🗜️ Image Compressor & Optimizer Tools

Shrink file size without visibly losing quality.

Image compressors reduce file size — for faster websites, smaller email attachments, or upload limits — while keeping the photo looking the same. Some are JPEG-focused, some optimize PNG and WebP, and a few let you reduce a photo to a target size in KB. Every tool here works online, most with no signup; filter by free to compare them.

Pricing
Learning curve
Platforms
8 tools
Free

Squoosh

Free, open-source image compressor from Google that runs entirely in your browser, with a live before-and-after preview.

IntermediateWeb
Details
Freemium

TinyPNG

Drag images in, get much smaller files out: the default web image compressor.

BeginnerWeb
Details
Free

Optimizilla

Compresses a batch of images entirely inside your browser, with a quality slider per image and nothing uploaded.

BeginnerWeb
Details
Freemium

Compressor.io

Shrinks an image file as far as it can, lossy or lossless, and lists the size saved for every file.

BeginnerWeb
Details
Freemium

ShortPixel

Compresses JPG, PNG and animated GIF images with a choice of three strengths, and converts them to WebP or AVIF for the web.

BeginnerWeb
Details
Free

CompressJPEG

Shrinks JPEG photos inside your browser, with a quality slider for each photo, free and with no account.

BeginnerWeb
Details
Freemium

Kraken.io

Kraken.io is a developer-grade image optimizer with a free web page for lossy and lossless compression.

BeginnerWeb
Details

Related categories

🔁 Format Converters📏 Resize & Crop