DCPIXEL
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Compress JPG to 500KB

Compress a JPG photo down to 500KB or less. Instant, browser-based — no upload, no account, no quality guesswork.

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1. Upload Image

2. Target Size

Custom target100 KB

Upload an image and set a target size in KB

DCPIXEL iteratively adjusts JPG quality with a binary search algorithm until your file lands at or under 500KB, keeping the best achievable visual quality for that size — processed entirely on your device.

常见问题解答

How accurate is the file size target?
The tool uses a binary search algorithm that iterates compression quality until the output is within 1-2KB of your target. Accuracy is typically within 1KB for JPG and WebP formats.
Can I compress to any custom KB value?
Yes. Besides the preset options (20KB, 50KB, 100KB, 200KB, 500KB), you can type any custom target value in the input field.
What formats support exact-size compression?
JPG and WebP support precise size targeting via quality adjustment. PNG uses lossless compression so file size cannot be controlled as precisely — we convert it to optimized JPG for exact-size output.
Why do government portals require images under 100KB?
Online application portals (visa applications, college forms, tax submissions) have upload limits to reduce server storage costs and bandwidth. Our tool compresses while maintaining the minimum quality required for official document submission.

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