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Image Resizer

Image Resizer

Image Resizer supports batch resizing by width, height, or ratio, with multiple scaling modes and ZIP download for bulk processing.

Width

px

Height

px

Keep Ratio

Resize Mode

Drag & drop images here or click to select

Supports PNG / JPEG / WebP / AVIF / HEIC / HEIF
Image Resizer

Quick Start

1
Import images: Drag & drop or click to select, multiple files supported
2
Set size: Enter target width and/or height (pixels)
3
Keep ratio: Enable to maintain original aspect ratio when scaling
4
Select mode: Contain/Cover/Stretch/Scale Down
5
Start resize: Click button for batch processing
6
Download result: Individual files can be downloaded
7
Download all: Package all results as ZIP download

Common Scenarios

Generate thumbnails

batch-create fixed-width or fixed-height previews for lists, dashboards, or file browsers.

Social media

standardize asset sizes for square, portrait, or landscape placements across platforms.

Banner assets

resize images to the dimensions required for headers, landing pages, or ad slots.

Avoid upscaling

use scale-down mode so smaller images keep their original size and stay sharper.

Also useful for changing width and height, keeping aspect ratio, and batch resizing before direct download or ZIP export.

Resize Options

Width: Target width (pixels), leave empty to derive from height and mode
Height: Target height (pixels), leave empty to derive from width and mode
Keep ratio: Enable to maintain original aspect ratio when scaling
Contain: Scale proportionally to fit within target box, no crop, no fill
Cover: Scale proportionally to cover target box, center crop to target size
Stretch: Ignore ratio and stretch directly to target size, may distort
Scale Down: Only shrink if original is larger than target, no upscaling

Usage Advice

Cover mode requires both width and height, otherwise crop cannot execute
To avoid distortion, don't use stretch mode
To avoid upscaling, choose scale down mode
Large quantities or oversized images recommend batch processing, keep page in foreground

Limitations & Compatibility

Very large resolutions or too many files may cause memory issues or processing failures
Colors may have subtle differences after scaling (browser color management)
Processing may strip some metadata (e.g., EXIF)

Privacy & Security

Images are processed locally in your browser. You can adjust size settings and generate new results before downloading.

FAQ

6

Continue with these related tools for the next step.