图片工具100% 纯前端本地处理
在线图片压缩工具 (PNG, JPG, WebP)
在本地浏览器中将 JPEG、PNG 和 WebP 图片体积缩减高达 85%。纯前端 Canvas 处理，绝不上传云端，即时显示节省空间。
将图片拖拽至此处，或点击浏览选择
支持 PNG、JPEG、JPG、WebP（单张最大 25 MB）
3步极简操作指南
使用操作指南
简单 3 步，即可实现完美排版、精确把控动态折叠线并引爆内容传播。
上传或拖拽图片
直接拖拽 PNG、JPG 或 WebP 图片至上传区（单张最大支持 25MB）。
调节质量滑块
按需调整压缩比例（推荐设置为 80%，完美平衡高清视网膜显示与体积）。
一键高速下载
实时对比节省体积，单张保存或一键批量下载轻量化图片包。
专为高转化点击率与高留存打造
为什么在社交媒体发帖前必须压缩图片？
Heavy image files slow down page loading speeds, cause social media feeds to buffer, and eat up user bandwidth. Major social networks (like LinkedIn, X/Twitter, and Instagram) apply aggressive server-side compression algorithms to oversized uploads, which often ruins photo sharpness and degrades typography in graphics.
PreviewYourPost's 100% client-side compressor uses HTML5 Canvas and browser-native re-encoding to compress your PNG, JPEG, and WebP images directly on your machine. By maintaining complete control over image quality and resolution before uploading, your posts look crisp, professional, and load instantly across all devices.
探索更多免费效率小工具
100% 免费常见疑问
常见问题解答
针对技术实现、排版规范与数据隐私的权权威答疑。
Unlike traditional online compressors that upload your photos to external cloud servers, PreviewYourPost processes every image 100% locally inside your web browser using HTML5 Canvas and WebAssembly. Your photos, screenshots, and proprietary graphics never leave your device.
Standard photographs and heavy PNG screenshots typically see a 60% to 85% reduction in file size at the recommended 80% quality setting without any noticeable loss in visual clarity or sharpness on retina screens.
You can compress PNG, JPEG, JPG, and WebP files. When compressing PNG images with solid backgrounds, converting to JPEG or WebP unlocks massive byte savings while preserving crisp edge detail.
Large, unoptimized images cause mobile feed buffering, slower post loading times, and lower engagement. Furthermore, platforms like X (Twitter) and LinkedIn enforce strict upload thresholds (5MB to 10MB) and apply harsh server-side recompression if original files are too heavy.
Yes! You can drop up to 20 images at once (up to 25 MB per file). Each image is compressed in parallel, and you can download them individually or all at once.
We recommend setting the quality slider between 75% and 85%. This preserves crisp text readability in infographic carousels and vibrant color reproduction while keeping files lightweight.
100% 免费 · 无需注册 · 浏览器本地保护
发布前预览社交动态 全平台真实展示效果
专为创作者与增长团队打造的免费预览工作室。在正式发布前，真实模拟动态在 LinkedIn、Instagram、X 和 Threads 上的排版与截断。