Free online image compressor
Reduce image file size for websites, forms, email and everyday sharing. Compress JPG, PNG and WebP images directly in your browser with quality and resize controls.
Upload images, choose output quality and download optimized files without leaving your browser.
Compress images online
Select one or more JPG, PNG, WebP or BMP images. Niva Tools will optimize them locally in your browser.
No images selectedHow it works
Current scope
Image Compressor focuses on everyday image optimization: reducing file size, converting to modern web formats and resizing oversized images before download.
JPG and WebP use adjustable quality. PNG is exported losslessly, so the quality slider is disabled when PNG output is selected.
Related tools
Image Compressor works naturally with the visual tools inside Niva Tools.
Crop images to social media sizes, custom dimensions and web layouts.
Open tool →Create animated GIFs from static image frames.
Open tool →Create, merge, split and organize PDFs from one browser workspace.
Open tool →FAQ
Yes. Image Compressor is a free online tool inside Niva Tools.
Use WebP for modern websites and small file sizes, JPG for broad compatibility and photos, and PNG when you need lossless output or transparency.
PNG is a lossless format and does not use the same quality slider as JPG or WebP. For smaller files, try WebP or reduce image dimensions.
The basic compression workflow runs in your browser using canvas export. Your selected images are processed locally for optimization and download.
