Free Developer Image Tools

Image utilities built for web developers and designers. Generate favicons, encode to Base64, create sprite sheets, analyze metadata, and more. All browser-based — no server dependencies.

Image to Base64

Convert images to Base64 data URIs for embedding in HTML, CSS, or JSON.

Favicon Generator

Generate all required favicon sizes (16px to 512px) plus Apple Touch Icon from one image.

Sprite Sheet Generator

Combine images into CSS sprite sheets for reducing HTTP requests.

Placeholder Image Generator

Generate solid-color placeholder images at any dimensions for mockups.

OG Image Generator

Generate Open Graph meta images with custom text and gradient backgrounds.

SVG to PNG Converter

Rasterize SVG files to PNG at any resolution for use in non-vector contexts.

QR Code Generator

Generate QR codes from text or URLs as high-resolution PNG images.

EXIF Metadata Viewer

View or strip EXIF metadata including GPS, camera info, and timestamps.

File Type Detector

Detect actual image format from binary signature regardless of file extension.

Batch Dimensions Checker

Check width, height, and aspect ratio of multiple images at once.

Image to ICO Converter

Convert any image to Windows .ico format for desktop apps.

Screenshot Beautifier

Add gradient backgrounds and drop shadows to screenshots for docs and blogs.

Essential Image Tasks for Web Development

  • Favicon setup: Generate all required sizes (16x16, 32x32, 180x180, 192x192, 512x512) from a single source image. Includes ICO format and Apple Touch Icon.
  • Base64 embedding: Convert small images to data URIs to reduce HTTP requests. Ideal for icons under 10KB, email templates, and CSS backgrounds.
  • Sprite sheets: Combine multiple icons into one image to reduce network requests. Essential for game development and CSS sprite workflows.
  • OG images: Create consistent Open Graph preview images for social sharing without needing a design tool.
  • EXIF stripping: Remove metadata including GPS coordinates before publishing user-uploaded images for privacy compliance.

Image Optimization for Web Performance

Optimizing images is the single biggest performance improvement for most websites. Use WebP or AVIF formats for 30-50% smaller files than JPEG. Serve images at the exact dimensions needed (not larger). Use progressive JPEG for above-the-fold images. Implement lazy loading for below-the-fold images. Strip unnecessary metadata. Consider using Base64 for critical small images to eliminate render-blocking requests.