使用教程：给证件与图片加水印、打码并批量导出Guide: watermark, mask and batch-export your documents
下面按最常见的两个任务讲解：① 给身份证 / 银行卡加用途水印并打码；② 给普通图片加平铺水印防盗。手机端与电脑端按钮一致，只是面板位置不同。Two jobs are covered: ① stamp a purpose watermark and mask an ID / bank card; ② tile a watermark over ordinary photos. Phones and desktops share the same buttons - only the panel position differs.
任务一：身份证加水印 + 打码导出Task 1: watermark an ID card and export it
打开「图片加水印」Open the photo watermark tool
依次上传身份证正面、反面两张图片（也可以一次多选）。上传后每张图会出现在图片轨道上，点击可切换当前编辑对象。Add the front and then the back (multi-select works too). Each file appears in the thumbnail rail; tap one to edit it.
裁剪证件范围Crop the card
点「裁剪」后按比例框选证件范围（可选 1:1、4:3 等预设比例），拖动四角微调；扫描歪了可先用旋转 / 镜像按钮转正。Tap Crop and frame the card to the ratio you need (try 1:1, 4:3…), drag the corners to fine-tune; rotate or flip first if the scan is crooked.
加用途水印Add the purpose watermark
在「用途水印模板」里选一条（如「仅供办理手机卡使用」），文字会自动填入，可再手动加上日期。字号建议一行 6–10 个字，透明度 30–45%，旋转 -30°，排布选「平铺」，然后点「应用到全部」。Pick a preset such as “For SIM application only”, append a date if needed. Aim for 6–10 characters per line, 30–45% opacity, -30° rotation, Tiled placement, then press “Apply to all”.
打码敏感信息（可选）Mask sensitive data (optional)
点工具条的「涂抹画笔」，在图片上涂住身份证号后 6 位、住址门牌等；效果可选像素马赛克、模糊或纯色遮盖。涂抹是破坏性操作，点「应用」前可随时清除重来。Switch on the brush and paint over the last digits, street address and similar. Choose mosaic, blur or solid cover; press Apply when it looks right, or clear and start over.
批量导出Batch-export
点「导出 PDF」（推荐，尺寸最稳）或导出 PNG / JPG / WebP，也可一键打包 ZIP；多张证件会合成一个文件，之后可自带去打印店打印。Export a PDF (most reliable), PNG / JPG / WebP, or a ZIP of all files; multiple documents combine into one file you can take to a print shop.
任务二：给普通图片加平铺防盗水印Task 2: tile an anti-theft watermark over photos
单个工具页Single-image page
「图片加水印」→ 添加图层 → 文字：写「© 你的名字 禁止转载」，排布选「平铺」，用密度 4×4 或隔行错位；透明度 20–35% 让画面仍然清楚，但裁剪不掉。再点「添加图层」放 Logo 或二维码，导出 PNG。On “Watermark”: add a text layer such as “© You · All rights reserved”, choose Tiled with 4×4 density and alternate-row offset, keep opacity 20–35% so the photo stays clear but uncroppable. Add another layer for a logo or QR, then export PNG.
批量模式Batch mode
「批量模式」一次拖入几十张，字号按每张图片宽度等比缩放，横竖图混排也协调；逐张预览后一键打包 ZIP，或合并导出成一个 PDF。Drop dozens of images into batch mode; the font scales with each image width so portrait and landscape mix well. Preview, then grab a ZIP or one merged PDF.
常用快捷键与手机端差异Shortcuts and phone differences
| 操作Action | 电脑Desktop | 手机Mobile |
|---|---|---|
| 上传图片Upload | Ctrl+V 或拖拽or drag | 点上传区选相册Tap the upload area |
| 撤销 / 重做Undo / redo | Ctrl+Z / Ctrl+Y | 工具条按钮Toolbar buttons |
| 导出Export | Ctrl+S | 面板底部「下载」“Download” at the panel foot |
| 缩放预览Zoom | + - 0 | 缩放按钮，页面可双指滚动Zoom buttons; two-finger page scroll |
| 涂抹打码Paint masking | 按住拖动Drag | 手指涂抹，画笔需先开启Finger paint, brush must be on |
| 面板位置Panel | 右侧固定Right column | 画布下方堆叠Stacked under the canvas |