Export Proof Download extension

A local export survey for canvas makers

Your canvas looked right.
Did the export?

Catch changed labels, clipped ink, and missing visible objects before your diagram, pixel canvas, or teaching visual leaves the browser.

Download for ChromeSee the three-minute check

Free single-page proofs · Chrome/Edge MV3 · No account

Two topographic map proofs side by side, with a red survey box marking a clipped shoreline on the export
Reference AExport B · 1 mark

Nothing uploadedImages remain inside your browser

Semantics + pixelsMaps visible labels before comparing

Evidence you can saveAnnotated PNG and JSON report

A short field procedure

Proof the file people will actually see.

Export Proof surveys the approved browser view first, then checks the distributed artifact against that map. It never edits your work.

  1. 01

    Fix the reference

    Open the exact canvas view you approved. The extension records visible text, accessible object names, bounds, and a screenshot of the largest canvas region.

  2. 02

    Pin the export

    Drop in a PNG, JPG, WebP, or PDF. The first PDF page is rendered locally; optional OCR only runs when your browser provides an on-device detector.

  3. 03

    Read the field notes

    Review numbered marks for frame drift, missing edge detail, changed object shapes, and ink that reaches the crop. Save the annotated proof with your release.

A report, not a mystery score

Every warning points back to a place.

The extension records what it compared, why a region was flagged, and how much visible edge detail survived. That makes review faster without pretending automation understands your drawing.

  • × Missing mapped text or object
  • △ Large local shape or ink change
  • ⌜ Crop or page ratio drift
82/100
Comparison completeReview 2 marked regions
12
  1. 1
    Text shape changed“Learning objective” retained 48% detail.
  2. 2
    Ink reaches export edgeInspect the crop for clipped strokes.

Private by construction

Your confidential whiteboard stays on your machine.

Reference captures, uploaded exports, comparison pixels, and free reports do not leave the extension. There are no analytics SDKs, remote fonts, or image-processing services.

OCR
Off by default and only offered through a supported local browser API.
Storage
One reference stays in extension storage until you replace it or remove the extension.
Permissions
Active-tab access only after you choose the toolbar action; no authentication bypass.
Read the privacy note →

Free when you publish alone

One proof is a product feature.
A release checklist is a team feature.

Team field pack

$39 one time

  • Compare up to 10 exports in one pass
  • Keep local proof history for handoff
  • Download a combined JSON summary
  • Free annotated PNG always included
Buy Team pack

Sociobot/Dodo is merchant of record. Refunds are handled there and revoke the license automatically. Terms apply.

Install in two minutes

Load the inspectable build folder.

  1. Download and unzip Export Proof.
  2. Open chrome://extensions and turn on Developer mode.
  3. Choose “Load unpacked” and select the unzipped folder.
Download Export Proof v1.0

Store distribution can be added later; this build is the inspectable MV3 package.