How to resize your image
- Upload a JPG, PNG or WebP. The tool reads supported camera orientation metadata.
- Choose pixels, percentage or physical print size. Keep aspect ratio locked to avoid changing the image shape.
- If you need a different aspect ratio, unlock it and choose Fit, Fill or Stretch. Fit keeps everything with padding; Fill crops the centre; Stretch can distort the image.
- Choose output format, quality and background. Review the displayed dimensions and file size, then download.
Quality and transparency
Each resize starts from the original decoded image. Successive half-size reductions are used for large downscales, followed by high-quality canvas resampling. This can reduce aliasing but cannot restore blur or missing detail. Enlarging an image adds pixels rather than genuine source detail.
PNG and WebP can retain transparency. JPG uses the chosen background colour, so transparent areas do not turn black. A PNG quality slider cannot reliably control file size; use JPG/WebP quality if a smaller file is more important than lossless encoding.
Pixels, print dimensions and DPI
Pixel dimensions determine digital image resolution. For example, 25.4 mm at 300 DPI gives 300 pixels. Changing DPI in pixel mode changes JPG/PNG print metadata rather than adding pixels. In mm/cm/inch mode, DPI also changes the calculated pixel dimensions. WebP exports are sized in pixels; this tool does not add WebP print-density metadata.
Privacy and limits
Image processing stays in your browser; this tool does not upload the image to a resize service. Original site analytics, advertising and remote resources remain. Export does not copy source EXIF/GPS metadata. Input is limited to 20 MB / 40 MP; output is limited to 8192 pixels per side and 24 MP total. This is a single-image tool, not a batch resizer or a file-size guarantee.
