Image Format Converter

What this tool does

Image Format Converter turns batches of images into the format you need, for example PNG to JPG, JPG to WebP or WebP to PNG. Set quality, choose the fill colour for transparent areas and download everything as a ZIP.

Different formats suit different jobs. JPG is universal for photos, PNG keeps sharp edges and transparency for graphics, WebP and AVIF give much smaller files for the web, and BMP is still requested by some older software. A file in the wrong format can be rejected by an upload form or be needlessly large.

This converter decodes each file with your browser and re-encodes it with the canvas encoder for the target format. Lossy formats use your quality setting; PNG and BMP are lossless. Because JPG and BMP have no alpha channel, transparent pixels are composited over a colour you choose instead of turning black. AVIF and WebP appear in the list only if your browser can encode them.

How to use Image Format Converter

1. Add images by dropping them, browsing, pasting or using the sample.
2. Choose the Output format: JPG, PNG, WebP, AVIF or BMP.
3. For JPG, WebP and AVIF, set the Quality slider; 80-90% is a good default.
4. If converting transparent images to JPG or BMP, pick the colour for transparent areas.
5. For SVG files, set the SVG render width to control the pixel size.
6. Press Convert, then download files one by one or as a ZIP.

Tips for better results

• Convert PNG photos to JPG or WebP for huge savings; keep logos, icons and screenshots as PNG or lossless-looking WebP.
• AVIF usually gives the smallest file, but encoding is slower and older software may not open it.
• HEIC photos from iPhones can only be decoded in browsers that support HEIC, such as Safari; elsewhere export them as JPG first.
• Turn on Skip files already in the target format when processing mixed folders.

Common use cases

• Converting WebP images saved from websites into JPG so older apps can open them.
• Turning PNG screenshots into compact WebP files for a blog.
• Rasterising SVG icons into PNG at a specific width.
• Producing BMP files for legacy embedded displays or industrial software.

Common mistakes to avoid

• Converting a JPG to PNG and expecting better quality; PNG only preserves what is already there, at a much larger size.
• Converting transparent logos to JPG and losing the transparency; use PNG or WebP instead.
• Assuming animation survives: animated GIF and WebP files are converted from the first frame only.