Compress Image
Free online image compressor — reduce file size by up to 80% while keeping visual quality. No upload to server.
How to Use
- Select Files: Upload image files
- Choose Quality: Select low/medium/high
- Start Compress: Click compress button
- Download: Get compressed files
Quality
Select Image Files
Drop image files here
Compressing...
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Compression Results (Total: 0 files)
Upload images to compress! Supports JPG, PNG, WebP, HEIC and more.
Compressing images...
Some files cannot be converted.
Compressible files:
.jpg .jpeg .png .webp .heic .heif .gif .bmp .tiff .avif
😄 Free thanks to ads
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Free online HEIC viewer — open and convert Apple HEIC/HEIF photos on any device. No install, no signup required.
Image to JPG
Free online image to JPG converter — convert PNG, WebP, BMP, HEIC to JPG. Batch convert up to 20 files at once.
Image to PNG
Free online image to PNG converter — convert JPG, WebP, BMP, and more to PNG. No install, no upload to server.
Image to WebP
Free online image to WebP converter — shrink image file size with modern WebP format. No install, no upload to server.
SVG Crop
Free online SVG cropper — auto-trim extra whitespace and margins from SVG files. No install, no upload to server.
Image to Base64 Converter
Convert images to Base64 or decode Base64 strings back to images — free, instant, no upload. Generate data URIs ready for HTML img src and CSS background-image.
Frequently Asked Questions
It depends on the compression method. Lossy compression (JPG) can significantly reduce file size but may introduce minor quality loss. Lossless compression (PNG) removes only redundant data with no quality change. The iTool image compressor minimizes quality loss while maximizing file size reduction.
On average 40–80%, depending on the image type and compression settings. High-resolution smartphone photos benefit the most — a 10 MB photo can often be reduced to 1–2 MB.
Yes, JPG (JPEG), PNG, and WebP are all supported. An optimized compression method is applied for each format.
Yes, you can drag and drop or select multiple images for batch compression. Each compressed file can then be downloaded individually.
Yes, the original file remains untouched. iTool processes everything locally in your browser and never uploads files to a server. Only the compressed result is available for download.