Image Converter Tool
Supports JPEG / PNG / WebP / AVIF - Browser-Based
Drag and drop images here
or click to select files
No images selected yet. You can convert multiple images at once.
No settings are required for this format
List of loaded image files
How to Use the Image Converter Tool
How to Use the Tool
- From "Select Files", choose the images you want to convert. (You can select multiple images.)
- Select the "Output format." WebP or AVIF is recommended for faster websites and smaller image file sizes.
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Adjust the quality of the converted image using the "Quality" slider.For guidance on the value to set, please refer toQuality Setting Guide.
* Adjustable only when JPEG, WebP, or AVIF is selected as the output format.
- If needed, enable "Keep Exif metadata" and click "Convert and Download."
Great for These Cases
- Want to reduce transparent PNG size: Convert to WebP or AVIF while preserving background transparency to significantly reduce file size.
- Want to improve site speed: Using WebP or AVIF formats makes websites lighter, helping improve Google PageSpeed Insights and Core Web Vitals.
- Want to unify formats in bulk: Convert large numbers of JPEG and PNG files to next-generation formats all at once.
- Want to keep Exif metadata too: Save in the format you need while preserving shooting information.
Quality Setting Guide
For each image format, the following ranges are good balance points between visual quality and file size. Quality increases as the value approaches 100, but file size also increases.
- JPEG: Around "80-85" is generally recommended. Below this range, edge noise tends to become noticeable.
- WebP: Around "75" can maintain sufficient quality. Even with lower values than JPEG, quality degradation can be better controlled.
- AVIF: Around "60" is efficient. Thanks to its advanced compression algorithm, smooth gradients are easier to preserve even at lower values.
About WebP and AVIF Image Formats
Why Are WebP and AVIF Used on Websites?
On modern websites, lightweight images are one of the keys to smooth display. WebP and AVIF, which you can create with this tool, can reduce data size while maintaining image quality compared with traditional JPEG and PNG.
Reducing loading stress not only improves usability for visitors but can also lead to better evaluations from search engines.
WebP or AVIF: Which Should You Use?
On recent websites, WebP has become the standard choice for reducing image size. Browser support is very high at around 96%, so choosing WebP generally avoids issues like images not displaying.
AVIF, on the other hand, has support of around 93%, slightly behind WebP, but users on modern smartphones and PCs can view it without problems. Its biggest advantage is extremely small file size. While keeping quality similar to WebP, AVIF can often make files an additional 20-30% smaller. It is also less prone to graininess after compression and tends to produce smoother results.
If your priority is broad audience compatibility, WebP is the stable choice. If you want to optimize for modern environments and maximize size and speed improvements, AVIF is recommended.
Supported Formats
| Format | Feature |
|---|---|
| WebP | Mainstream format on today's web. It offers high compression with transparency support, and browser support is broad at around 96%. Unless there is a specific reason otherwise, WebP is recommended. |
| AVIF | High-performance next-generation format. It can reduce size by about 20-30% more than WebP and often provides smoother image quality. Ideal when you want the smallest possible files and maximum site-speed gains for modern environments. Supports transparency as well. |
| PNG | Lossless high-quality format. Suitable for diagrams, logos, screenshots, and other images where text and lines need to remain crisp. Supports transparency. |
| JPEG | Exceptional compatibility. A standard format used for over 30 years. Use it when compatibility is the top priority, such as very old browsers, specific apps, or print purposes. |