Compare an approved document with a new export. Inspect missing amounts, changed layouts and lost pages, then download a report you can share.
选择自己的两份 PDF，检查内容与版式变化。文件留在浏览器内，无需账号。
Local comparison. No PDF upload or server storage.
Try your own PDFs above, or inspect this four-page example: charts, 20 invoice rows, bilingual controls and a landscape schedule.
Every status and pixel count below is computed by Printguard. Open a report to inspect original pages, differences, precise masks and text evidence.
明细表丢失金额与唯一编号
One of 20 invoice lines loses its reference and $13,680 charge. Other rows, running totals and the three surrounding pages survive.
Page 2: find the blank reference and amount. The required-text failure links to the baseline row.
Open comparison report只更新时间，正确通过
The generation date changes inside the same text item as the approved total. The rest of the four-page packet stays identical.
Page 1: enable mask bounds and use the overlay. The nearby $148,320 total remains visible and under test.
Open comparison report日期遮罩不会放过相邻金额
The date changes again, but the total on that same line becomes $148,920. The exact same date rule must reject this export.
Page 1: compare the unmasked amount, then switch to Difference to locate the changed digits.
Open comparison report字体、行高和分页发生连锁变化
Invoice rows use a wider serif font and taller spacing. The ledger spills onto a new page, shifting the bilingual appendix and landscape schedule.
Start on page 2, then inspect pages 3–5. Original sizes are preserved and the last page is reported as added.
Open comparison report横向交付计划整页丢失
The executive summary, invoice ledger and bilingual appendix remain identical. The final schedule and KPI acceptance table disappear.
Page 4: the baseline schedule is present; the actual side clearly says the page is missing.
Open comparison reportOne baseline includes the dense content and mixed page layouts that make export regressions easy to overlook.
The same engine runs in Node, the command line and Playwright. Reports keep the original document images and can be opened as standalone files.
import { expect } from 'printguard/playwright';
await expect(await download.path()).toMatchPdf('baseline.pdf', {
requiredText: ['OPS-26-0917'],
textMasks: [{
pattern: '\\b\\d{4}-\\d{2}-\\d{2}\\b',
label: 'Generated date'
}]
});