Compress Image
Free online image compressor — reduce file size by up to 80% while keeping visual quality. No upload to server.
Add the images you want to compress
Compression Results (Total: 0 files)
How to use Compress Image
- Select Files: Upload image files
- Auto Compress: Compresses automatically on upload
- Check Results: See how much size was saved
- Download: Get compressed files
Related Tools
Image to WebP
Free online image to WebP converter — shrink image file size with modern WebP format. No install, no upload to server.
Image to JPG
Free online image to JPG converter — convert PNG, WebP, BMP, HEIC to JPG. Batch convert up to 50 files at once.
Image to PDF
Free online image to PDF converter — turn JPG, PNG, WebP photos into a single PDF. Reorder pages, no signup needed.
Frequently Asked Questions
Will image quality get worse after compression?
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.
How much smaller will my photos get?
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.
Can I compress JPG, PNG, and WebP files?
Yes, JPG (JPEG), PNG, and WebP are all supported. An optimized compression method is applied for each format.
Can I compress multiple images at once?
Yes, you can drag and drop or select multiple images for batch compression. Each compressed file can then be downloaded individually.
Is the original file preserved?
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.
Which file formats are supported?
JPG, PNG, WEBP, HEIC, GIF, BMP, TIFF, AVIF are supported. Up to 50MB per file and 20 files at a time. Everything runs in your browser, so files are never uploaded to a server.
Help us improve this tool
Share what you like, what needs work, or features you'd like to see
More iTool Features!
HEIC Viewer
Free online HEIC viewer — open and convert Apple HEIC/HEIF photos on any device. No install, no signup required.
Photo Date Stamp (Film Camera Date)
Add a film-camera style date and time to your photos. Auto-reads the EXIF capture date, classic 7-segment orange font, adjustable position and size. 100% in-browser, no upload, no install.
Merge Photos into One
Free tool to combine multiple photos into one image. Add a number and caption to each photo for second-hand listings or document sets. Vertical or grid layout, adjustable spacing, margins, and borders, 100% in-browser with no upload or install.
Image to PNG
Free online image to PNG converter — convert JPG, WebP, BMP, and more to PNG. 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.