Compress Image to Specific Size
Compress images to your exact desired file size (KB). Enter your target size and we'll handle the rest.
Compress to 100KB
Automatic compression to 100KB or less
Click here or drag & drop
Other sizes:
🎯 Why Use Our Target-Size Compressor?
Stop guessing with quality sliders. Simply type the exact file size you need — whether it is 50KB, 150KB, or 500KB — and our intelligent algorithm will iterate through compression levels in milliseconds to deliver the highest possible visual quality under your limit.
Your images are compressed entirely within your browser using client-side JavaScript. No files are ever uploaded to any external server, making this the safest way to compress confidential documents, personal photos, or proprietary business images.
Our compression engine uses an intelligent binary search approach to rapidly find the optimal quality setting that produces an output just below your target size. This means maximum visual fidelity within your exact size constraint — usually calculated in under two seconds.
⚙️ How to Compress to a Custom Size
Drag and drop your oversized image into the upload area, or click to browse. We accept JPG, PNG, and WebP files of any resolution.
Type your desired maximum file size in kilobytes using the input field. Our engine will calculate the best compression settings to hit that target while preserving as much detail as possible.
Review the compressed output with its exact final file size displayed. Click download to save the perfectly sized image to your device — guaranteed to be at or below your specified limit.
Meet Strict Upload Requirements
Government portals, university applications, job boards, and banking websites often impose strict file size limits — sometimes as low as 20KB or 50KB. Instead of repeatedly compressing and checking, our tool guarantees a single-pass result that meets any upload restriction you encounter, saving you frustration and wasted time.
Maximum Quality at Any Size
A common mistake when compressing is overshooting — setting quality too low and ending up with a 30KB file when the limit was 100KB. Our algorithm finds the sweet spot automatically, ensuring you get the maximum achievable visual quality at exactly the file size you specified. Every kilobyte of your budget is used to preserve image detail.
Works With All Image Formats
Whether you need to compress a high-resolution JPEG photograph from your camera, a detailed PNG screenshot with text overlays, or a modern WebP graphic for web publishing, our universal engine adapts its compression strategy to each format. The tool intelligently handles transparency in PNGs and applies format-specific optimizations for the best results.