Step 1 — Upload Your Image
Supported Image Formats
Best for photos. Lossy compression, smaller file sizes. Most universally supported.
Lossless quality. Supports transparency (alpha channel). Best for graphics and logos.
Google's modern format. Up to 30% smaller than JPG/PNG. Ideal for web use.
Supports animation. Limited to 256 colors. Best for simple animated graphics.
Uncompressed bitmap. Very large file sizes but highest quality. Windows native format.
When to Use Each Image Format
Choosing the right image format can dramatically affect your website's load time, image quality, and storage usage. Here's a complete guide to help you decide.
Use JPG/JPEG When:
You're working with photographs or images with millions of colors. JPG uses lossy compression, meaning some data is permanently discarded to reduce file size. A quality setting of 80–90% delivers a good balance between quality and file size for most use cases. At 60–70%, file sizes are very small but visible artifacts may appear. JPG does not support transparency.
Use PNG When:
You need a transparent background (e.g., logos, icons, graphics). PNG uses lossless compression — no quality is lost. However, PNG files are significantly larger than JPG for photographs. PNG-8 supports up to 256 colors; PNG-24 supports full color depth with transparency. Always use PNG for screenshots, diagrams, and graphics with flat colors.
Use WEBP When:
You're optimizing images for a website. WEBP, developed by Google, supports both lossy and lossless compression, as well as transparency and animation. WEBP images are typically 25–34% smaller than comparable JPG images and 26% smaller than PNG files of the same quality. All modern browsers now support WEBP, making it the best choice for web developers.
JPG vs PNG vs WEBP — Size Comparison
For a typical 1920×1080 photo: JPG at 85% quality ≈ 400KB, PNG-24 ≈ 2.5MB, WEBP at 85% quality ≈ 250KB. For a logo with transparency: PNG-24 ≈ 50KB, WEBP (lossless) ≈ 35KB. The savings with WEBP are especially significant when serving thousands of images on a website — the bandwidth reduction can be substantial.
Image Conversion Tips
Converting JPG to PNG: This does not recover quality that was lost in the original JPG compression. The resulting PNG will be lossless but will preserve any existing JPG artifacts at a much larger file size. Converting PNG to JPG: Transparency will be filled with a white (or solid) background since JPG doesn't support alpha channels. Converting to WEBP: Almost always results in smaller file sizes with similar perceived quality — highly recommended for all web images.