100% Privacy Safe
Your images never leave your device. All compression happens locally in your browser via WebAssembly. No upload risks.
Settings
Recommended. Auto converts PNG to AVIF/WebP, reducing size by 50%-80%.
Compression Target
Strength 75%
Min Size Best Quality
Max Dimensions (W/H)
Output Format
Drag images here, or click to upload
Supports JPG, PNG, WebP, AVIF • Secure Client-side
Image Toolkit
Compress Image to 100KB
Supports Specific File Size and Batch Zip Download.
Supports JPG, PNG, WebP, AVIF. 100% Browser-based processing, absolutely secure.
Compress images to around 100KB with browser-side target size compression. Works for common photo formats and batch downloads.
100KB form upload workflow
- The page starts with 100KB selected for forms and profile image limits.
- Keep smart conversion enabled for smaller WebP or AVIF output when supported.
- Use the preview and file size comparison before downloading.
Specific Target Size
Precise control. Enter your desired KB size (e.g., 50KB), and the algorithm automatically adjusts quality to match.
Batch Processing
Drag and drop dozens of images at once. Once processed, download all images as a single ZIP archive.
AVIF / WebP
Export next-gen formats. AVIF reduces size by 50%-80% compared to JPG at the same quality.
Support
Frequently Asked Questions
01 How to compress to a specific size (e.g., 50KB)? +
In the settings panel, switch to "Target Size" mode, then enter your desired value (e.g., 50). The tool uses binary search to find the best quality that fits your size.
02 Is batch compression supported? Any limits? +
Fully supported. You can drag dozens of images at once. There are no artificial limits (only depends on your device memory). Use the Download ZIP button to save them all.
03 Is it free? Any watermarks? +
Image Toolkit is completely free and never adds watermarks.