How to convert images online
This converter runs entirely in your browser using the Canvas API. Drop one or more images, choose an output format, fine-tune quality when the target format supports compression, then download the result. Nothing leaves your device.
- Add images — drag files onto the drop zone or click to browse. JPG, PNG, WebP, GIF, and BMP are supported.
- Pick an output format — select JPG, PNG, WebP, or BMP from the format dropdown.
- Set quality — for JPG and WebP, move the quality slider (higher = larger file, sharper detail).
- Convert & download — click the primary action to process and save each converted file.
When to convert image formats
Different formats trade off file size, transparency, animation, and compatibility. Choosing the right output keeps pages fast and assets easy to share.
| Format | Best for | Transparency | Typical compression |
|---|---|---|---|
| JPG / JPEG | Photos, gradients, social previews | No | Lossy — adjustable quality |
| PNG | Logos, UI graphics, screenshots | Yes (alpha channel) | Lossless — larger files |
| WebP | Modern web images | Yes | Lossy or lossless; often smaller than JPG/PNG |
| BMP | Legacy workflows, uncompressed archives | Varies | Uncompressed — very large |
JPG vs PNG vs WebP
JPG excels at photographs because it discards subtle detail humans rarely notice. Use it when you do not need transparency and want the smallest reasonable file for a photo.
PNG preserves every pixel and supports transparent backgrounds. Icons, text overlays, and flat graphics stay crisp. File sizes are larger than JPG for photos.
WebP is a modern format supported by all major browsers. It often delivers smaller files than JPG or PNG at similar visual quality and can carry transparency — a strong default for web performance when compatibility is not a concern.
Quality slider explained
For lossy formats (JPG and WebP), the quality setting maps to encoder compression. Around 80–92% is a practical range for web photos: visibly sharp with meaningful size savings. PNG and BMP ignore quality because they encode without that lossy step (PNG may still be re-encoded losslessly through the canvas).
Privacy and batch conversion
Because processing happens on your computer, sensitive screenshots, ID scans, or client assets never travel over the network. You can queue multiple files when the drop zone accepts more than one image — each converts with the same output settings you choose.
Limitations to know
- Animated GIF — converting to a static format exports the current frame, not the full animation.
- CMYK print files — browser canvas works in RGB; color may shift slightly for print-ready sources.
- Very large images — extremely high resolutions may hit browser memory limits; resize first if conversion fails.