Image Compressor
Reduce image file size by up to 80% without losing visible quality.
Compress JPG, PNG, WebP
Drag & Drop or Click to Select
Finished!
Why Compress Images?
Large image files slow down websites, take up storage space on your phone, and are difficult to email. The ToolOnWeb Image Compressor solves this by intelligently reducing the file size of your images while maintaining visual quality.
Whether you are a web developer optimizing page speed (Core Web Vitals) or a photographer trying to email a portfolio, this tool gives you the control you need.
How It Works
Unlike other compressors that require you to upload your personal photos to a cloud server, our tool uses Client-Side Compression.
- Your photos never leave your device.
- The compression happens right here in your browser using efficient algorithms.
- This means it’s faster (no upload time) and 100% private.
Features
- Smart Compression: We use advanced encoding to strip unnecessary metadata and optimize color profiles, reducing size by up to 80%.
- Adjustable Quality: Use the slider to find the perfect balance between file size and image clarity.
- Bulk Processing: Select 50+ images at once and download them all as a single ZIP file.
- Visual Comparison: See exactly how much space you are saving (e.g., “Saved -65%”) before you download.
Frequently Asked Questions
Does this tool support PNG transparency?
Yes, but to achieve maximum compression, complex transparent PNGs are often best converted to WebP. If you keep them as PNG, the file size reduction might be smaller compared to JPG.
Will my photos look blurry?
At the default setting (75%), the difference is usually invisible to the human eye. If you go lower (e.g., 30%), you might see some pixelation, but the file size will be tiny.
Is there a limit?
There is no hard limit on the number of files. However, converting hundreds of high-res photos at once depends on your computer’s processing power.