Free Image Tools for Web Developers
Optimize images for performance, convert formats for the modern web, generate favicons, and encode to Base64 — all in your browser.
Image optimization is a core part of web performance. Unoptimized images account for the largest share of page weight on most websites, directly impacting Core Web Vitals, PageSpeed scores, and user experience. QuickImg gives you a complete set of free, client-side tools to handle every image task in your development workflow.
Every tool runs entirely in your browser using JavaScript and Canvas APIs. There are no server uploads, no API keys, no rate limits, and no account required. Your images stay on your machine, which makes these tools safe for client work and proprietary assets.
Image to Base64
Encode images as Base64 data URIs for inline embedding in CSS, HTML, or JavaScript. Eliminates extra HTTP requests for small icons and sprites.
Use Tool → 🖼️Image to ICO
Generate multi-size ICO files for favicons. Automatically creates 16px, 32px, 48px, and 256px sizes bundled into a single .ico file.
Use Tool → ⚡Compress Image
Reduce file sizes by up to 90% to hit your PageSpeed targets. Adjust quality precisely with a slider and see the results before downloading.
Use Tool → 🚀Convert to AVIF
Generate AVIF files for maximum compression. AVIF delivers up to 50% smaller files than JPEG with better visual quality at low bitrates.
Use Tool → 🔄Convert to WebP
Convert any image to WebP for 25-35% smaller files than JPEG. Near-universal browser support makes WebP the safe default for web images.
Use Tool → 📐Resize Image
Resize images to exact pixel dimensions or by percentage. Generate responsive image variants at 1x, 2x, and 3x resolutions for srcset.
Use Tool →Recommended Workflow
For the best results, process your images in this order before deploying to production:
- Resize each image to the maximum display width (typically 2x for retina). A 4000px photo shrinks dramatically when resized to 1600px.
- Compress at 75-80% quality. For hero images, use 85%. For thumbnails, 65-70% is usually sufficient.
- Convert to WebP or AVIF. Use the HTML
<picture>element to serve AVIF with a WebP fallback and JPEG as the last resort. - Generate favicons from your logo. Create a multi-size ICO file plus a 180px Apple Touch Icon.
- Encode small assets (under 5 KB) to Base64 for inline embedding, eliminating extra network requests.
This pipeline can reduce total image weight by 90% or more, which typically translates to a 2-4 second improvement in Largest Contentful Paint on image-heavy pages.