How can I verify the image isn't uploaded?

Open your browser's DevTools (F12) and go to the Network tab. Resize an image while watching for requests. No outbound connections appear because all processing happens locally in your browser tab using the Canvas API.

Why resize images without uploading?

Some files are not appropriate to send to a third-party service, and some networks block uploads altogether. Resizing locally avoids both problems.

Which format keeps the most detail after resizing?

PNG, which is lossless, so the resized pixels are saved exactly. JPEG and WebP are smaller but lossy; their quality slider starts at 90%. Choose PNG under Format for graphics and screenshots, and JPEG for photos.

Which image formats are supported?

JPEG, PNG, and WebP are supported as inputs. The resized result is saved as JPEG unless you pick PNG or WebP under Format.

Resize Image Without Uploading

Resize your image entirely in your browser, with no third-party service involved. Pick a preset such as 1920×1080, or click Free to enter your own width and height, choose a format, click Resize, and download the resized result.

Drop an image or click to choose

JPG, PNG, or WebP, up to 50 MB. Runs in your browser.

MODE

PRESET

Presets fill the frame and trim the edges from the centre. Use Image crop first to choose the framing.

FORMAT

QUALITY 90%

Runs entirely in your browser

How it works

This tool runs entirely in your browser. Your image is drawn onto an HTML Canvas element at the target dimensions, then exported as JPEG, PNG or WebP and downloaded directly to your computer. Presets scale the image to cover the preset size and crop the overflow from the centre, so nothing is stretched. Free mode uses the exact width and height you enter.

Processing runs in your browser

All resizing is done using the browser's Canvas API. Our servers are not involved at any point in the process.

Frequently asked questions

How can I verify the image isn't uploaded?: Open your browser's DevTools (F12) and go to the Network tab. Resize an image while watching for requests. No outbound connections appear because all processing happens locally in your browser tab using the Canvas API.
Why resize images without uploading?: Some files are not appropriate to send to a third-party service, and some networks block uploads altogether. Resizing locally avoids both problems.
Which format keeps the most detail after resizing?: PNG, which is lossless, so the resized pixels are saved exactly. JPEG and WebP are smaller but lossy; their quality slider starts at 90%. Choose PNG under Format for graphics and screenshots, and JPEG for photos.
Which image formats are supported?: JPEG, PNG, and WebP are supported as inputs. The resized result is saved as JPEG unless you pick PNG or WebP under Format.

Last reviewed September 30, 2026

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