Free Online Tool

Online Image Resizer

Resize JPG, PNG, WebP, GIF & BMP images instantly — single or batch. Social media presets, aspect ratio lock, and quality control. 100% free, private, and processed entirely in your browser.

Instant resize Batch processing Social presets 100% private
Drop your image here or click to browse
Supports JPG, PNG, WebP, GIF, BMP · Max 20MB
Original
No image uploaded
—
Resized Output
Resized image will appear here
—
Width
Height
90%
Smaller file Better quality
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Why Use Our Free Image Resizer?

⚡

Lightning Fast

Resize images instantly in your browser with no upload delays or server queues.

🔒

100% Private

Images are processed locally — nothing is ever uploaded to any server.

📦

Batch Processing

Resize multiple images at once and download them all as a single ZIP file.

📱

Social Presets

One-click sizing for Instagram, Facebook, Twitter, YouTube, and more.

How to Use the Image Resizer

1

Upload Your Image

Drag and drop or click to browse and select your image. Supports JPG, PNG, WebP, GIF, and BMP.

2

Set Dimensions

Enter custom width and height, use a preset size, or resize by percentage. Lock aspect ratio to prevent distortion.

3

Choose Output

Select output format (WebP, JPEG, PNG) and adjust quality slider for optimal file size.

4

Resize & Download

Click Resize, preview the result, then download your resized image — all in your browser.

💡 Pro Tip: Use WebP format for 25–35% smaller files than JPG with the same quality. Enable Lock aspect ratio to maintain proportions when changing one dimension.

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Common Image Sizes for Social Media Platforms

PlatformImage TypeRecommended SizeAspect Ratio
InstagramSquare Post1080 × 1080 px1:1
InstagramStory / Reel1080 × 1920 px9:16
FacebookPost Image1200 × 630 px1.91:1
FacebookCover Photo820 × 312 px2.63:1
Twitter / XPost Image1200 × 675 px16:9
LinkedInPost Image1200 × 627 px1.91:1
YouTubeThumbnail1280 × 720 px16:9
PinterestPin1000 × 1500 px2:3

Frequently Asked Questions

Set the quality slider to 90–100% and avoid enlarging images beyond their original dimensions. Choose PNG for lossless output or WebP for the best compression-to-quality ratio. Always keep your original file as a backup.

Resizing changes the pixel dimensions (width × height) of an image. Compression reduces file size by removing unnecessary data without changing dimensions. Our tool does both simultaneously — resize and adjust quality in one step.

Yes. For printing, standard quality is 300 DPI. For an 8×10 inch print at 300 DPI you need 2400 × 3000 pixels. Use the custom dimensions input to set exact pixel sizes.

No strict limit. Very large images (over 10,000px) may slow processing depending on your device. For best performance, images under 20MB are recommended.

Most email providers limit attachments to 10–25MB. Resize images to 800–1200px width and use 70–80% quality in JPG format. This typically reduces each image to under 500KB.

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Privacy & security notice

This image resizer runs entirely in your web browser. No images are ever transmitted, stored, or logged by our servers. All processing is instant and completely private.