Thay đổi kích thước ảnh

Thay đổi kích thước ảnh cho Instagram, Twitter, LinkedIn và nhiều nền tảng khác.

Quick Presets

Width (px)

Height (px)

Maintain aspect ratio

Kéo thả tệp của bạn vào đây

JPEG, PNG, WebP — or click to browse

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About Thay đổi kích thước ảnh

OptiPix Image Resizer lets you resize images to exact pixel dimensions with presets for all major social media platforms. Choose from built-in presets for Instagram posts (1080x1080), Instagram stories (1080x1920), Twitter headers (1500x500), LinkedIn banners (1584x396), Facebook covers (820x312), YouTube thumbnails (1280x720), and more. Or enter custom dimensions for any specific requirement. The resizer uses high-quality bicubic interpolation for smooth results and maintains aspect ratio by default (with an option to disable it for exact sizing). All processing happens in your browser — no uploads, no server processing, complete privacy. The tool supports JPEG, PNG, and WebP inputs, and you can choose your output format. Batch resizing is supported for processing multiple images with the same settings. Perfect for social media managers, content creators, web developers, and anyone who needs images at specific dimensions.

How It Works

The resizer creates a Canvas element at your target dimensions and draws the original image scaled to fit, using the browser's bicubic interpolation for smooth results. The resized image is then encoded in your chosen output format.

Use Cases

•Resize photos to Instagram's 1080x1080 post format
•Create Twitter header images at 1500x500
•Prepare LinkedIn banner images at 1584x396
•Resize product photos to consistent dimensions for e-commerce
•Create YouTube thumbnails at 1280x720

Frequently Asked Questions

What social media presets are available?

Presets include Instagram post (1080x1080), Instagram story (1080x1920), Twitter header (1500x500), LinkedIn banner (1584x396), Facebook cover (820x312), YouTube thumbnail (1280x720), and more.

Can I enter custom dimensions?

Yes. You can enter any width and height in pixels. You can also lock the aspect ratio to resize proportionally.

Does resizing affect image quality?

Downscaling (making smaller) preserves quality well. Upscaling (making larger) may reduce sharpness — for best results when enlarging, use the AI Image Upscaler tool instead.

Can I resize multiple images at once?

Yes. Drop multiple files and they will all be resized to the same dimensions.

Does this maintain the aspect ratio?

By default, yes. The tool locks the aspect ratio to prevent distortion. You can unlock it if you need exact dimensions regardless of the original proportions.

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