Reduce Image Size
Reduce image file size to a specific KB value automatically.
Frequently Asked Questions
How do I reduce a photo to under 20 KB or 50 KB for online applications?
Upload your photo, type your target KB (e.g., "50" or "20"), and click Compress. PDFtiny uses iterative compression to reach the exact target file size without visible blur.
Does reducing KB size change the pixel dimensions of my photo?
By default, it reduces file size via smart JPEG quantization while keeping pixel dimensions unchanged. If the target KB is extremely low, optional dimension scaling is available.
Can I reduce PNG file size in KB?
Yes, PNG images can be optimized losslessly or converted to high-efficiency WebP/JPEG to meet strict KB caps.
Can I batch reduce multiple photos to the same KB threshold?
Yes, process multiple photos and ensure all files meet your portal's maximum upload threshold simultaneously.