Free Online Image Compressor

Shrink any photo's file size by quality percentage with a live size estimate, or type an exact KB limit and let the tool hit it automatically - free, no signup, and it never leaves your device.

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Click or drag & drop an image
PNG, JPG, or WebP
Original: - Dimensions: -
Format
Quality80%
Estimated size: calculating...
PNG is lossless - quality has no effect on its file size. Switch to JPG or WebP for quality-based compression, or use Target Size mode to shrink a PNG by resizing.
Target Size
KB
We'll automatically reduce quality and, if needed, resolution to get under this size.

Result

Your compressed image will appear here
Two Ways to Compress
Dial in a quality percentage with a live size estimate, or type an exact KB target and let the tool hit it automatically.
Guaranteed Size Limits
Set a maximum file size in KB and the tool reduces quality and resolution as needed to get under it.
100% Private & Free
Compression happens entirely in your browser. No uploads, no tracking, no watermark, no signup.

How to Compress an Image Online for Free

  1. Upload your photo. Drag and drop or select a PNG, JPG, or WebP image.
  2. Choose Quality % or Target Size (KB). Pick the mode that fits what you need.
  3. Adjust the slider or type your size limit. Watch the estimated size update live, or let the tool calculate it for you.
  4. Download. Get your compressed image, guaranteed under your limit in Target Size mode.

Why Use This Free Image Compressor

Most online compressors only offer a vague "quality" slider with no idea what file size you'll end up with. This tool shows you a live size estimate as you adjust quality, or - when you need a guarantee - lets you type an exact KB limit and automatically reduces quality and resolution until the result fits, all without ever uploading your photo to a server.

Email Attachment Limits

Shrink a photo under your email provider's attachment size limit before sending.

Website Upload Forms

Hit a form's exact "max 2MB" or "max 500KB" requirement reliably, every time.

Faster Page Loads

Compress photos for a blog, portfolio, or online store so pages load faster.

Save Storage Space

Shrink a large photo library to save space on your device or cloud storage.