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compyimage.

Compress and convert images

Shrink JPG, PNG, and WebP file sizes in your browser without uploading your photos to a server.

Target format:
Mode:
Presets:

Drop an image, or click to browse

Supports JPG, PNG, WebP, AVIF, and HEIC up to 40MP. Processed 100% on your device.

Select images

How it works

Step 1

Drop image

Select, drag and drop, or paste your image directly into the workspace.

Step 2

Adjust quality

Choose your desired target quality or file size with instant preview.

Step 3

Download file

Save the optimized image directly to your device with zero upload latency.

Frequently asked questions

Does compressing an image reduce visual quality?

Modern lossy compression removes imperceptible pixel data to reduce file size drastically while maintaining sharp visual quality. You can also choose lossless mode for zero quality reduction.

Are my images uploaded to any server?

No. Every compression calculation runs completely inside your browser using WebAssembly. Your photos never leave your device.

Can I compress multiple images at once?

Yes. You can drop multiple images to compress them in batch and download them individually or as a single ZIP archive.

Related tools

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Phase 1

Convert Image

Convert between JPG, PNG, WebP, AVIF, and HEIC formats instantly on your device.

Phase 1

Resize Image

Change image dimensions by exact pixels, percentage, or social media aspect presets.

Phase 1

Crop Image

Trim unwanted outer areas or crop to standard aspect ratios (16:9, 4:3, 1:1).