Free Online Image Resizer

1. Upload your image (JPG, PNG, WebP, GIF, BMP, TIFF).
2. Enter target width and/or height in pixels (or choose a preset).
3. Choose 'Preserve aspect ratio' (default) or 'Stretch to fit'.
4. Click 'Resize Image' — takes 1-3 seconds.
5. Download the resized image.

Resize images to exact pixel dimensions for websites, social media, app icons, and print — with optional aspect-ratio preservation to prevent distortion.

Different platforms require different image dimensions — Instagram prefers 1080×1080, YouTube thumbnails are 1280×720, app icons are 1024×1024, WordPress hero images are 1920×1080. Resizing to exact dimensions ensures your image looks sharp and fits within platform constraints. Our tool preserves aspect ratio by default (no distortion) and uses high-quality resampling (Lanczos) to keep edges crisp.

The tool decodes the image, resamples it to the target dimensions using high-quality Lanczos filtering (or nearest-neighbor if requested), and re-encodes it in the original format. Aspect ratio preservation scales the smaller dimension automatically. Output keeps the original format and quality settings.

• Resizing images to Instagram's 1080×1080 preset.
• Preparing YouTube thumbnails at 1280×720.
• Resizing app icons to 1024×1024.
• Scaling images to WordPress hero size (1920×1080).
• Shrinking large photos for email or web.
• Making images fit exact dimensions for a template.
• Batch-preparing assets for social media campaigns.

Resizing uses Lanczos resampling — high-quality, sharp edges, minimal artifacts. Downscaling produces excellent results. Upscaling can't invent detail — a 500px image scaled to 2000px will look soft. For upscaling, use an AI upscaler.

• Upscaling beyond ~2x the source resolution looks soft.
• Animated GIFs/WebP only resize the first frame.
• Very large upscales (8x+) may produce artifacts.
• EXIF orientation may not be preserved in some cases.
• Vector formats (SVG, EPS) aren't supported (no fixed dimensions).

• Output opens in every browser, viewer, and OS.
• Preserves original format (JPG in, JPG out).
• Transparency preserved for PNG and WebP.
• EXIF metadata preserved.
• Standard image formats — no special software needed.

• Preserve aspect ratio unless you have a specific reason not to.
• For social media, use the presets (Instagram, YouTube, etc.).
• Downscale instead of upscale whenever possible.
• Combine with compression for maximum size savings.
• Aspect-ratio lock prevents distortion — always start there.

Image looks stretched or distorted

Aspect ratio wasn't preserved. Enable 'Preserve aspect ratio' to prevent stretching.

Upscaled image looks blurry

Upscaling can't add detail. Use an AI upscaler, or start with a higher-resolution source.

Output dimensions are off by a few pixels

When preserving aspect ratio, rounding may cause a 1-2 pixel difference. Disable 'Preserve aspect ratio' to hit exact dimensions.

• W3C — PNG Specification
• Google — WebP Documentation