Image Format Converter
Convert images to PNG, JPG, WebP, and other browser-supported formats.
About This Tool
The Image Format Converter tool converts multiple image files — such as PNG, JPG, WebP, GIF, BMP, and AVIF — into the format you want in one pass. You can add several images at once and choose the output format (WebP, PNG, JPG, AVIF, BMP), quality, and how transparent backgrounds are handled. It is useful for comparing file formats and sizes before and after conversion, then downloading results individually or all at once.
How to Use
Add image files
Add the image files you want to convert. You can select multiple files at once and review each image's name, resolution, file size, and original format.
Set the output format and options
Choose the output format from WebP, PNG, JPG, AVIF, or BMP, and configure the quality, transparency handling (keep or flatten), and file name rule.
Convert and download
Press Convert Images to convert all selected files to the chosen format. When done, download each file individually or save them all at once with the download-all button.
Key Features
Batch conversion
Add multiple image files at once and convert them all to the same output format in a single run.
Multiple output formats and quality
Choose from WebP, PNG, JPG, AVIF, or BMP, and adjust the quality level (low, recommended, or high) to suit your needs.
Transparency handling
Keep the transparent areas in formats that support transparency such as PNG, WebP, and AVIF, or choose flatten to fill those areas with a color of your choice.
Per-file status and size comparison
See each file's pending status before conversion, then compare the original and result formats, sizes, and the size change ratio after conversion.
Individual and batch download
Save only the results you need individually, or download all converted images at once as a ZIP file.
In-browser processing
Your images and conversion results stay in your browser — nothing is sent to a server.
Use Cases
Preparing web-friendly images
Convert PNG or JPG images to WebP to reduce page weight and improve loading speed.
Preparing images with transparency
Convert logos, icons, and QR codes that need transparent backgrounds to PNG or WebP.
Adding a background for JPG
Apply a white or custom background when converting a transparent PNG to a format that does not support transparency, such as JPG.
Unifying mixed image formats
Standardize photos, screenshots, and design files in different formats into one format for easier management.
Preparing documents and presentations
Convert images to the format supported by the program or document you plan to use.
Frequently Asked Questions
Which image formats can I convert to?
PNG, JPG, WebP, GIF, BMP, and AVIF images are accepted as input, and you can convert to WebP, PNG, JPG, AVIF, or BMP.
Can I convert multiple images at once?
Yes. Add multiple image files and convert them all to the same output format in a single operation.
What does keeping transparency do?
It preserves the transparent areas of the original image. This is available for output formats that support transparency, such as PNG, WebP, and AVIF.
When should I use flatten?
Use it when you want to replace transparent areas with a specific color, including when converting to a format that does not support transparency.
How do I set the background color?
When transparency handling is set to flatten, a background color input appears. Enter a HEX value to specify the color you want.
Are the image dimensions or resolution changed?
No. This tool changes the image format, quality, and transparency handling, and there is no resizing option, so the original width and height are kept.
Can the quality degrade after conversion?
Lossless formats like PNG change quality very little. JPG, WebP, and AVIF may differ during compression, so you can adjust the quality option (low, recommended, or high).
Does converting to WebP always reduce the file size?
Not always, but for many photos and web images it produces a smaller size than PNG or JPG. You can check the size and reduction ratio before and after conversion in the results list.
How is the converted file named?
Depending on the file name rule, you can keep the original name, append the format (for example, sample-webp.webp), or add "converted" (for example, sample-converted.webp).
Can I save all results at once?
Yes. Use the download-all button to save every converted file bundled into a single ZIP archive.
Are the original images changed?
No. The originals stay unchanged, and new image files in the selected format are created.
Is my image sent to a server?
No. All processing happens locally in your browser. Your images and conversion results are never transmitted to a server.
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