Image Converter Online Free — PNG, JPG, WebP, AVIF

Why Image Format Matters

Every image format makes different tradeoffs between file size, quality, transparency support, and browser compatibility. Sending a PNG when a JPG would do bloats email attachments. Serving a JPG on a website when WebP is supported wastes bandwidth and slows page loads. Uploading a GIF to a platform that accepts WebP misses a significant compression improvement.

Converting takes seconds, but picking the right target format requires knowing what each one is designed for.

How to Convert an Image

1. Open the Image Converter.
2. Click Choose File or drag your image onto the upload area.
3. Select the target format from the dropdown (PNG, JPG, WebP, AVIF, or GIF).
4. Adjust the quality slider if converting to a lossy format (JPG, WebP, AVIF).
5. Click Convert and download the result.

The converter shows a file-size preview after conversion so you can compare the output to the original before downloading.

Format Comparison Table

When to Use Each Format

PNG — for graphics, not photos

PNG is lossless, meaning every pixel is preserved exactly. This is ideal for logos, icons, screenshots, and any image with text or sharp geometric edges. The tradeoff is file size — a PNG photo will be much larger than the equivalent JPG. Use PNG when transparency is required or when pixel-perfect accuracy matters more than file size.

JPG — the universal photo format

JPG uses lossy compression that discards fine detail to achieve smaller file sizes. At quality settings of 80–90%, the difference from the original is invisible to most eyes. JPG is the right choice for photographs shared on email, social media, or printed materials. It does not support transparency, so it cannot be used for images that need a transparent background.

WebP — the modern web standard

WebP was developed by Google to replace both PNG and JPG on websites. A WebP image is typically 25–34% smaller than the equivalent JPG at the same visual quality, and smaller than PNG with equivalent transparency. WebP is supported in all modern browsers. It is the best general-purpose format for website images today.

AVIF — the next-generation format

AVIF achieves even better compression than WebP — often 50% smaller than JPG at comparable quality. It supports transparency, HDR color, and wide color gamuts. Browser support is now broad (Chrome, Firefox, Safari 16+, Edge). Use AVIF for high-traffic websites where bandwidth savings compound at scale.

GIF — animation only

GIF is limited to 256 colors and is best avoided for photos or detailed graphics. Its main remaining use is simple animations. For static images, any other format in this list will produce a smaller, better-looking file.

Quality Settings for Lossy Formats

When converting to JPG, WebP, or AVIF, a quality slider lets you balance file size against visual fidelity. Common reference points:

• 90–100% — near lossless; large files. Use for print or archival.
• 75–85% — excellent quality; noticeable size reduction. Best for web photos.
• 50–70% — visible compression at close inspection; significantly smaller files. Good for thumbnails and previews.
• Below 50% — obvious artifacts; use only when file size is the absolute priority.

Privacy: Your Images Never Leave Your Device

All conversion happens in your browser using the Canvas API and built-in codec support. No image data is sent to a server. This makes the tool safe for converting sensitive photos, medical images, or proprietary graphics.

If you need to reduce file size in addition to converting format, the Image Compressor gives you precise control over quality and dimensions with a live before/after preview.