🔄 Image Converter
Convert images between JPG, PNG and WebP directly in your browser. This image converter is useful when you need a different image format for websites, documents, social media, email, or general file sharing.
The converter keeps the original image dimensions while changing its file format. For JPG and WebP, you can also choose the output quality to balance image appearance and file size.
What Is an Image Converter?
An image converter changes an image from one file format into another. For example, you can convert a JPG photograph into WebP for a website, or convert a WebP image into PNG when you need a more widely supported or lossless format.
Conversion does not necessarily mean that the image dimensions will change. This tool keeps the original width and height and creates a new file using the output format you select.
How to Convert an Image
- Select an image from your device.
- Choose JPG, PNG, or WebP as the output format.
- If using JPG or WebP, adjust the quality setting if necessary.
- Click Convert Image.
- Review the converted image and file-size information.
- Click Download Converted Image to save the new file.
JPG vs PNG vs WebP
Choosing the right format depends on what the image contains and where you intend to use it.
| Format | Best For | Important Characteristic |
|---|---|---|
| JPG / JPEG | Photographs and complex images | Usually produces relatively small files but uses lossy compression. |
| PNG | Logos, screenshots, graphics and images requiring transparency | Lossless format that can preserve transparency. |
| WebP | Websites and modern web applications | Often provides a good balance between quality and file size. |
Understanding Image Quality
The quality slider controls how strongly the browser compresses formats that support a quality parameter. Higher values generally preserve more visual detail but can create larger files. Lower values can reduce file size at the expense of image quality.
A setting around 80–90% is often a useful starting point for photographs. You can experiment with different values when file size is important.
PNG does not use the quality slider in the same way as JPG or WebP. Changing the slider therefore does not provide the same compression control for PNG output.
When Should You Convert an Image?
- Convert photographs to JPG when broad compatibility and smaller files are important.
- Convert website images to WebP when your website workflow supports the format.
- Use PNG for screenshots, logos and graphics where lossless output or transparency matters.
- Convert an image when a website, application or document requires a particular format.
- Create a different copy while keeping your original image unchanged.
Image Conversion vs Image Resizing
These are two different operations. Image conversion changes the file format, such as JPG to WebP. Image resizing changes the pixel dimensions, such as 4000 × 3000 pixels to 1200 × 900 pixels.
This converter keeps the original dimensions. If you need to reduce the width or height of an image, use an image resizing tool instead.
Tips for Better Results
- Keep your original image so you can return to the highest-quality source when needed.
- For photographs, compare JPG and WebP file sizes at similar visual quality.
- Use PNG when transparency is important.
- Avoid repeatedly converting the same image between lossy formats because quality can gradually decrease.
- If a converted file is still too large, resizing the image dimensions may provide a much larger reduction than changing formats alone.
Privacy and Local Processing
Resouria performs this conversion in your browser. The selected image is read by your device and rendered through the browser's Canvas API to produce the requested output file.
Because the conversion is performed locally, the image does not need to be uploaded to a Resouria conversion server. Nevertheless, use caution when working on shared or public computers because downloaded files and browser data may remain on the device.
Limitations to Keep in Mind
- Very large images may require substantial browser memory and may fail on devices with limited resources.
- JPG cannot preserve transparent backgrounds. Transparent areas are rendered against a white background when creating JPG output.
- Animated GIFs are rendered as a single image frame rather than being converted as an animation.
- EXIF metadata, camera information and other original file metadata are not guaranteed to be preserved.
- Converting an image does not automatically sharpen, enhance or upscale it.
- The final file size depends on the original image, dimensions, format and compression settings.