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🖼️ 图片工具Image Tools (第 6 页)(page 6)

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手写签名提取(去白底透明)Signature Extractor (Transparent Background)

把纸上手写签名的照片变成透明背景的 PNG:自动去掉白纸和阴影,可调节阈值、改成黑色或蓝色墨迹、自动裁掉空白,生成的电子签名可直接放进 Word、PDF 或合同。Turn a photo of a handwritten signature into a transparent PNG: paper and shadows are removed automatically, you can tune the threshold, recolour the ink black or blue and auto-crop the margins — ready for Word, PDF or contracts.

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格子纸生成器(方格/田字格/米字格/横线/点阵)Grid Paper Generator

生成可打印的练习纸:方格纸、坐标纸、田字格、米字格、横线纸、点阵纸和英语四线三格,可设置格子大小、线条颜色和纸张尺寸,下载矢量 PDF 或高清 PNG 直接打印。Make printable practice paper: square grid, graph paper, Chinese tian/mi character grids, lined, dot grid and English handwriting lines.

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WBMP 图片转换(PNG/JPG ⇄ WBMP)WBMP Converter (PNG/JPG ⇄ WBMP)

把 PNG、JPG 等图片转换成 WAP 时代的 WBMP 黑白位图(可选阈值或抖动),也能打开 .wbmp 文件预览并转回 PNG,常用于老式功能机、单片机和点阵屏开发。Convert PNG, JPG and other images to the 1-bit WBMP format from the WAP era (threshold or dithering), or open .wbmp files to preview and convert them back to PNG — handy for feature phones, microcontrollers and dot-matrix displays.

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CSS 雪碧图生成器CSS Sprite Generator

把多个小图标合并成一张雪碧图(CSS Sprite),自动生成每个图标的 background-position 样式类,可选择横排、竖排或网格排列和间距,支持 2 倍图(Retina),下载 PNG 和 CSS。Merge many small icons into one CSS sprite sheet and get a class with background-position for each icon.

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AI 智能抠图(一键去除背景)AI Background Remover

上传图片自动识别主体并去除背景,人像、商品、动物都能抠;可换成透明、纯色或自定义背景图,支持边缘羽化、收缩扩张和画笔手动修补,批量处理后打包下载。Remove image backgrounds automatically with on-device AI — people, products and pets.

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证件照换底色(蓝底 / 红底 / 白底)ID Photo Background Colour Changer

一键把证件照换成蓝底、红底、白底或渐变底:AI 自动识别人像,头发边缘自然,保持原照片像素尺寸,可设置 DPI 和文件大小上限,支持批量换底打包下载。Change an ID photo background to blue, red, white or a gradient in one click.

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图片压缩到指定大小(KB)Compress Image to Size (KB)

把照片压缩到指定 KB 以内,例如 20 KB、50 KB、100 KB、200 KB,适合考试报名、社保、签证、简历等网站上传;可同时设置最小大小和像素尺寸(如 295×413),自动寻找最佳画质,批量压缩打包下载,图片不上传。Compress photos to a target size such as 20, 50, 100 or 200 KB for exam, visa and job-application uploads.

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修改图片 DPI(分辨率)Change Image DPI

在线修改 JPG、PNG 图片的 DPI(如 72 改成 300、350),只改写图片里记录的分辨率信息,不重新压缩,画质和像素完全不变;可批量修改,并附 DPI 与打印尺寸换算。Change the DPI of JPG and PNG images (e.g.

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截图拼长图(自动去重叠)Long Screenshot Stitcher

把多张聊天记录、网页、文章截图拼成一张长图,自动识别相邻截图的重叠部分并去掉,可去除重复的状态栏、标题栏和底部输入栏,支持手动微调裁剪、超长分段导出。Stitch chat, web-page and article screenshots into one long image.

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台词拼图(电影字幕截图拼接)Movie Subtitle Screenshot Stitcher

把电影、电视剧、视频截图拼成经典台词长图:第一张保留完整画面,后面的截图只保留底部字幕条,可调字幕条高度和位置、加分隔线,一键导出,截图只在本机处理。Turn movie and TV screenshots into a classic subtitle collage: the first frame stays whole and each following shot keeps only its subtitle strip.

