Image Resizer
Resize an image to exact pixel dimensions, right in your browser. Resize one image with aspect-ratio locking, or switch to Bulk mode to resize many images to the same target size at once and download them all as a ZIP.
Locking the aspect ratio
Keep the aspect ratio locked to avoid stretching or squashing your image — changing one dimension automatically recalculates the other to match the original proportions.
Upscaling vs downscaling
Reducing an image's dimensions preserves quality well. Enlarging an image beyond its original size stretches existing pixels and can introduce visible blurriness — there is no way to add detail that was not in the original.
Bulk mode
Bulk mode resizes every selected image to the same target width and height and bundles the results into one ZIP file — note that in bulk mode, each image is resized to the exact same dimensions rather than preserving its own individual aspect ratio.
Common Mistakes to Avoid
Unlocking aspect ratio without meaning to
Solution:
Setting width and height independently without locking the aspect ratio will stretch or squash the image. Keep the lock on unless you specifically want a different ratio.
Enlarging a small image significantly
Solution:
Resizing up beyond the original resolution cannot add real detail — the result will look soft or blurry. Start from the highest-resolution source available.
Frequently Asked Questions
Downscaling generally preserves quality well. Upscaling significantly beyond the original size can introduce blurriness, since no new detail is being added.
No — resizing happens entirely in your browser using the Canvas API.
Locking the aspect ratio
Keep the aspect ratio locked to avoid stretching or squashing your image — changing one dimension automatically recalculates the other to match the original proportions.
Upscaling vs downscaling
Reducing an image's dimensions preserves quality well. Enlarging an image beyond its original size stretches existing pixels and can introduce visible blurriness — there is no way to add detail that was not in the original.
Bulk mode
Bulk mode resizes every selected image to the same target width and height and bundles the results into one ZIP file — note that in bulk mode, each image is resized to the exact same dimensions rather than preserving its own individual aspect ratio.