Image Converter

Image Converter

Convert images between different formats with quality and size control

Image Converter

Maximum file size: 5MB

90%

Lower quality = smaller file size

How It Works

Select your image (jpg, jpeg, png, gif, bmp, webp formats supported)
Choose your target format
Adjust quality (lower quality = smaller file size)
Optionally resize the image dimensions
Click "Convert Image" to process
Download your converted image

Conversion Results

Upload and convert an image to see results here.

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Image Format Information

Understanding Image Formats

Different image formats have specific strengths and are designed for particular use cases. Here's a quick overview of common formats:

Format Best For Pros Cons
JPG/JPEG Photographs, complex images with many colors Small file size, widely supported Lossy compression, no transparency
PNG Images that need transparency, screenshots, graphics Lossless compression, transparency support Larger file size than JPG for photos
GIF Simple animations, images with few colors Animation support, widely compatible Limited to 256 colors, can be large for complex images
BMP Perfect quality, system applications Lossless, no compression artifacts Very large file sizes
WebP Web graphics, modern websites Better compression than JPG/PNG, supports animation & transparency Not universally supported by older browsers

Choosing the Right Format

For Photographs:

  • JPG/JPEG: Best for photos where some quality loss is acceptable in exchange for smaller file size
  • WebP: Modern alternative to JPG with better compression

For Graphics & Images with Transparency:

  • PNG: Ideal for logos, icons, graphics with transparency needs
  • WebP: Good alternative to PNG with better compression

For Animations:

  • GIF: Traditional choice for simple animations
  • WebP: Modern format that supports animation with better compression than GIF

For Maximum Quality:

  • BMP: Uncompressed format that preserves every pixel exactly
  • PNG: Lossless compression that preserves quality while reducing size somewhat

Quality Settings & File Size

The quality setting has a significant impact on file size for lossy formats like JPG and WebP. Lower quality means more compression and smaller files, but also more visual artifacts.

Quality Setting Guidelines:

  • 90-100%: High quality, minimal compression artifacts, larger files. Good for professional photos or archiving.
  • 70-85%: Good quality balance for most web use, noticeable file size reduction with minimal visible loss.
  • 50-65%: More significant compression, visible artifacts but useful for thumbnails or when bandwidth is critical.
  • Below 50%: Heavy compression with obvious quality loss, but very small files.

For PNG files, the quality setting affects the compression algorithm's effort level, not the visual quality. Higher settings will take longer to compress but may result in slightly smaller files.

Resizing Considerations

Resizing images can dramatically reduce file size, but it's important to maintain the proper aspect ratio to prevent distortion.

Tips for Resizing:

  • Keep the aspect ratio locked to prevent image stretching or squishing
  • When downsizing, consider sharpening the image slightly to maintain clarity
  • Avoid upsizing images significantly as it will result in blurriness or pixelation
  • For web use, size images to the largest dimensions they'll be displayed at
  • For retina/high-DPI displays, consider making images 1.5-2x larger than standard display dimensions

Common Image Optimization Use Cases

For Website Images:

  • Convert photos to JPG or WebP at 70-80% quality
  • Resize to the maximum display dimensions needed
  • For icons and logos with transparency, use PNG or WebP

For Email Attachments:

  • Convert photos to JPG at 60-70% quality
  • Resize large images to reduce overall file size
  • Consider creating a ZIP archive for multiple images

For Printing:

  • Use high-quality JPG (90-100%) or lossless formats like PNG
  • Ensure sufficient resolution (typically 300 DPI)
  • Don't resize larger than the original dimensions

For Social Media:

  • Each platform has optimal dimensions (research current recommendations)
  • JPG at 70-85% quality is usually sufficient
  • Most platforms will recompress your images anyway
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