Does compressing an image reduce its quality?

At moderate compression levels (quality 70-85), the difference is virtually invisible to the human eye. Our tool lets you preview the result before downloading so you can find the perfect balance between size and quality.

What is the difference between lossy and lossless compression?

Lossy compression permanently removes some data to achieve smaller files. Lossless compression reduces size without any data loss but typically achieves less reduction. JPEG uses lossy compression, while PNG supports lossless compression by default.

Are my images uploaded to a server?

No. All compression happens directly in your browser using client-side processing. Your images never leave your device, ensuring complete privacy.

What is the maximum file size I can compress?

You can compress images up to 50 MB in size. For best performance with very large files, we recommend using a modern browser like Chrome or Firefox.

Can I compress multiple images at once?

Yes, you can upload and compress up to 20 images in a single batch. Each image is processed independently so you can set different quality levels if needed.

How much can I reduce the file size?

Typical reductions range from 40% to 80% depending on the original image and your quality setting. PNG images with many flat colors often see the greatest savings.

Will compression change the dimensions of my image?

No. Compression only reduces file size — the width and height of your image remain unchanged. If you also want to resize, use our Resize Image tool.

Compress Image

Reduce image file size without losing visible quality. Supports JPG, PNG, WebP, and more.

Drag & drop images to compress

or click to browse

jpg

jpeg

png

webp

Max file size: 50 MB | Up to 20 files

How to Use Compress Image

Upload Your Image

Drag and drop your image or click to browse. Supports JPG, PNG, WebP, and AVIF files up to 50 MB.

Adjust Quality

Use the quality slider to set your desired compression level. Preview the result in real time before saving.

Download Compressed Image

Click Download to save your optimized image. The file size reduction is displayed so you can see exactly how much space you saved.

About Compress Image

Compressing images is one of the most essential tasks for anyone who works with digital media. Whether you run a blog, manage an e-commerce store, or simply want to save storage space on your phone, reducing image file sizes can make a dramatic difference in performance, load times, and bandwidth costs.

PicTools' Compress Image tool uses advanced lossy and lossless compression algorithms to shrink your photos and graphics while preserving the visual quality that matters. Unlike many online compressors that apply a one-size-fits-all approach, our tool lets you choose your target quality level so you stay in full control of the trade-off between file size and clarity.

Frequently Asked Questions

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