Browser-native · Private · Free

Highlight Part of Image Online — Precise Callouts in Your Browser

Draw attention to the exact element that matters — labeled pin markers on a local canvas, with zero upload and instant export.

Mark a Region — 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

Expectation management

Pix-8 does not offer rectangular area highlights, spotlight masks, or blur-the-background tools. Image Annotator places labeled pin markers — a precise alternative when you need to draw attention to a UI element, tutorial step, or defect on a screenshot.

Why highlight screenshots in the browser?

Cloud markup tools copy your file to a remote server before you mark anything. Pix-8 keeps processing local — when you need to highlight part of image online, labeled callouts deliver clarity with better privacy and speed.

Client-side only

Screenshots of dashboards, mockups, and unreleased work stay on your device — never uploaded to a cloud server.

Mark up in seconds

No upload queue. Click to mark a region, type a short label, and share a flattened image without round-trip latency.

Precision over boxes

Pin callouts target one exact point with readable text — often clearer than a vague highlight rectangle on busy UI screenshots.

How it works

  1. Step 1

    Load your image

    Open the Image Annotator and upload a screenshot or photo — the file is read locally, with no server transfer.

  2. Step 2

    Mark the area

    Click the element you need to highlight, enter a short label describing that region, and drag the marker to fine-tune its position.

  3. Step 3

    Flatten and share

    Download or copy one image with every callout rendered in — ready for tickets, docs, or chat.

Frequently asked questions

Can I highlight a rectangular area or blur the rest of the image?

Not with Image Annotator. This tool places labeled pin markers on specific points — ideal for naming a button, flagging a defect, or numbering a tutorial step. For blur or vignette effects on the full image, use Pix-8 Image Filters. For free-positioned text blocks, use Text Overlay.

Is highlighting an image online private with Pix-8?

Yes. Every label is rendered on a client-side canvas in your browser. Your file is never uploaded to Pix-8 or any third-party server.

When is a labeled callout better than a highlight box?

On dense UI screenshots, a highlight rectangle often obscures the very detail you mean to show. A labeled marker names the element and points to the exact pixel — staying legible when the image is resized or pasted into Slack, Jira, or email.

Related use cases

Ready to highlight your screenshot?

Open the Image Annotator, place a labeled callout, and share a flattened image in under a minute — free, private, on your device.

Open Image Annotator

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