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长图切割(切成多张 / 朋友圈九图)Long Image Splitter

把长截图、长海报、长文章图切成多张:按比例(3:4、9:16 等)、按张数或按固定高度切割,智能避开文字在空白处下刀,最后一张可补齐,适合发朋友圈、小红书、微博,打包下载,图片不上传。Split long screenshots, posters and article images into several pieces — by aspect ratio (3:4, 9:16…), by count or by fixed height.

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照片转素描(铅笔画 / 线稿)Photo to Sketch (Pencil Drawing & Line Art)

一键把照片变成铅笔素描、彩铅画、线稿或炭笔画,可调笔触粗细、浓淡、细节和纸张纹理,原图对比查看,导出高清 PNG / JPG,照片只在浏览器本地处理。Turn photos into pencil sketches, coloured-pencil drawings, line art or charcoal with adjustable stroke, darkness, detail and paper texture.

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在线手写签名(生成透明签名图片)Online Signature Maker

用鼠标、手指或手写笔在线手写签名,笔迹粗细随速度和压感自然变化,自动裁掉空白,导出透明背景 PNG 或 SVG 矢量签名,可复制粘贴到 Word、PDF 和电子合同中。Draw your signature with a mouse, finger or stylus — natural stroke width from speed and pressure, automatic trimming, and export as a transparent PNG or SVG to paste into Word, PDFs or e-contracts.

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身份证复印件生成(正反面合成一张 A4)ID Card Copy Maker (Front & Back on One A4)

把身份证正反面照片合成在一张 A4 纸上,按 85.6×54 mm 原尺寸排版(300 DPI),可框选裁剪、旋转、转黑白复印效果,并加“仅供××使用”防盗用水印,导出 PDF / JPG 或直接打印;也支持银行卡、驾驶证、护照页。Put the front and back of an ID card on one A4 page at true 85.6×54 mm size (300 DPI).

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名片制作(在线名片设计生成器)Business Card Maker

免费在线名片制作:填写姓名、职位、公司和联系方式,6 款模板任选,可上传 Logo、换主题色,背面自动生成扫码存通讯录的二维码;支持 90×54 mm 国内标准、美式、欧式、日式尺寸,导出 300 DPI PNG、带出血的印刷 PDF 和 A4 十连排版。Free online business card maker: enter your name, title, company and contacts, choose from 6 templates, add a logo and colour, and get a scan-to-save-contact QR code on the back.

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文字头像生成器(姓名头像 / 姓氏头像)Text Avatar Generator

输入姓氏、名字或英文缩写,一键生成圆形、圆角或方形的文字头像,可选背景色、渐变、字体(黑体/宋体/楷体)、竖排和白色描边,导出 256–1024 像素 PNG,还能批量输入名单打包下载,适合微信、钉钉、企业通讯录和群聊头像。Type a surname, name or initials to make a circle, rounded or square text avatar with background colour, gradient, font, vertical layout and ring; export PNG at 256–1024 px or batch-generate a whole name list as a ZIP — for chat apps, team directories and group icons.

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证件照排版打印(6 寸相纸排版)ID Photo Print Layout

把一张证件照自动排版到 6 寸(4R)、5 寸、7 寸相纸或 A4 纸上:1 寸、小 1 寸、大 1 寸、2 寸、小 2 寸(护照)、签证等常用尺寸,自动排满或指定张数,支持 1 寸×8 + 2 寸×2 混排、裁切线和白边,导出 300 DPI 的 JPG/PDF,拿去照相馆冲印或在家打印。Lay out an ID photo on 6" (4R), 5", 7" photo paper or A4: common sizes such as 1-inch, 2-inch, passport and visa photos, fill the sheet or set a count, mixed 1-inch ×8 + 2-inch ×2, cut lines and white borders, exported as 300 DPI JPG or PDF for a photo lab or home printer.

