Does my image get uploaded to any server or cloud storage?

No. The image is processed entirely within your device's browser memory using the HTML5 Canvas API. No server ever receives, stores, or inspects your photos.

Which image formats are supported?

You can upload and compress JPG, PNG, and WebP images. You can also cross-convert between these formats with one click.

How does the Auto-Fit Target KB feature work?

Our engine runs an in-memory binary search across canvas compression quantization levels, converging on the highest visual fidelity that remains strictly below your chosen KB threshold.

Is there a limit on how many images I can process?

Because processing utilizes your own device's CPU and GPU resources rather than remote server queues, you can process unlimited images completely free.

Toolzia All-in-One Online Tools

⚡ 100% In-Browser Execution 🔒 Zero Server Uploads Image & Photo Tools

Image Resizer & Target KB Compressor

Resize, crop, and compress JPG, PNG, and WebP images to exact target KB limits directly in your browser. 100% client-side with zero server uploads.

Drag & Drop your photo here, or browse

Supports JPG, PNG, WEBP, and GIF up to 50MB. Processed 100% locally.

Dimensions

Width (px)

Height (px)

Quality

Output Format

Target KB Presets

Auto-adjusts quality slider to target file size:

Original

Processed Result

Zero server uploads. Saved directly from browser RAM.

100% Client-Side Privacy Guarantee

Unlike conventional online tools that transmit your files to cloud servers, this tool executes 100% locally inside your browser via WebAssembly, HTML5 Canvas, and Web Workers. Your sensitive documents, photos, and financial inputs never leave your computer or phone.