1. Overview

Edited values, per-field confirmations, memos, review status, and the document you were viewing are saved in the browser. They stay in place after a refresh or a later visit.

Connected at rollout: uploading new documents and reading their text — the extracted values on this screen are results prepared in advance for each document, and no real AI is connected; it is connected at rollout. Accounting software integration and server storage for sharing results across devices are also connected at rollout. Rule checks, value edits, confirmation, saving, and downloads actually work on the screen.

2. Challenges

1. A misread value can still look right.

Misread a single number (12 → 120) and the table still looks fine. With the source alongside and the fields that don't add up pointed out first, a person finds errors fast.

2. Values not in the source must not be made up.

A field with no date in the source, such as a quote's "유효기간 30일" (valid for 30 days), should be left blank, or, if a person calculated and entered it, that should stay marked.

3. A record of who confirmed it is needed before it goes into the ledger.

Review is complete only when a person has confirmed every field, and completed documents are locked so they can't be changed by mistake.

3. Structure

Source and extracted values sit side by side on one screen. Pick a document from the tabs at the top; the source on the left and the review fields on the right are linked. On mobile, "View source / Review values" buttons switch between the two.

4. Key Features

Rule Checks

It calculates and marks whether quantity × unit price = amount for each item, item total = supply amount, VAT = 10% of supply amount, and supply amount + VAT = total amount. On the purchase order, it flags the line where quantity was read as 120: "quantity × unit price = 1,140,000, but the amount is 114,000".

Source Location Highlight

Tap "Source location" on any field and the spot in the source where that value appears is highlighted in yellow. If an edited value can't be found in the source, it says "The same value was not found in the source."

Checks That Follow Your Edits

Edit a quote's supply amount and the expected VAT and total update at once. A validity period not in the source is marked "Not found"; if a person enters a date, that mark stays.

Completing Review and Downloading

The Complete Review button opens only after every field is confirmed, and completed documents lock their fields. Editing a confirmed field clears its confirmation. Download one document at a time or all completed documents as CSV, and reset to the original values or reopen a review.

6. QA

Results from running the pages on PC 1440 and mobile 390 screens and clicking through in the order a real user would. We also checked that data is still there after saving and refreshing. (2026-09-23)

The 13 function tests: first screen display · rule check — finding a quantity × unit price mismatch · source location highlight · editing a value and clearing the error · completion locked until every field is confirmed → review complete after confirming · review results kept after refresh · quote — chained total and VAT checks · saving a memo · editing clears that field's confirmation · this document's CSV · downloading all completed documents · resetting to the original extracted values · reopening a review

Speed and quality scores (out of 100; mobile measured three times on a slow connection, same result each time)

Mobile: First Contentful Paint 1.7s · Largest Contentful Paint 2.0s · Layout Shift 0.000 · Blocking Time 0ms PC: First Contentful Paint 0.4s · Largest Contentful Paint 0.4s · Layout Shift 0.000 · Blocking Time 0ms

7. Result