Image Converter
Convert images between PNG, JPG, WebP and more — batch, private, instant.
How to Use Image Converter
Choose PNG→JPG, JPG→PNG, or "Any→Any" to convert between any image formats. The accepted file types update automatically.
Drag and drop or click to select one or multiple image files. Batch conversion is fully supported.
For JPEG output, set quality (90% recommended). For transparent PNG→JPG, choose a background color to fill transparent areas.
Click "Convert All" and download each file or use "Download All" to save them together.
Features & Benefits
Bidirectional
Convert PNG to JPG, JPG to PNG, or any format to any other format in one tool.
100% Private
All conversion runs in your browser using the Canvas API. Files never leave your device.
Transparency Handling
Choose a background color when converting transparent PNGs to JPG — no black background.
Batch Conversion
Convert dozens of images at once — set your options once and apply to all files.
Supported Formats
Common Use Cases
About Image Converter
PNG vs JPG vs WebP — Choosing the Right Format
Choosing the right image format significantly impacts file size, quality, and compatibility. Here's a complete comparison:
PNG (Portable Network Graphics)
PNG uses lossless compression — the image is reproduced perfectly without any quality loss. Key advantages: supports full transparency (alpha channel), ideal for screenshots and graphics with text, no generational quality loss when re-saved. Disadvantage: larger file sizes than JPEG for photographic content.
JPEG (Joint Photographic Experts Group)
JPEG uses lossy compression that removes some image data to achieve smaller files. At 80–90% quality, the quality loss is usually invisible. Ideal for photographs and complex images. Disadvantage: doesn't support transparency, and quality degrades slightly each time it's re-saved and re-compressed.
WebP (Google's Modern Format)
WebP supports both lossy and lossless compression, plus transparency — making it versatile. WebP files are typically 25–35% smaller than equivalent JPEG files at the same quality, and 26% smaller than PNG. Supported by all modern browsers. The clear winner for web use.
When to Convert PNG to JPG
- The image is a photograph without transparency and you need smaller file size
- The platform only accepts JPEG format
- You need to reduce storage space on a large image library
When to Convert JPG to PNG
- You need to add a transparent background to the image
- You're converting the image to a graphic or logo that will be re-edited
- The platform requires lossless PNG format
Handling PNG Transparency When Converting to JPG
JPG doesn't support transparency — any transparent areas must be filled with a solid color. White (the default in our tool) works for most use cases. For images that will appear on dark backgrounds, choose a matching background color to avoid visible "boxes" around the subject.
Frequently Asked Questions
PNG is a lossless format, while JPG uses lossy compression. When converting PNG→JPG, some quality is lost depending on the quality setting. At 90%+, the difference is usually not visible. Converting JPG→PNG will not improve the JPG's quality — it just changes the container format.
JPG doesn't support transparency. When converting a PNG with transparent areas to JPG, those areas are filled with the background color you choose (default: white). Pick a color that matches your intended background for the best result.
Use PNG for logos, icons, screenshots, graphics with text, or anything requiring transparency. Use JPG for photographs and images without transparency where smaller file size is important. Use WebP for web use — it's smaller than both while supporting transparency.
No server-side limit since all conversion is done locally in your browser. Practical limits depend on your device's RAM. Most devices handle images up to 50MB or 10,000×10,000 pixels without issues.