Resize Images Online

Free image resizing tool with preset sizes for social media.
All processing happens in your browser. Fast and secure.

Upload Image

Select or drag an image file to the area below

🖼️

Click to select an image or drag it here

Supports PNG, JPG, WebP (MAX. 10MB)

How to Resize Images Online

Free tool with no registration. All processing happens in your browser for complete privacy.

1. Upload Image

Click or drag PNG, JPG, or WebP. Preview displays instantly with original dimensions.

2. Choose Size

Select preset sizes for Instagram, Facebook, YouTube, or enter custom dimensions. Pick output format.

3. Adjust Settings

Lock aspect ratio to maintain proportions. Choose fit mode and quality level for optimal results.

4. Download Result

Click resize to process in browser. Preview and download instantly. Fast and private.

Frequently Asked Questions

Everything you need to know about resizing images in your browser.

What image formats are supported?

Supports PNG, JPEG, JPG, and WebP for both input and output. Choose any supported format for upload and select your preferred output. For transparent images, use PNG to preserve transparency.

What are the preset sizes?

12 preset sizes optimized for popular platforms: Instagram Square (1080×1080), Portrait (1080×1350), Landscape (1080×566), Facebook Cover (820×312), Twitter Header (1500×500), YouTube Thumbnail (1280×720). Web presets from Thumbnail (150×150) to 4K (3840×2160). Presets ensure images meet platform requirements.

How do Contain, Cover, and Fill modes differ?

Fit modes determine how images adapt to dimensions. Contain fits entire image inside specified size, possibly leaving empty space. Cover fills entire area, potentially cropping edges. Fill stretches to exact dimensions, which may distort. Choose based on priority: visibility (Contain), coverage (Cover), or precise size (Fill).

What quality setting should I use?

Quality (1-100%) affects JPEG and WebP only; PNG is always lossless. For web, 80-90% balances quality and file size. Use 90-100% for print or maximum quality. Lower values (60-80%) work for thumbnails or bandwidth-limited cases.

Is this tool private and secure?

Yes! All processing happens in your browser using HTML5 Canvas API. Images never leave your device or upload to servers. We cannot see, store, or access your images. Complete privacy with faster processing—no upload or download delay.

Can I resize large images?

Handles images up to 10MB and 4K resolution (3840×2160) efficiently. Processing time depends on device capabilities—modern computers process almost instantly, older devices may take seconds for large files. Keep browser updated for best performance.

How do I maintain aspect ratio?

Click the lock icon between width and height fields. When locked, tool automatically calculates corresponding dimension when you change either value, preserving original proportions. Prevents distortion and maintains visual quality.

Can I use this commercially?

Yes! Completely free for personal and commercial use with no restrictions or attribution. Use for client projects, e-commerce, marketing materials, or any purpose. All resized images are yours without limitations.