What is the difference between contain and cover?

Contain fits the whole image inside the target size (may add padding). Cover fills the target size by cropping.

Can I batch resize many images?

Yes. Add multiple images and download the resized results as a ZIP.

No. dokzen resizes and crops images locally in your browser. Files are not uploaded.

Resize, crop, and export images locally. Presets + batch ZIP download.

Processed locally

Presets

Batch ZIP

No sign-up

Drop images here

Supported: PNG, JPG/JPEG, WebP. Processing happens locally.

Limits: up to 80 images and ~250 MB total per batch (browser dependent).

Resize settings

Preset Fit Width (px)

Leave empty to compute from height (keep aspect).

Height (px)

Leave empty to compute from width (keep aspect).

Output format Quality

88%

Keep aspect ratio Don’t upscale

Background

Used for “Contain (pad)” and JPG output.

Transparent background (PNG/WebP)

Notes

Contain fits the full image and pads the rest. Cover fills the target by cropping.

If you pick only width (or only height) with “Keep aspect ratio”, the missing dimension is computed per image.

Preview

Select an image to preview it.

Selected file

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FAQ

Are my images uploaded?
No — processing happens locally in your browser.

How do I avoid cropping?
Choose “Contain (pad)”.

How do I fill the target size?
Choose “Cover (crop)”.