Save Space

Compress Images Online (Reduce File Size in KB/MB)

Reduce image file sizes dramatically while maintaining visual quality. Adjust the quality slider and choose between JPEG and WebP output formats for optimal compression.

Everything runs in your browser using HTML5 Canvas. Your images are never uploaded to any server, ensuring complete privacy. Need to alter pixel width or height instead? Use our Image Resizer.

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100% PrivateZero Server Uploads

100% Client-Side Processing & Privacy Guarantee

All processing takes place strictly inside your client browser using WebAssembly, Canvas, and Web Workers. Your files, documents, and data never leave your device and are never sent to external servers.

Zero Uploads

100% Safe

Instant Speed

Zero Latency

Technical Specifications & Browser Capabilities

Local runtime details and instant zero-server processing environment

Compression Engine

HTML5 Canvas 2D & Native WebP/JPEG Lossy Compression

Supported Inputs

JPG, JPEG, PNG, WebP, BMP (up to 50MB per file)

Output Formats

Optimized JPEG, Modern WebP

Target Metric

File Size Reduction in Kilobytes (KB) & Megabytes (MB)

Pixel Integrity

100% Dimension Preservation (Width & Height remain untouched)

Execution & Privacy

100% Client-Side In-Memory Canvas Encoding (Zero Cloud Uploads)

Step-by-Step Instructions

1. Set Quality & Format

Adjust the quality slider (10-100%) and select your preferred output format before uploading.

2. Upload Your Image

Drag and drop any common image format (JPG, PNG, WebP, BMP) into the upload area.

3. Review & Download

See the compression percentage saved and download the optimised image.

Core Advantages & Features

Real-Time Compression Stats

Instantly see original size, compressed size, and the exact percentage of space saved.

Adjustable Quality Control

Fine-tune compression from 10% to 100% quality to find your ideal balance.

Multiple Output Formats

Choose between JPEG (maximum compatibility) and WebP (modern, smaller files).

Complete Privacy

Files are compressed entirely in your browser's memory. No server ever sees your images.

Frequently Asked Questions

How much can I reduce file size?

Typical savings are 50-80% for photographs at 75-85% quality. The exact reduction depends on the image content and chosen quality level.

Does compression change the image dimensions (width & height)?

No. Image compression optimizes color data and encoding to reduce file size in KB or MB, leaving pixel dimensions identical. If you need to change pixel width and height, use our Image Resizer tool.

Which format produces smaller files?

WebP generally produces 25-35% smaller files than JPEG at equivalent quality, but JPEG is more universally compatible.

Are my images uploaded to an external server?

Never. All compression processing is carried out entirely within your browser using HTML5 Canvas APIs, ensuring absolute confidentiality.

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Compress Images Online (Reduce File Size in KB/MB)

Reduce image file sizes dramatically while maintaining visual quality. Adjust the quality slider and choose between JPEG and WebP output formats for optimal compression.

Everything runs in your browser using HTML5 Canvas. Your images are never uploaded to any server, ensuring complete privacy. Need to alter pixel width or height instead? Use our Image Resizer.