PrivConvert

Image tool

Compress Image

Shrink an image with smart format selection, resizing, and original-file fallback.

Add your input

Your file stays in this browser.

Settings

Good to know1 file · 50 MB max
Upload a JPG, PNG, WebP, GIF, or BMP fileResult: JPG files
  • Auto compares the decoded source format with WebP and keeps the smaller candidate.
  • Images larger than the maximum dimension are resized proportionally before encoding.
  • Re-encoding removes embedded metadata; animated inputs are compressed as a single still frame.
  • The original file is returned by default when the compressed candidate is larger.

Next tools

Keep working with this file

Batch Image CompressCompress multiple images with smart size fallback and download a ZIP report.Resize ImageResize an image by width, height, or scale percentage.Image to WebPConvert JPG or PNG images to WebP.Add Border to ImageExpand an image canvas and draw a solid border.

How it works

How to use Compress Image online

  1. Choose a JPG, PNG, WebP, or other supported browser image.
  2. Choose automatic or explicit output format, quality, maximum dimensions, and a JPEG background when needed.
  3. Compress the image in your browser, compare the result, and download the smaller file.

Overview

Make an image smaller with automatic format comparison

Reduce an image for email, websites, or storage without sending it to a conversion server. Auto mode compares the decoded source format with WebP, large images can be resized proportionally, and the original is returned when compression would increase the file size.

Input

Upload a JPG, PNG, WebP, GIF, or BMP file

Output

JPG files

Limits

1 file · 50 MB max

Best for

Compress Image use cases

  • Reduce a photo before attaching it to email or a form.
  • Create a smaller WebP or JPG image for a website.
  • Convert a transparent image with a chosen solid background.

Processing

What happens in your browser

PrivConvert uses createImageBitmap, OffscreenCanvas, and Canvas 2D for this workflow. 5 adjustable settings. This tool checks for offscreen canvas support before running

Auto compares the decoded source format with WebP and keeps the smaller candidate.

Related tools

Batch Image CompressResize ImageImage to WebPAdd Border to ImageAdd Text to ImageAdjust Image

FAQ

Compress Image questions

See how privacy works

Is Compress Image free to use?

Yes. This tool is free to use in your browser and does not require an account.

Are my files private?

Compress Image uses createImageBitmap, OffscreenCanvas, and Canvas 2D in the browser. Selected files are processed locally when the required browser features are available, while application, library, model, security, and limited analytics requests may load separately.

What limits should I know about?

1 file · 50 MB max. Auto compares the decoded source format with WebP and keeps the smaller candidate.

Which format usually creates the smallest image?

WebP or JPEG often creates a smaller photographic image than PNG. The best choice depends on whether you need transparency or lossless detail.

Does image compression reduce quality?

JPEG and WebP quality settings trade some detail for a smaller file. PNG output is useful when you need transparency or sharper lossless graphics.