Compress Image to 200 KB
Compress JPG, PNG or WebP images to under 200 KB online for free.
How to use / 使用步骤
- Upload one or more images.上传一张或多张图片。
- The tool automatically trial-compresses toward a 200 KB target — no manual quality tuning needed.工具会自动以 200KB 为目标反复试压，无需手动调质量。
- Download the results; each shows its final size.下载结果，每张都会标出压缩后的实际大小。
About Compress Image to 200 KB / 关于本工具
A 200 KB limit shows up constantly: forum avatars and attachments, job-application portals, school and government upload forms, and email systems that reject anything larger. Hitting it by hand is tedious — you export, check the size, it's 240 KB, you lower quality, try again. This tool does that loop for you using a binary search: it compresses at a mid quality, measures the result, then raises or lowers quality and repeats until it lands just under 200 KB. You get the largest, sharpest image that still fits the cap.
200KB 的上限随处可见：论坛头像与附件、求职投递系统、学校和政务上传表单，以及拒收过大附件的邮箱。手动卡这个值很烦——导出、看大小是 240KB、降质量、再试。本工具用二分搜索替你跑完这个循环：先以中等质量压一版、测体积，再上调或下调质量重复，直到刚好压到 200KB 以内。你得到的是仍然能塞进上限的、最大最清晰的那一版。
A note on PNG / 关于 PNG
PNG has no quality dial, so to reach a strict byte target the engine progressively shrinks the dimensions instead. If your image is a photo, converting to JPEG usually hits 200 KB at a much higher resolution — worth choosing when transparency isn't required.
PNG 没有质量参数，为达到严格的体积目标，引擎会改为逐级缩小尺寸。如果是照片，转成 JPEG 通常能在高得多的分辨率下达到 200KB——在不需要透明背景时值得选用。