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LaTeX 公式转 SVG / PNG 图片LaTeX Formula to SVG / PNG

输入 LaTeX 数学公式,用本地 MathJax 渲染并导出纯矢量 SVG 或指定 DPI(150–1200)的高清 PNG,支持透明背景、自定义颜色和字号、行内/独立公式,支持 amsmath、矩阵、\color、\cancel、化学式 \ce 等,适合放进 PPT、Word、海报和网页。Type a LaTeX formula, render it locally with MathJax and export pure-vector SVG or high-resolution PNG at 150–1200 DPI, with transparent background, custom colour and size, inline or display style; supports amsmath, matrices, \color, \cancel and \ce chemistry — for slides, Word, posters and the web.

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论文多图拼版(自动加 a/b/c 标签,按期刊尺寸与 DPI 导出)Figure Panel Composer (a/b/c Labels, Journal Width & DPI)

把多张子图拼成论文用的组图:按列数自动排版(每行等高或等大格子),自动添加 a、b、c / A、B、C / (a)(b)(c) 标签(字号以 pt 计、可加粗),按 Nature、Cell、IEEE、Elsevier 的单栏/双栏宽度或自定义毫米宽度和 300/600/1000 DPI 导出 PNG、JPG 或 TIFF,并提示分辨率不足的子图。Combine sub-figures into one publication figure: automatic layout by columns (equal row height or equal cells), a/b/c, A/B/C or (a)(b)(c) labels in points (bold optional), and export PNG, JPG or TIFF at Nature, Cell, IEEE or Elsevier single/double-column widths (or custom mm) and 300/600/1000 DPI, with warnings for sub-figures lacking resolution.

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GIF 动图缩放(改尺寸)GIF Resizer

在浏览器里修改 GIF 动图的宽高:可锁定比例或按 25%/50%/75%/200% 缩放,逐帧解码重新编码并保留每帧延时和透明度,可同时调整播放速度和颜色数,处理前后对比尺寸和文件大小,适合做表情包、头像和论坛签名。Resize animated GIFs in your browser: lock the ratio or scale by 25/50/75/200%, with every frame decoded and re-encoded keeping delays and transparency.

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App 图标生成器(iOS / Android / PWA)App Icon Generator — iOS, Android & PWA

上传一张 1024×1024 的图标原图,一键生成 iOS/iPadOS/macOS 的 AppIcon.appiconset(含 Contents.json,可直接拖进 Xcode)、Android 各密度 mipmap 和圆形图标、Google Play 512 图标、PWA 192/512 与 maskable 图标、favicon 和 apple-touch-icon,可设背景色和内边距,打包成 ZIP 下载。Upload one 1024×1024 artwork and get a full set: iOS/iPadOS/macOS AppIcon.appiconset with Contents.json (drop straight into Xcode), Android mipmaps and round icons for every density, the 512 Play Store icon, PWA 192/512 and maskable icons, favicons and apple-touch-icon — with background colour and padding, all in one ZIP.

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证件照尺寸规格大全(一寸 / 二寸 / 签证)ID Photo Size Chart — 1-inch, 2-inch, Visas

汇总一寸、小一寸、大一寸、二寸、小二寸,身份证、社保卡、护照、驾驶证,美国、申根、英国、日本等签证,以及教资、公务员、考研、四六级报名照的毫米尺寸、像素和底色要求,可搜索筛选,并直接跳转证件照制作和排版打印。Sizes in mm and pixels plus background colours for 1-inch, 2-inch and their variants, Chinese ID card, social security card, passport and driving licence, US, Schengen, UK and Japan visas, and common exam registration photos — searchable, with links to the ID photo maker and print layout.

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邮箱地址转图片(防爬虫采集)Email Address to Image (Anti-Spam)

把邮箱地址、电话或任意联系方式生成清晰的 PNG 或 SVG 图片:可选字体、字号、文字和背景颜色、透明背景,并可加噪点让 OCR 更难识别;支持复制带 alt 说明的 <img> 代码,放到网页、论坛签名或简历中,减少被爬虫抓取后收到的垃圾邮件。Turn an email address, phone number or any contact detail into a crisp PNG or SVG — choose font, size, colours and transparency, optionally add noise to frustrate OCR, and copy an <img> tag with a safe alt text for web pages, forum signatures or CVs to cut spam from harvesting bots.