Image format converter
Convert HEIC, JPG, PNG, WebP, and AVIF images to JPG, PNG, WebP, or AVIF in your browser without uploading originals.
Files never leave this device.
How to use it
- 1
Add your images
Choose files or drop them into the work area. HEIC, JPG, PNG, WebP, and AVIF are accepted, and several files can be added at the same time.
- 2
Pick the output format
Select JPG for the widest compatibility, PNG for lossless graphics, WebP for small web files, or AVIF for the smallest modern output. Adjust quality for the lossy formats.
- 3
Run the conversion
Press Convert and watch each file change from waiting to done. The size and pixel dimensions of every result appear next to its name.
- 4
Download the results
Save a single converted file, or download all finished files together as one ZIP package when you converted more than one image.
Common use cases
Security and privacy
Your pictures stay in the browser
Conversion runs entirely on your device. Frisbly does not send image bytes to a server, does not create an upload route for your files, and does not need an account. The HEIC reader is downloaded only when you choose a HEIC file, and it runs locally like every other step. Closing the tab clears the selected files and results.
Supported inputs and outputs
Supported inputs and outputs
- Inputs: HEIC, JPG, PNG, WebP, and AVIF, up to 30 MB per file.
- Outputs: JPG, PNG, WebP, and AVIF with adjustable quality.
- Up to 30 files per batch with a single ZIP download.
- Transparent areas become white when saving as JPG.
FAQ
Are my images uploaded when I convert them?
No. Every step runs in your browser, so the pictures are never sent to a Frisbly server.
Why can I convert HEIC here?
A small decoder is loaded in your browser when you pick a HEIC file. It reads the picture locally and passes it to the same converter used for the other formats.
Which output format should I choose?
Choose JPG for compatibility, PNG when you need sharp edges or transparency, WebP for compact web images, and AVIF when file size matters most and the target supports it.
Will conversion keep the photo metadata?
No. The converted copy is drawn again from the pixels, so camera details and location tags in the original are not carried over.
Is there a limit on how many files I can convert?
You can add up to 30 files at a time, each up to 30 MB. Very large pictures above 40 megapixels are rejected to protect your browser memory.