Batch Image Resizer

Quickly resize multiple images with pixel or print units. Choose stretch, crop, or color fill for different needs.

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

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A desktop version is available with more powerful, stable features. Open desktop version

1Select or Drop ImagesAll processing is done locally in your browser. Images are not uploaded.

🖼️

Click to select images, or drop / paste (Ctrl+V) here

Supports common formats such as JPG / PNG / WebP / GIF / BMP / AVIF

Recommended: up to 500 images at once. Very large images (>100MP) will be downsampled to the limit.

💡 Tip

Portrait photos from phones will be auto-rotated using EXIF orientation; no manual adjustment needed. Metadata is removed by default to reduce size and protect privacy.

1Size Mode

📏

Exact Size

Set width × height

By Percentage

Scale up or down

↔️

By Long/Short Side

One side only

📦

Max Bounds

Fit into box

2Exact Size Settings

Size Unit

DPI (for millimeters/centimeters/inches)

Target width(px)

Target height(px)

Lock aspect ratio (from reference image) Do not upscale (keep original if smaller than target) Round dimensions down to even numbers (video-friendly)

3Quick presets

2Percentage settings

Scale percentage

50%

Quick select

2Long/short side settings

Limit side

Side length (px)

Do not upscale

2Max bounds settings

Max width (px)

Max height (px)

Scale proportionally to fit fully inside the box: long side ≤ max width, short side ≤ max height. Useful for limiting file size while keeping aspect ratio.

1Resize MethodOnly works in "Exact size" mode

↔️

Stretch to size

Resize directly to target width and height; may distort

✂️

Crop to fit

Keep aspect ratio and crop excess

🎨

Pad empty space

Keep aspect ratio and fill empty space

2Crop anchor

Crop position

Smart center tries to keep the subject from being cropped when possible; falls back to center crop.

2Fill background

Fill type

Background color

Blur strength

25px

1Output format

Image format

Compression quality (JPEG/WebP/AVIF)

Background compositing (transparent → opaque)

EXIF metadata

2Processing performance

Concurrent jobs

Large image protection (pixel limit)

When over limit

Scaling algorithm

⚠️ Performance tip

Higher concurrency is faster but uses more memory. For hundreds of high-res images, use 4-6 jobs.

3Package output

After processing

ZIP compression level

1File naming rules

Naming template

Start number

Sequence padding

Name conflict

Available variables

{name} 原文件名 · {ext} 扩展名 · {index} 序号 · {w} 新宽 · {h} 新高 · {ow} 原宽 · {oh} 原高 · {date} 日期 (YYYYMMDD) · {time} 时间 (HHMMSS)

示例：resized_{name}_{w}x{h}{ext} → resized_photo_800x600.jpg

Filename preview (first 3):—

🎉 Results

Success

Failed

Original total size

0 B

Processed total size

0 B

Instructions

How to Use:

In the "Choose Images" tab, click, drag in, or paste (Ctrl+V) images. You can add hundreds at once.
In the "Size Settings" tab, choose one of four size modes: exact size, percentage, long/short side, or maximum bounding box. Exact size supports pixels, millimeters, centimeters, inches, and DPI.
In the "Resize Method" tab, choose stretch, crop, or fill. Crop supports 9-point anchors and smart center. Fill supports solid color, transparent, or blurred background.
In the "Output Options" tab, set the output format (JPG/PNG/WebP/AVIF), quality, EXIF strip/keep, concurrency, pixel limit, and ZIP compression level.
In the "Naming Rules" tab, customize filenames with variables such as {name}{ext}{index}{w}{h}{date}. Preview updates in real time.
Click "Start Processing" to begin batch resizing. You can cancel during processing, then download files individually or as a ZIP.

Features:

Fully local processing: Images are not uploaded. Everything runs in your browser for privacy and security.
Four size modes:
- Exact size: Set width × height with pixels, mm, cm, inches, and 72-1200 DPI.
- Percentage: Scale up or down from 5% to 400% while keeping aspect ratio.
- Long/short side: Set only one side; the other is calculated proportionally. Ideal for cases like "long side 1920".
- Maximum bounding box: Scale proportionally to fit within a specified width and height.
Three resize methods: Stretch to target size, crop to fit while preserving ratio (9-point anchor + smart center), or fill empty areas while preserving ratio (solid color, transparent, or blurred original background).
Auto EXIF rotation: Portrait phone photos are corrected automatically. Metadata is stripped by default to reduce size and protect privacy, or can be kept.
Multiple output formats: Supports JPEG, PNG, WebP, and AVIF with quality from 10 to 100. Unsupported browser formats are downgraded automatically.
Batch performance: Adjustable 1-8 concurrent tasks for hundreds of images. Large-image pixel limits (25-200 MP) can downsample, skip, or force process oversized images.
Quick presets: Built-in presets include 1920×1080, 4K UHD, social square, A4 300 dpi, ID photo, and more.
Rename templates: Supports {name}, {ext}, {index}, {w}, {h}, {ow}, {oh}, {date}, and {time}. Indexes can be zero-padded, and duplicate names get suffixes automatically.
Flexible upload: Click to select, drag and drop, or paste from the clipboard. The selected file list, total size, and dimensions are shown in real time.
One-click packaging: Choose ZIP compression level (none, fast, standard, or best), view packaging progress, and download files individually or as one ZIP.