Image Format Conversion (Image Converter)

What is an image format conversion tool?

The Image Format Converter is a free online tool that converts images such as PNG, JPEG, and WebP to other file formats. You can use it when you want to reduce the file size of images for your website, save PNGs while preserving a transparent background, convert photos to JPEG, or convert images to WebP to reduce data usage.After selecting a file, you can check the original image’s format, file size, width, and height, then choose the output format and any necessary settings to convert it. A key feature is that you can perform these tasks entirely within your browser, without having to launch complex image editing software.

PNG is suitable for logos, diagrams, screenshots, and images with transparent backgrounds. JPEG can save images with a large number of colors—such as photographs—in a relatively small file size, but it cannot preserve transparency, and image quality may degrade with repeated saving.WebP can be used for both photographs and illustrations; it supports transparency while making it easy to keep file sizes small. AVIF offers even higher compression efficiency, but since some browsers and apps do not support image generation or display, you need to check compatibility with your target platforms.

This tool allows you to adjust the image quality of JPEG, WebP, and AVIF files. Increasing the quality setting helps preserve the appearance of the original image, but tends to result in larger file sizes. For images used on websites, please adjust the quality setting to strike a balance with file size while checking how text and outlines appear.Additionally, since you can change the width and height during conversion, you can resize large photos to a size suitable for web publication. Enabling “Maintain Aspect Ratio” automatically adjusts the other dimension when you change the width or height, preventing the image from being unnaturally stretched.

When converting PNG or WebP files—including those with transparency—to JPEG, a background color is required because JPEG cannot preserve transparency. With this tool, you can specify a background color before conversion. The default is white, but you can change it to match the background of the destination page.When converting images in-browser using Canvas, EXIF metadata—such as the capture date and time, GPS location, and camera information—is typically not preserved. While this is an advantage if you want to exclude metadata containing personal information, please use dedicated software for applications where you need to retain the capture information.

Image loading, conversion, previewing, and downloading are performed within the user’s browser. Since image data is not sent to the server for conversion, this design makes it easy to handle personal photos and internal documents. However, on shared devices, please be careful when managing download history and saved files.Additionally, very large images can consume a significant amount of device memory and may cause the browser to become unstable. In such cases, either reduce the width and height of the converted image, or split and resize the original image before using it.

How to Use

1. Drag and drop an image, or select a file using "Select Image."
2. Check the preview, format, file size, width, and height of the original image.
3. Select an output format from PNG, JPEG, WebP, or AVIF.
4. Adjust the image quality, width, height, and background color of transparent areas as needed.
5. When you click "Convert Image," the page will navigate to the results section and display the converted image and its file size.
6. Check the appearance and file size, then save by clicking "Download Converted Image."

Precautions for Use

• For animated GIFs, only the first frame is converted to a still image.
• Since JPEGs cannot preserve transparent backgrounds, they will be filled with the specified background color.
• AVIF support varies by browser. If it is not supported, please select an alternative format such as WebP.
• When converting to Canvas, metadata such as EXIF, GPS, and camera information is not typically preserved.
• Images that are too large may not be processed due to insufficient device memory.
• After conversion, be sure to visually check the text, colors, and transparent areas in the images.

Frequently Asked Questions

Which image formats can be converted?

You can upload common image formats—such as PNG, JPEG, WebP, GIF, and BMP—that are supported by your browser.

What formats can I export to?

You can export to PNG, JPEG, and WebP. AVIF is available if your browser supports it.

Are images uploaded to the server?

No. Images are loaded and converted within the browser; they are not sent to the server for conversion.

Can I change the image quality?

Yes. You can adjust image quality for JPEG, WebP, and AVIF. Since PNG is a lossless format, this image quality setting is not used.

Can I change the image size?

Yes. You can specify the output width and height. You can also scale the image up or down while maintaining the aspect ratio.

Can we keep the transparent background?

This can be maintained with PNG and WebP. Since JPEG does not support transparency, the image will be filled with the specified background color.

Can you convert GIF animations?

You can enter data, but the animation is not preserved, and the first frame is converted to a still image.

Selecting AVIF causes an error.

Your browser may not support AVIF image generation. Please select WebP, JPEG, or PNG.

Will EXIF and GPS data be retained?

This information is not typically retained. Since Canvas regenerates the image, metadata such as the capture date and time and location information is not carried over.

Does conversion always result in a smaller file size?

No. Depending on the image content, output format, image quality, and image size, the file size may increase after conversion.

Can I use this on a smartphone?

Yes. You can select an image in a supported browser, convert it, and save it. However, very large images will use a lot of device memory.

Is it free to use?

Yes. You can use it for free without registering for an account.