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Batch Image Resize
Resize multiple JPG, PNG, or WebP images in batch. Customize width, height, aspect ratio locks universally, and process all files locally.
Drag & drop files here, or browse
Max file size: 50 MB per file
JPGPNGWEBP
Resize Settings
Dimensions
W
H
Batch Rename Template
Use text for prefix (e.g. travel-photo-1) or a starting number (e.g. 100, 101...).
File Queue (0)
Frequently Asked Questions
What units can I use for resizing?
Pixels (px), Percentage (%), Centimeters (cm), and Inches (in). Physical units use 300 DPI for print-quality conversion.
Can I maintain the aspect ratio?
Yes. The lock button (enabled by default) automatically calculates the height when you change the width, preserving the original proportions.
What's the maximum image size supported?
Up to 50MB per image. Canvas dimensions are safely clamped to 16384px per axis and 100 million total pixels to prevent browser crashes.
Can I resize multiple images at once?
Yes. Upload up to 20 images and resize them all with the same dimensions. Each image processes individually with Web Worker offloading.
What output formats are available?
The output maintains the same format as your input (JPEG, PNG, or WebP) at 92% quality encoding.
Does resizing affect image quality?
Downscaling preserves quality well. Upscaling beyond the original resolution will introduce some softness, which is inherent to pixel interpolation.