Resize Image to Target KB (20KB, 50KB, 100KB, 200KB)
Target an exact maximum file size in Kilobytes (KB). Our algorithm performs an iterative binary search across JPEG and WebP quantization tables to compress your image strictly under your target limit while preserving maximum visual clarity.
Upload photo to reduce to KB
Strict compliance for exam portals, jobs, and government forms.
How to use Resize to KB in 4 simple steps
Fast, private, and runs entirely in your local browser memory.
Choose your picture
Drop your passport photo, document scan, or certificate image.
Enter target size in KB
Pick a popular preset (20 KB, 50 KB, 100 KB, 200 KB) or type any custom limit.
Run binary quantization
Our engine computes optimal quality steps until the file size ceiling is satisfied.
Download compliant image
Verify the before/after byte count and save your ready-to-upload file.
Key features & capabilities
Popular form & document presets
Frequently asked questions
How does the target KB algorithm guarantee the limit?
It conducts binary search quantization testing across compression matrices. If the target size cannot be met by quality reduction alone, it intelligently scales down pixel dimensions incrementally to guarantee the output is strictly below your target ceiling.
Why do online forms demand 20 KB or 50 KB?
Official recruitment gateways (such as SSC, UPSC, NADRA, and state boards) manage millions of applications and enforce strict server storage caps through automated validation filters.
Does this work for scanned signatures?
Yes. Upload your signature image, choose 20 KB, and the tool will deliver an ultra-sharp, high-contrast signature file.