Batch-compress images in your browser. PNG files are reduced with color quantization for visually lossless results (comparable to TinyPNG), while JPG and WebP use quality adjustment — original dimensions, format, and EXIF orientation are preserved automatically. Compare before and after with a drag slider and scroll-to-zoom. Everything is processed locally; nothing is uploaded.

How to Compress an Image

1
Drag in one or more images — batch upload supported
2
Compress with one click: PNG quantization, JPG/WebP quality adjustment — dimensions and format preserved automatically
3
Review each file's size change; click preview for a drag-to-compare slider with scroll zoom
4
Download individually or grab everything as a zip

Common Uses

Optimize images for faster web page loading
Meet size limits on platforms and upload forms
Save storage space and bandwidth

Things to Keep in Mind

PNG quantization is visually lossless, but images with rich gradients may show slight banding
Over-compressed JPG shows visible artifacts
Batch processing large images uses browser memory

How to Choose an Image Compressor

vs. TinyPNG and other online tools: nothing is uploaded — private and secure — with the same PNG quantization, plus before/after comparison
vs. desktop image tools: nothing to install
Smart one-click compression by default; quality, scaling, and format controls in advanced settings

How Image Compression Works

PNG color quantization: the image's colors are reduced to 256 or fewer (median-cut algorithm) and stored as palette indexes. For UI screenshots and illustrations the result is visually identical at 50–80% smaller — the same core idea TinyPNG uses.
JPG takes another route: DCT transform plus quantization, discarding high-frequency detail the eye is least sensitive to. Lower quality settings discard more; photographic content is usually indistinguishable between quality 60 and 80.
WebP is the modern option: 25–35% smaller than JPG at the same quality, with PNG-style transparency support. It's the first choice when you need the smallest possible files.

Image Compression FAQ

Does compression change my image dimensions?

No. Original dimensions and format are preserved: PNG uses quantization (visually lossless) and JPG/WebP uses quality adjustment. To resize, use the scale option in advanced settings.

Can you compress PNG files?

Yes. PNG compression uses color quantization — visually near-lossless, typically 50–80% smaller, comparable to TinyPNG. For even smaller files, convert to WebP in advanced settings.

Can I compress multiple images at once?

Yes. Drag in as many images as you like, compress them in one click, and download individually or as a zip.

Will the image orientation change?

No. EXIF orientation is preserved, so photos taken in portrait mode stay portrait after compression.

Can I compare before and after?

Yes. Click preview to open a drag-to-compare view with scroll zoom and pan, so you can check the fine details for quality loss.

My image file is too big — how do I make it smaller?

One-click smart compression shrinks it substantially. To reduce pixel dimensions too, adjust the scale in advanced settings.

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