Compress Image to Specific KB

Reduce your image file size to an exact target size in kilobytes. Perfect for meeting file size requirements.

Upload and Compress

Select an image and choose your target file size

Exact Size Control

Our algorithm compresses images to match your target size exactly using binary search optimization.

100% Private

All processing happens in your browser. Your images never leave your device.

Fast & Free

Client-side processing means instant results with no upload time. Completely free to use.

Compress Image to Exact KB - Free Online Tool

Need to compress an image to meet specific file size requirements? Our free online image compressor lets you reduce image file sizes to exact kilobyte targets like 50KB, 100KB, or 200KB. Perfect for passport photos, visa applications, online forms, and website optimization.

How to Compress Image to Specific KB

  1. Upload your image (JPG, PNG, WebP, or HEIC format)
  2. Select your target file size from presets (5KB to 2MB)
  3. Click "Compress Image" and wait a few seconds
  4. Download your compressed image that matches the exact size

Why Use This Image Compressor?

  • Exact Size Matching: Our binary search algorithm compresses images to match your target KB exactly (±2KB tolerance)
  • No Upload Required: All compression happens in your browser - your images never leave your device
  • Unlimited Use: Compress as many images as you need, no signup or limits
  • All Formats Supported: Works with JPEG, PNG, WebP, HEIC, and more
  • Quality Preservation: Maintains image quality while reducing file size

Common Use Cases

  • Passport Photos: Most applications require photos under 50KB or 100KB
  • Visa Applications: Embassy websites often have strict file size limits
  • Online Forms: Government and job application portals limit upload sizes
  • Email Attachments: Reduce file sizes to send multiple images via email
  • Website Optimization: Compress images to 200KB or less for faster loading

Popular Target Sizes

50KB: Passport photos, ID cards
100KB: Visa applications, resumes
200KB: Profile pictures, documents

Frequently Asked Questions

How does exact KB compression work?

Our tool uses a binary search algorithm that adjusts image quality until the file size matches your target. It typically takes 10-15 iterations to find the perfect compression level, completing in 1-3 seconds.

Will compressing reduce image quality?

Yes, compression reduces quality slightly, but our algorithm finds the optimal balance to meet your size requirement while maintaining acceptable quality. For most use cases, the quality loss is minimal and not noticeable.

Is it safe to use?

Absolutely! All image processing happens in your browser using JavaScript. Your images are never uploaded to our servers, ensuring complete privacy and security.

What if my image is already smaller than the target?

If your image is already smaller than your target size, the tool will return the original image without modification. We won't artificially increase the file size.