Resize dozens of pictures at the same time. Set custom pixel widths and heights, lock aspect ratios, and download all resized images bundled in a convenient ZIP file.
⚡ Loading interactive calculator and shortcuts...
The Bulk Image Resizer Online on OmniTools is specifically engineered to provide accurate, reliable, and instantaneous calculations without requiring software installations, complex spreadsheets, or subscriptions. Whether you are budgeting expenses, completing academic assignments, analyzing engineering requirements, or streamlining daily digital tasks, this utility ensures precision and speed.
By leveraging client-side web technologies, all input data remains private and confined to your device. There is no external tracking or storage of personal numbers. Bookmark this page or add OmniTools to your home screen for quick, reliable calculations anytime on mobile, tablet, or desktop.
Yes, you can upload a mix of JPG, PNG, and WebP files together.
Bulk compress images in all formats (JPG, PNG, WebP, HEIC, AVIF, GIF, SVG, BMP, ICO) to exact 20KB, 50KB, 100KB, or custom sizes with 1-click ZIP download.
Resize images to exact pixel dimensions with aspect ratio lock and percentage presets.
Create compliant 2x2 inch and 35x45 mm passport & visa photos with white or blue background for India, US, UK, and Schengen.
Resize iPhone HEIC photos to custom width and height pixel dimensions (Full HD, 4K, 1080p, Social presets) with locked aspect ratio.
Maintained and verified by the OmniTools Engineering & Editorial Team. All calculations run client-side in your local web browser with zero server data retention.