Image Compressor
Compress images as WebP or JPEG, or export lossless PNG.
Free. No signup required.
Loading tool…
What this tool does
Compress images with JPEG or WebP quality controls, compare file sizes and try a size target. PNG export is lossless; processing stays in your browser.
How to use
Choose up to 20 images, a compression preset and optional size/dimension targets, then compare results.
Features
Compare before and after sizes, choose JPEG or WebP quality and try a target file size.
When to use it
Prepare photographs for a web page by balancing visible quality, dimensions and download size.
Example and checks
Start with dimensions appropriate for the destination, then compare JPEG or WebP quality settings at the intended display size. A target size is an attempt, not a guarantee: the encoder can reach its quality floor before the target is met. PNG has no lossy quality slider behavior, and re-encoding an already optimized file can make it larger. Keep the original if the new file is larger or visibly worse.
Source: 2400 × 1600 photo
Web display: 1200 × 800
Compare: WebP and JPEG at the same dimensions
Decision: inspect detail and actual output bytesCommon questions
Is a smaller output size always guaranteed?
File size can increase for already optimized images. PNG does not support a lossy quality setting.
Data processing
This tool processes its input locally in your browser without sending it to a server for processing. Input and results are not included in share URLs.
Related tools
Image Resizer
Resize an image in your browser while preserving its aspect ratio.
PNG to WebP
Convert PNG images to WebP locally.
JPG to WebP
Convert JPG images to WebP locally.
Remove Image Metadata
Re-encode an image locally to remove common embedded metadata.
Related guides
How to Compress an Image Without Losing Too Much Quality
Balance dimensions, format and quality when reducing image file size. Compare real outputs and understand why PNG and target sizes behave differently.
How to Convert PNG to WebP
Convert a PNG to WebP, keep transparency and compare quality and size. Learn what to inspect before replacing a web image with the exported file.
How to Remove Image Metadata Before Sharing
Remove common embedded image metadata by exporting a new image, inspect the result and understand what metadata cleanup cannot hide in visible pixels.