How to Convert Image Format Online (Free)
Need to convert a PNG to JPG, swap a WebP for a PNG, or save a BMP as a modern format? Image format conversion is a common task — this guide shows you how to do it in seconds, directly in your browser, with no upload to any server.
Supported Formats
- PNG — lossless, supports transparency. Best for screenshots, logos, icons.
- JPEG — lossy, no transparency. Best for photographs. Smaller files than PNG.
- WebP — modern format from Google. Smaller than both PNG and JPEG at similar quality. Supported in all modern browsers.
- BMP — uncompressed bitmap. Rarely needed today, but useful for legacy software compatibility.
Step-by-Step Instructions
Open the Image Converter
Go to the Image Converter tool. It works in any modern browser without plugins.
Upload your image
Click the upload area or drag and drop your source image. PNG, JPG, WebP, BMP, and GIF are all accepted as input.
Select the output format
Use the format selector to pick your target format: PNG, JPEG, WebP, or BMP. The choice appears immediately below the preview.
Preview the converted image
A preview of the converted image updates in real time. For JPEG and WebP, the default quality is 0.92 (92%) which preserves visual quality while reducing file size.
Download
Click Download. The converted image is generated in-browser and saved to your device. The filename reflects the new format automatically.
PNG vs JPG vs WebP — Which to Choose?
- Keep transparency → PNG. JPG and WebP (at lossy quality) do not support transparent backgrounds. If your image has a transparent background, PNG is the safe choice.
- Photographs for the web → WebP or JPEG. WebP gives 25–35% smaller files than JPEG at equal quality. Use WebP for modern web projects; fall back to JPEG if you need broad compatibility.
- Icons and logos → PNG or SVG. For crisp edges at any size, vector SVG is ideal. For raster logos, PNG preserves sharp edges better than JPEG.