Image Resizer

Free Image Resizer that works offline

Resize a photo, screenshot or graphic entirely on the device. Width and height can stay linked by aspect ratio, and the Canvas API creates a downloadable result in a selected web format.

What this image resizer does

Browser-based resizing decodes the source, draws it onto a canvas at new dimensions and encodes that canvas again. JPEG and WebP quality controls affect compression, while PNG remains lossless and may produce a larger file.

How to use the Image Resizer

1. Enter or paste a local image file and target pixel dimensions into the tool.
2. Adjust the available options so they match the format and result you need.
3. Choose Process image and review a resized PNG, JPEG or WebP file ready to download before using it.
4. Copy or download the result, then clear the page if the input was sensitive.

Common uses

• Preparing images for a website
• Reducing screenshot dimensions
• Creating social-media preview sizes
• Converting large local graphics to practical web dimensions

Private processing and offline access

This tool does not submit your input to a conversion server. Processing takes place inside the browser using local JavaScript and standard Web APIs. After the PWA has been installed or cached, the page and its core features remain available without an internet connection. Closing or clearing the page removes unsaved input; the tool does not create an account or cloud history.

Tips for accurate results

• Resize from the highest-quality source available.
• Avoid enlarging small images because it cannot restore missing detail.
• Check the preview and file size before replacing an original.

Frequently asked questions