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Stitch images into one

Stack screenshots or photos into one long image, or side by side for comparison; unify width, set spacing, reorder.

图片在你的浏览器里拼接,不上传服务器

把要拼接的图片拖到这里,或点击选择

支持 JPG / PNG / WebP / GIF / BMP,可多选;添加后的顺序就是拼接顺序,可上下调整

拼接设置

提示:浏览器画布有尺寸上限,长图越长越容易触顶。竖向拼接时「统一宽度」会等比缩放每张图对齐宽度,高度按比例自动算出;若成品过高,可以先把图片用Image compression缩小,或减少张数、改用固定宽度较小的值。

图片拼接长图怎么用、什么场景最需要?

典型场景:微信聊天记录要留证或发给别人看,一张张截图发过去对方要划半天,拼成一张长图一次看完;多张订单截图、物流跟踪、转账凭证要提交给平台客服,很多客服系统只收一张图;几张发票照片要放进同一个报销附件;教程、菜谱、操作步骤按顺序拼成一张长图,读者从上往下滑即可;发朋友圈时长图比九宫格更完整,也不会有顺序错乱的问题。

竖向还是横向:竖向拼接(上下)是最常用的,聊天记录、订单、教程、文章都适合,产出的就是俗称的「长图」。横向拼接(左右)适合"前后对比":改图前后、方案 A 与方案 B、同一份表格的两半,左右并排一眼就能看出差异。

统一宽度解决什么问题:手机截图宽度一致,直接拼没问题;但如果你混用了手机截图、相机照片、网页截图,宽度可能从 750 到 4000 不等,直接拼会出现"有的宽有的窄、边缘参差"。本工具会按你选的统一宽度等比缩放每一张(高度同比变化,绝不变形),再用背景色填满剩余空隙,配合居中对齐,成品边缘整齐。

为什么要限制超长图:浏览器的画布(canvas)有尺寸上限,不同浏览器在宽或高超过约 16000 像素、或总像素过大时,要么画出空白、要么直接抛异常。与其让你导出一张全白的图还不知道哪里错了,本工具会先估算成品尺寸,一旦接近上限就明确提示并建议先压缩图片或减少张数——这是我们特意做的保护,不是限制你使用。

关于隐私:所有拼接都在你的浏览器里完成,图片不会被上传到任何服务器。聊天记录、订单、发票、凭证这类含个人信息的内容尤其需要这一点,你可以在浏览器开发者工具的 Network 面板核验整页没有任何文件上传请求。

FAQ

It says the result exceeds the browser canvas limit - what now?

Three moves: (1) lower the 'unified width' to 750 or 1080 (total height scales down proportionally); (2) shrink each image first with our image compression tool, then stitch; (3) use fewer images and split into two or three long outputs. Any 'force export' trick only ever gets you a blank image.

Will stitching stretch and distort my images?

No. This tool always scales proportionally to each image's original aspect ratio; narrower images are padded with the background color (white by default) - nothing is stretched or squashed to 'fill' the width. To get zero blank space, set the unified width to 'by the widest image' and choose center alignment.

How do I fix the order?

In the image list use up / down to move one at a time, 'top' / 'bottom' to jump, 'x' to delete, or just click 'reverse order' to flip the whole set - the fastest fix when a chat log got stitched upside-down.

PNG or JPG for output?

Screenshots and text-heavy long images: PNG - crisp text edges, at the cost of size. Photo content: JPG (around 90% quality) saves a lot. Note that long images have enormous pixel counts: even lossless PNG of ten-thousand-pixel height can run into tens of MB.

How many images at most?

No hard count limit; the real constraints are the output's total pixel budget and your machine's memory. Rule of thumb: at unified width 1080 and per-image height around 2000, two to three dozen stitch fine; to go beyond, lower the unified width.

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