Convert image formats
Makes new pictures in JPEG, PNG or WebP. Up to 20 pictures can be converted together. Your pictures are processed only on this device.
- Free
- No upload
- No sign-up
- Works offline
How to use
Press "Choose files" and pick your pictures. You can choose up to 20 at once.
Choose the format to save (JPEG, PNG or WebP). For JPEG and WebP you can also choose the quality.
Press "Convert". Check the preview, then press "Save" to save the new pictures.
Questions
Are my pictures sent anywhere?
No. Reading your pictures and making the new ones both happen on your device. Nothing is sent out after you choose a picture.
Which format should I choose?
JPEG is a good choice for photos (small, and accepted everywhere). PNG is a good choice for text, drawings and pictures with transparent parts. WebP is often smaller, but some sites do not accept it.
What happens to transparent parts?
PNG and WebP keep them transparent. JPEG has no transparency, so they become white, and the result says so.
Can I convert iPhone photos (HEIC)?
Yes, in browsers that can open HEIC (mainly Safari). Other browsers say that they cannot open it.
Why can I not choose WebP?
Browsers that cannot save WebP do not offer it. Choose JPEG or PNG.
Does the location or other hidden information stay?
No. The new pictures have no location, date or device information. They have no orientation information either: the picture itself is saved upright.
What are the saved files called?
They get names with their number and the new format, such as "converted-1.png", because the original file name often includes the date the photo was taken. Two or more pictures are saved together in one ZIP file.
Can I use it on a phone?
Yes. Phone browsers may not be able to make very large pictures (such as photos from recent phones) at their full size. Then the tool makes the picture as large as that device can handle, and shows the old and the new size. Inside apps such as LINE, saving may not work. If so, open the page again in Safari or Chrome.
Limits
- JPEG and WebP pictures are made again at the quality you choose, so they can be a little rougher than the original. PNG adds no lossy compression (a 16-bit PNG becomes 8-bit, and semi-transparent colors can change a little).
- Moving pictures (GIF, moving WebP or PNG) become a still picture of their first frame.
- Photos with a wide range of colors (such as photos from recent phones) are drawn again in the usual range (sRGB), so very bright colors can become a little softer.
- One file can be up to 50 MB, and a picture up to 50 megapixels. HEIC (the photo format of iPhones) works only in browsers that can open it (mainly Safari).
- We cannot protect against things in your own environment, such as browser extensions.