Drop an image here
JPEG or PNG — stays in your browser, never uploaded to any server
Binary-search iterates quality & auto-downscales dimensions if needed.
Free Online Image Compressor
Reduce any JPEG or PNG to 50 KB — or any size you choose — directly in your browser. No uploads, no account, no watermarks. 100% free forever.
Drop an image here
JPEG or PNG — stays in your browser, never uploaded to any server
Binary-search iterates quality & auto-downscales dimensions if needed.
Compro is a free, browser-based image compression tool that reduces JPEG and PNG file sizes without quality loss — instantly, privately, with no uploads required.
Set 50 KB as the target and Compro automatically finds the perfect quality level. Ideal for passport photos, ID uploads, job applications and government forms that require images under 50 KB.
Unlike other online image compressors, Compro never sends your files to any server. All compression happens inside your browser using the HTML5 Canvas API. Your images are yours alone.
Most compressors just apply a fixed quality. Compro uses a binary-search loop to find the highest possible quality that still hits your target size — giving you the best-looking result every time.
Set exact pixel dimensions and lock your aspect ratio — all before compressing. Fewer pixels means smaller file sizes without extra quality loss.
Fully responsive and touch-friendly. Compress images directly from your iPhone, Android phone or tablet. Install as a PWA for one-tap access and offline use — no app store needed.
No file size limits, no daily quotas, no watermarks, no account required. Compro is completely free for unlimited use. Compress as many images as you need, whenever you need.
Reduce your image file size in four simple steps — no software to install, no account to create.
Everything you need to know about compressing images online.