A website gives you WebP. You need JPG.
Create a real JPEG for a form, document or app. Renaming .webp to .jpg does not convert the file.
IMAGE CONVERTER · MAC · IPHONE · IPAD
Your images. The format you need.
Convert pictures on Mac, iPhone and iPad — in Safari or from your own files. Choose JPEG, PNG, WebP, BMP, TIFF, HEIC or AVIF in the app. Your images stay on your device.
- Mac · iPhone · iPad
- On-device conversion
- No account needed
One app. Safari and your own files.
ImageCaptain is an image converter for Mac, iPhone and iPad with a Safari extension. Convert a picture from a webpage, open a local file, use a Finder Quick Action on Mac or send a photo through the Share menu on iPhone and iPad. Conversion runs locally, without uploading images to an online converter.
IMAGECAPTAIN → YOUR FILE
The picture is right. The format isn’t.
Make a photo easier to share.
Open a HEIC or HEIF image in ImageCaptain, choose JPEG and save a new copy. Keep the original for later.
Keep a transparent background.
Choose PNG, WebP or TIFF for an image with transparency. JPEG, BMP and HEIC use a white background.
MAC · IPHONE · IPAD
Already have the image? Start with the file.
Use ImageCaptain outside Safari too. Open one image, select an available format and save a converted copy without replacing the original.
Mac: Finder Quick Actions and Open With
- In Finder, select an image. Right-click → Quick Actions → ImageCaptain, or use Open With → ImageCaptain.
- Choose an output format in the converter. You can also open a file directly in the ImageCaptain app.
- Click Save, choose a destination and confirm. If the Quick Action is hidden, enable it in System Settings.
iPhone & iPad: Photos, Files and Share
- In Photos or Files, select one image and open Share → ImageCaptain. Use More if it is not listed.
- Choose the output format. You can also open a saved image directly in the app.
- Tap Save, choose a folder in the system dialog and confirm. Your original image stays unchanged.
MAC · IPHONE · IPAD
In Safari on Mac, iPhone and iPad.
Mac
Mac: right-click and save.
In Safari on Mac, ImageCaptain adds image-format commands to the picture’s context menu. Save to Downloads or open the image in the editor first.
- Install ImageCaptain and enable it in Safari → Settings → Extensions.
- Open a webpage, allow the required website access, then right-click the image and choose ImageCaptain.
- Choose JPEG, PNG, WebP, BMP or TIFF. The converted file goes to Downloads. If right-click is blocked, use the extension’s image picker.
macOS 13.0+
Apple’s Safari extension guide ↗
iPhone · iPad
iPhone & iPad: tap to choose.
Select a picture on a Safari page, convert it in the editor and save it to the folder you choose.
- Enable ImageCaptain in Settings → Apps → Safari → Extensions. On older iOS versions, Safari is directly in Settings.
- In Safari’s page menu, open ImageCaptain, choose the page-image picker and tap the picture. Allow access if asked.
- Choose a format, convert and tap Save file → Save to Files. Select a folder and save.
iOS 16.0+ · iPadOS 16.0+
Apple’s Safari extension guide ↗
JPEG · PNG · WEBP · BMP · TIFF · HEIC · AVIF
Choose the format for your next step.
The app works with JPEG, PNG, WebP, BMP, TIFF, HEIC/HEIF, AVIF and GIF images. JPG and JPEG are two names for the same format.
Open in the appJPEG · PNG · WebP · BMP · TIFF · HEIC/HEIF · AVIF · GIF
Save asJPEG · PNG · WebP · BMP · TIFF · HEIC · AVIF
| Output | Useful for | Transparency |
|---|---|---|
| JPEG / JPG | Photos, forms and widely compatible files | White background |
| PNG | Graphics, screenshots and lossless detail | Preserved |
| WebP | Lossless images for web workflows | Preserved |
| BMP | Software that specifically needs bitmap files | White background |
| TIFF | Image workflows that require TIFF | Preserved |
| HEIC | Photos for apps that accept HEIC | White background |
| AVIF | Image workflows that accept AVIF | Preserved |
Animated inputs export one still frame. Conversion cannot restore missing detail. Original EXIF/GPS metadata is not copied.
WEBP → JPG / PNG
How to convert WebP to JPG or PNG in Safari
Change the image format, not just its filename. ImageCaptain creates a newly encoded file.
- On Mac, right-click the picture. On iPhone or iPad, select it with ImageCaptain in Safari.
- Choose JPEG for compatibility or PNG to keep transparency, then convert.
- Save to Downloads on Mac or use Save file → Save to Files on iPhone and iPad.
Your image stays on your device.
There is no account or conversion-upload service. Local-file conversion does not need Safari website access. Loading a web image may request the original file from its host, without cookies or a referrer; that host receives the request.
Privacy Policy ↗A few things worth knowing.
Large local images are resized to the dimensions shown before saving. Originals remain untouched. SVG is not supported, and animated images export one frame. Protected web images may be inaccessible. Convert and reuse only images you have permission to use.
Support ↗FAQ
Useful answers before you start.
Does ImageCaptain work on Mac too?
Yes. Use it in Safari, open an image in the Mac app, choose Open With in Finder or run the ImageCaptain Quick Action.
How do I convert HEIC to JPG?
Open the local HEIC or HEIF image in ImageCaptain, choose JPEG and save a new file. You can start from Finder on Mac or Share in Photos or Files on iPhone and iPad.
Can I use it in Safari on iPhone and iPad?
Yes. Enable the Safari extension, select a webpage image, convert it in the editor and save through the system file menu.
Do I have to upload my pictures?
No. Conversion runs on your device. Selecting a web image can load its original from the website, but it is not uploaded to a conversion server.
Can I open TIFF, AVIF, GIF or SVG?
The native app accepts TIFF, AVIF and GIF along with its other supported image formats. SVG is not supported. An animated source produces one still frame.
What if the Finder Quick Action or Share option is missing?
Enable the Mac extension in System Settings, or use More in the iPhone/iPad Share menu. You can also open the image directly in the ImageCaptain app.
A picture from anywhere.A format that fits.
Convert Safari images and local files on Mac, iPhone and iPad.
Download · App Store