Image Resizer
Change image dimensions by exact pixels or percentage scale.
- 1Select files
- 2Adjust & process
- 3Download
How to use this tool & FAQs
Click any question below to expand its guide and answer
Resize photos to exact width and height pixel dimensions or percentage scale while preserving aspect ratio. Fast in-browser resizing with instant PNG and JPEG downloads.
Resize by pixels or percentage
Choose up to 10 still JPEG, PNG or WebP files. In pixel mode, edit a width or height. With aspect ratio locked, that last-edited dimension controls each image; the other is calculated separately for its own ratio. Unlock to set both dimensions explicitly, which may stretch the image. Percentage mode scales both axes.
Does resizing also compress?
JPEG/WebP output uses your quality setting, so resizing and encoding happen together. PNG losslessly re-encodes the resized pixels. Maximum-KiB compression is a separate tool; dimensions are never changed silently to reach a byte target.
Can I enlarge images?
You can scale up within the 24 megapixel and 16384px output limits. Enlarging interpolates pixels; it does not recover detail. Fractional percentage results are rounded to the nearest pixel, with at least 1px on each axis. The actual output dimensions are shown.
What changes?
Browser resampling changes pixels, and all re-encoded outputs omit metadata. Decoded orientation is used. JPEG flattens transparency onto the selected color; PNG/WebP retain transparency as supported by the encoder. Originals stay unchanged. Animated images and unsupported formats are rejected.
Files stay on your device
Processing is sequential and bounded. Cancel stops the current worker and preserves completed downloads. Reset clears files/results and releases previews. No image content is uploaded or persisted by the tool.