Image Resizer

About this image resizer

This tool resizes JPG, PNG, and WebP images entirely in your browser using the HTML canvas element. Your image is decoded, redrawn at the size you choose, and exported back to a file — nothing is ever uploaded to a server.

How to resize an image online

Upload an image, then choose new dimensions either by typing an exact width and height or by picking a percentage of the original size. Preview the result summary, click "Resize Image," and download the file once it's ready.

How image resizing works

Resizing draws your original image onto a canvas at new dimensions, which resamples the pixels to fit. The browser handles the interpolation, and this tool enables high-quality smoothing so the result looks as clean as possible.

How to resize an image without changing the aspect ratio

Keep "Lock aspect ratio" turned on. When it's on, changing the width automatically recalculates a matching height (and vice versa), so the image keeps its original proportions and isn't stretched or squashed. Turn it off only if you intentionally want independent width and height.

JPG vs PNG vs WebP

JPG is a compressed format best for photos, but it doesn't support transparency. PNG supports transparency and is often better for graphics, logos, and screenshots, though files are usually larger. WebP supports both transparency and strong compression, with good browser support today. Choose "Same as original" to keep your current format, or pick a different one from the output format list.

Does resizing reduce image quality?

Making an image smaller generally looks fine, since you're keeping less pixel data at a smaller size. For JPG and WebP output, the quality slider also controls compression — lower values produce smaller files with more visible compression artifacts, while higher values look closer to the original at a larger file size.

Can I make an image larger?

Yes, but increasing dimensions beyond the original size does not add new detail — the browser is stretching existing pixel data, so larger images from a small original may look softer or less sharp.

Are my images uploaded?

No. Everything happens locally using your browser's canvas and file APIs. Your image is never sent to ToolLora's servers or any third party.

Does resizing remove image metadata?

Exporting an image through canvas typically strips EXIF and other embedded metadata, such as camera details or GPS location if present. This can be useful for privacy, but behavior can vary slightly by browser, so it isn't a guaranteed metadata-removal tool.