Free Image Converter

When to Convert to JPEG

JPEG remains the gold standard for photographs and complex images on the web. Use JPEG when you need broad compatibility and small file sizes and do not require transparency. Most social media platforms recommend JPEG for photo uploads.

When to Convert to PNG

PNG is the go-to format for images that need transparency -- logos, icons, screenshots, and graphics with sharp text. PNG compression is lossless, so the image quality is preserved exactly. The trade-off is larger file sizes compared to JPEG.

When to Convert to WebP

WebP is Google's modern format that delivers JPEG-quality images at 25-35% smaller file sizes. It supports both lossy and lossless compression plus transparency. Use WebP for website hero images, thumbnails, and anywhere page speed matters.

When to Convert to AVIF

AVIF offers even better compression than WebP -- typically 50% smaller than JPEG at the same quality. It supports HDR and wide color gamut. Use AVIF for next-generation web performance, but always provide JPEG or WebP fallbacks for older browsers.

Conversion Tips for Different Workflows

• Web development: Convert all hero images to WebP with JPEG fallback via <picture> elements. This saves 25-35% bandwidth without changing visual quality.
• Social media: JPEG at 85% quality is the sweet spot for Instagram, Facebook, and Twitter. PNG is unnecessary for photos and creates files 3-5x larger.
• Email newsletters: Most email clients only support JPEG and PNG reliably. Convert WebP/AVIF images to JPEG before inserting them into email campaigns.
• Game development: PNG for sprites and UI elements (lossless, transparency), JPEG for textures and backgrounds, WebP for packaging if engine supports it.
• Archiving: Store original files in a lossless format (PNG or TIFF). Convert to lossy formats (JPEG, WebP) only for distribution to save space.

Understanding Quality Settings

• 100%: Near-lossless output. Suitable for archival or when maximum quality is critical. File sizes are largest.
• 80-95%: High quality for professional use. Great for photography portfolios and product images where quality matters most.
• 60-80%: The web sweet spot. Images look nearly identical to originals but file sizes are 50-80% smaller. Best for general web use.
• 40-60%: Good for thumbnails, previews, and placeholder images. Visible artifacts in smooth gradients but acceptable for small display sizes.
• Below 40%: Heavy compression for extreme size reduction. Noticeable artifacts. Only use for previews, thumbnails, or bandwidth-critical applications.