Image Converter
Convert images between JPG, PNG, and WebP without sending them to a server.
Upload images
Your files stay on your device. Nothing is uploaded.
Supported formats
- Input: JPG/JPEG, PNG, and WebP
- Output: JPG, PNG, or WebP
- Up to 20 images per batch
Limits and behavior
- Each image can be up to 30 MB.
- JPG output fills transparent areas with white; PNG and WebP keep transparency.
- Lossy output uses the quality you choose; PNG output is lossless.
- HEIC and GIF files are not supported.
Processed on your device
Your files are read and processed in this browser. Nothing is uploaded, stored, or sent to FileOne. Read the privacy policy
How to convert an image
- 01
Choose one or more JPG, PNG, or WebP images.
- 02
Pick the output format and, for JPG or WebP, a quality level.
- 03
Convert and download the results.
Image conversion questions
Are my images uploaded?
No. Conversion runs in your browser with the Canvas API. Your files never leave your device.
Which formats are supported?
JPG/JPEG, PNG, and WebP. HEIC and GIF files are not supported.
Will transparency be preserved?
PNG and WebP preserve transparency. JPG does not, so transparent areas become white.
How many images can I convert at once?
Up to 20 images per batch, with a 30 MB limit per image.
Does converting change the pixel dimensions?
No. The pixel dimensions stay the same. The file size can change because the output format and quality differ.