Image Resizer

Q: What image formats are supported?

The resizer supports JPG, PNG, WebP and GIF as input. Output is downloaded as PNG for formats with transparency, or JPEG for photos. You can choose the output format in the options.

Q: Does resizing reduce image quality?

Making an image smaller (downscaling) usually preserves quality well. Upscaling beyond the original resolution will cause softness or pixelation because pixels are interpolated. For best results, always start with the highest resolution source.

Q: Can I resize multiple images at once?

The current tool handles one image at a time for accuracy and simplicity. For batch resizing, you can process each image separately or use desktop software like GIMP or ImageMagick.

Q: What is the best resolution for web images?

For full-width hero images, 1920×1080 px at 72 DPI is the standard. Product images work well at 800×800 px. Blog thumbnails are typically 1200×630 px (the Open Graph size). Always compress after resizing to keep file sizes small.

Resize any image to exact pixel dimensions or by percentage directly in your browser. Supports JPG, PNG, WebP and GIF. No upload to server — your images stay private. Download the resized image instantly with a single click.

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Drop an image here or click to browse

JPG · PNG · WebP · GIF

How to Resize an Image

Drop your image into the upload area or click to browse. Choose Pixels to enter exact width and height, or Percentage to scale proportionally. With Lock aspect ratio enabled, changing one dimension automatically updates the other. Select an output format, then click Resize Image. Preview both versions side by side and click Download to save.

Maintaining Aspect Ratio

The aspect ratio is the proportional relationship between width and height. Keeping it locked prevents stretching or squishing — for example, a 1200×800 image (3:2 ratio) resized to 600 px wide will automatically set height to 400 px. Unlock it only when you need to fit a specific frame, such as a square avatar or banner with fixed dimensions.

Best Image Sizes for Web

Use Case	Recommended Size	Format
Full-width hero banner	1920 × 1080 px	JPG / WebP
Blog post featured image	1200 × 630 px	JPG / WebP
Product photo (e-commerce)	800 × 800 px	JPG / WebP
Profile / avatar	400 × 400 px	JPG / PNG
Thumbnail / card image	400 × 300 px	JPG / WebP
Logo (transparent)	400 × 200 px	PNG

Social Media Image Dimensions

Platform	Cover / Banner	Post / Share
Facebook	820 × 312 px	1200 × 630 px
Twitter / X	1500 × 500 px	1200 × 675 px
Instagram	—	1080 × 1080 px (square)
LinkedIn	1584 × 396 px	1200 × 627 px
YouTube	2560 × 1440 px	1280 × 720 px (thumbnail)

Frequently Asked Questions

What image formats are supported?

JPG, PNG, WebP and GIF are accepted as input. Output can be saved as PNG, JPG or WebP. For images with transparency (e.g. logos), choose PNG output to preserve the transparent background.

Does resizing reduce image quality?

Downscaling (making smaller) generally preserves visual quality. Upscaling beyond the original resolution interpolates pixels and will look soft or pixelated. Always start from the highest resolution original you have.

Can I resize multiple images at once?

The tool handles one image at a time. For batch resizing, process each image separately. Desktop tools like GIMP, Photoshop or the command-line tool ImageMagick support batch operations.

What is the best resolution for web images?

Hero images: 1920×1080 px. Blog thumbnails: 1200×630 px. Product photos: 800×800 px. Always compress after resizing — use our Image Compressor to cut file size without visible quality loss.