Image Converter
Convert images between WebP, JPEG, and PNG formats directly in your browser with transparency options and batch ZIP download.
Choose a format your destination accepts
Use JPG for photographs when the destination requires it, PNG when you need transparency, or WebP when it is supported. Check the converted image before replacing the original. Converting formats cannot restore detail already lost.
Example: convert several images to WebP
You have photos and graphics for a website that supports WebP. Convert them together, then download the results individually or as a ZIP.
- Add your images: Choose up to 50 JPG, PNG or WebP files. A batch can contain at most 100 MB and 48 megapixels in total.
- Choose the output format: Select WebP, JPEG or PNG. The same format applies to the whole batch. Choose a quality level for JPEG or WebP.
- Set a JPEG background: JPEG cannot keep transparency. If your input has transparent areas, choose the colour that should appear behind them.
- Convert, check and download: Run conversion and compare the displayed sizes. Download a file on its own, or get all ready files as a ZIP. Open the results before replacing your originals.
Format Compatibility, Transparency, and File Size
Converting between formats involves trade-offs. Converting a transparent PNG to JPEG requires flattening the alpha channel onto a solid background color. Conversely, converting a compressed JPEG into PNG will not improve quality and may result in a larger file, as PNG uses lossless compression designed for sharp line art rather than photographic gradients. WebP supports both lossy compression and alpha transparency, making it versatile for modern web use.
Common questions
Why is my converted PNG file larger than the original JPEG?
PNG stores pixels without adding further quality loss, but photographs often take more space in PNG than in JPEG. Converting a JPEG to PNG cannot recover details that were already lost. Keep JPEG when you need a small photograph and your destination accepts it.
How does batch conversion work?
You can queue up to 50 files. The browser processes each file sequentially in memory. If an individual file fails due to corruption, the remaining files continue converting, and all successful outputs can be downloaded together as a standard ZIP archive.
Does the ZIP generator require external software?
No. The ZIP file is generated entirely within your browser using standard PK archive headers and CRC32 checksums, compatible with Windows, macOS, and Linux built-in extraction tools.
Are my converted files uploaded to a server?
Files selected from your device stay in this browser tab for processing; we do not upload them to our server. If you choose Google Drive import, Google sends the selected files directly to your browser after you grant access.
What should I check after converting an image for a form?
Open the saved file and check its background, dimensions, readability and size range. Conversion does not satisfy every upload requirement by itself. Follow our image and PDF preparation guide for the remaining checks.