Image resizer

What this tool does

Resizing uses canvas interpolation. It is appropriate for web graphics and previews. It is not a photographic RAW pipeline and does not use Lanczos as a named, guaranteed kernel.

How to use it

1. Drop images.
2. Set width, height, or percent.
3. Keep aspect ratio locked unless you intend to stretch.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: Browser decoder / canvas encoder. Limit: 10 files, 25 MB each (25.00 MB).

Limitations

• Upscaling cannot invent detail.
• SVG is not a first-class vector resize in this tool.

Example

banner.png 2400×800

banner.png 1200×400 (50%)

Troubleshooting

The image looks soft

You downscaled a photograph a long way, or you upscaled. For photographs, start from a larger original rather than enlarging a small export.

FAQ

Does lock aspect use the original ratio?

Yes. Providing only a width computes height from the source ratio.

Can I resize to social presets?

Use the social image resizer for named presets such as Open Graph 1200×630.

Is the resize done on a worker?

Encoding happens on the main thread with cancellation between files. Huge images may still hitch the UI; the pixel cap exists for that reason.

Will metadata survive?

No. Canvas export strips EXIF and PNG text chunks. Use the metadata remover if that is the goal, or keep the original file.