Overlay.

Does client-side mean my images are never uploaded?

Yes. Your file is read locally via the browser File API and all markup runs on-device. It is never transmitted to Pix-8 or any third-party server — the defining privacy property of a true client-side image editor for screenshot markup.

How is this different from a cloud image editor?

Cloud editors upload your image before any edit. Pix-8 keeps every pixel on your machine, flattens labeled callouts into one shareable image, and exports in seconds — free, with no account and no server round-trip.

Related use cases

Ready to edit screenshots client-side?

Open the Image Annotator, place your first labeled callout, and export a flattened image — processed entirely on your device.

Open Image Annotator

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