Fine-tune your GIF animations with the GIF Contrast Changer. Upload a GIF, adjust the settings to your preference, and download the modified version. All processing runs entirely in your browser — your files are never uploaded to any server.
将GIF拖放到此处或点击上传
支持动画和静态GIF文件
About
色彩平淡的GIF通常只需要提高对比度就能变得鲜明。反过来，对比度过高的GIF会显得生硬并丢失阴影细节。这个工具提供滑块来增减所有帧的对比度，帮你获得想要的视觉风格。
Features
单个滑块增减对比度——所有帧统一生效
实时预览让你在下载前看到效果
不影响帧时序、分辨率或透明度
完全客户端处理，保护文件隐私
Guide
上传你要调整的GIF
向右滑动对比度滑块让颜色更鲜艳，向左滑动柔化色调范围
预览动画确认所有帧效果良好
下载调整后的GIF
Pro Tips
小幅提升对比度（10-15%）就能让平淡的GIF明显更锐利而不过度处理
降低对比度适合营造复古、褪色的风格
最佳效果是先调对比度再微调亮度——这个顺序可以避免色彩剪切
FAQ
Upload your GIF and configure the settings. The tool processes everything in your browser using JavaScript, so your files stay private and the result is ready to download instantly.
Yes. All processing happens locally in your browser. Your GIF files are never sent to any server, ensuring complete privacy.
There is no hard limit. Processing speed depends on your device — most modern browsers handle GIFs up to 30–50 MB without issues.
Related
在上方上传你的GIF即可开始。只需几秒钟，完全免费，文件始终留在你的浏览器中。