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.

Private by design — images are processed locally in your browser whenever the tool supports client-side processing, so your files do not leave your device.

Frequently Asked Questions

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.
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.
Is it free? Any watermarks?
Image Toolkit is completely free and never adds watermarks.

Related image tools

Image CompressorCompress to 50KBCompress to 200KBPNG CompressorImage ResizerImage Crop