Image

Image Resizer & Compressor

Resize and compress images locally for uploads and faster pages. Processing stays on your device.

How to Use

  1. Upload an image.
  2. Set max width/height or scale percent and output quality.
  3. Download the resized file and compare before/after size.

Key Features & Privacy Advantage

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Max dimension and percentage modes.
  • JPEG/WebP quality controls.
  • Before/after byte size readout.

Technical Breakdown

Upload limits and Core Web Vitals both reward smaller images. This tool scales via canvas drawImage, then re-encodes with quality settings for JPEG or WebP when available.

We preserve aspect ratio when you set a max edge. Extreme upscaling cannot invent detail; downscaling is the common path for web delivery.

All work stays on-device — useful for client proofs and personal photo pipelines.

Frequently Asked Questions

Will quality drop?

Downscaling and lossy re-encoding can soften detail. Use higher quality for important photos.

Are images uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

What formats can I export?

JPEG and WebP when the browser supports encoding; PNG remains available as a lossless option.

Is there a size limit?

Very large megapixel files may hit memory limits. Try a smaller max dimension.