How to Convert Images Between JPEG, PNG, and WEBP | All on Your Phone
You saved an image from a website and it won't open because it's a WEBP file, or a PNG image is too large to send. Image format headaches like these can be solved easily with a phone app. This article explains how to convert images between JPEG, PNG, and WEBP.
In short, the free app MediaToolbox lets you freely convert an image's format between JPEG, PNG, and WEBP, solving "won't open" or "too heavy" problems entirely on your phone.
How Are JPEG, PNG, and WEBP Different?
| Format | Characteristics | Best suited for |
|---|---|---|
| JPEG | High compression, small file size — but quality degrades with repeated saves | Saving and sharing photos |
| PNG | Lossless compression preserves quality; supports transparency | Logos, illustrations, screenshots |
| WEBP | Small and high-quality thanks to strong compression; a relatively new format not supported everywhere | Displaying images on websites |
When Would I Need to Convert an Image's Format?
- A WEBP image won't open: older software or some systems don't support WEBP
- A PNG image is too heavy: converting a photo-like PNG to JPEG shrinks the file size
- I want to use it as a transparent image: converting JPEG to PNG lets you use transparency
- I need to match a required format: an application form or similar requires a specific image format
How Do I Convert an Image in MediaToolbox?
- Open MediaToolbox and select the image format conversion feature
- Choose the image you want to convert
- Select an output format from JPEG, PNG, or WEBP
- Running the conversion saves it to your device in the format you specified
What Else Can MediaToolbox Do Besides Format Conversion?
MediaToolbox handles more than format conversion — you can also resize an image by specifying width and height. It also supports compressing video file size, converting to MP4, extracting audio (M4A) from video, and converting between PDF and images. Every "I want to convert this" moment for images, video, audio, and PDFs can be handled with this one app.
Summary
Image format troubles — whether it won't open or it's too heavy — can both be solved quickly with a phone app, no matter which. Use JPEG, PNG, and WEBP as appropriate for your needs, and handle images comfortably.
MediaToolbox
A simple multimedia conversion tool for video, images, audio, and PDF — all in one. Free.
📲 Download for freeFrequently Asked Questions
Q. What's the difference between JPEG, PNG, and WEBP?
A. JPEG is suited to photos and keeps file size small; PNG preserves transparency and sharp text edges; WEBP offers high compression with a small file size while keeping image quality high.
Q. Why won't a WEBP image open?
A. WEBP is a relatively new format, so some older software or systems don't support it. Converting it to JPEG or PNG may let it open.
Q. Does converting an image reduce its quality?
A. Converting to a compressed format like JPEG can cause some quality loss, but a lossless format like PNG preserves quality almost entirely.
Q. Is the capture date and time preserved when converting?
A. Yes. MediaToolbox's conversion preserves metadata (EXIF information) like capture date and time, so you can convert just the format without disrupting your photo organization.
Q. Can I convert multiple images at once?
A. Yes, selecting multiple images when choosing which to convert lets you convert them all to the same format at once.