You export an image and get asked: JPG, PNG, or WebP? Most people just pick whatever is default and move on. But that one choice quietly decides how sharp your image looks, how big the file is, whether it keeps a transparent background, and how fast your web page loads. Pick wrong and you end up with a blurry logo, a 5 MB photo that will not attach to an email, or a missing background.
The good news is the rules are simple once you understand what each format is actually good at. This guide breaks down JPG vs PNG vs WebP in plain language, tells you exactly when to use each one, and shows you how to convert between them for free.
The quick answer
If you want the short version: use JPG for photos, use PNG when you need a transparent background or crisp text and lines, and use WebP when you are putting images on a website and want them to load fast. The rest of this guide explains why, and covers the edge cases where the quick answer is not enough.
What is a JPG?
JPG (also written JPEG) is the format built for photographs. It uses lossy compression, which means it throws away small details your eye is unlikely to notice in order to make the file much smaller. That is why a detailed photo saved as JPG can be a fraction of the size of the same photo saved as PNG.
The tradeoff is that JPG does not support transparency, and if you compress it too hard you start to see blocky artifacts, especially around sharp edges and text. JPG is perfect for camera photos, complex images with lots of colors, and anything where a slightly smaller file matters more than pixel-perfect edges.
- •Best for: photographs, complex or colorful images, email attachments, and social media posts.
- •Avoid for: logos, screenshots with text, or anything needing a transparent background.
What is a PNG?
PNG uses lossless compression, so it keeps every pixel exactly as it was. Nothing is thrown away. That makes PNG the right choice when sharpness matters: logos, icons, screenshots, diagrams, and any image with hard edges or text. PNG also supports transparency, so you can have a logo with no background that sits cleanly on any color.
The downside is size. Because PNG keeps all the detail, a photo saved as PNG can be several times larger than the same photo as JPG. So PNG is excellent for graphics and transparency, but a poor choice for large photographs where that extra size buys you nothing you can actually see.
- •Best for: logos, icons, screenshots, graphics with text, and images that need a transparent background.
- •Avoid for: large photographs, where it creates needlessly huge files.
What is WebP?
WebP is the modern format built by Google specifically for the web. Its trick is that it can do both jobs: it supports lossy compression like JPG and lossless with transparency like PNG, and at similar quality it usually produces noticeably smaller files than either. A WebP image can often be 25 to 35 percent smaller than the same JPG, and much smaller than a PNG.
Smaller files mean faster page loads, which visitors and search engines both reward. Every current browser supports WebP now, so for images you are putting on a website, WebP is usually the smartest choice. The main time to avoid it is when you are sending a file to someone who needs to open it in older software that may not recognize WebP, in which case JPG or PNG is safer.
- •Best for: images on websites and web apps where load speed matters.
- •Avoid for: sharing with older software or workflows that do not support WebP yet.
JPG vs PNG vs WebP: side by side
- •Photos: JPG is the classic choice, WebP is smaller at the same quality. PNG is overkill.
- •Logos and graphics with transparency: PNG is the safe standard, WebP can do it smaller for web use.
- •Screenshots and text: PNG keeps text crisp. JPG can make text look fuzzy.
- •Website speed: WebP wins, then JPG, with PNG usually the largest.
- •Universal compatibility: JPG and PNG open everywhere, including old software. WebP is web-first.
How to convert between JPG, PNG, and WebP
Once you know which format you need, converting is quick and free. Craftora’s converter runs entirely in your browser, so your images are never uploaded to a server.
Open the free Image Converter →For example, convert a heavy PNG photo to JPG or WebP to shrink it for email, or convert a JPG logo to PNG if you need to work with transparency. You can convert many images at once and download them together.
Reduce file size without changing format
Sometimes you do not need a different format, you just need the file to be smaller. If a JPG photo is too big to upload or email, compressing it keeps the same format while cutting the size, and you control how much quality to keep.
Open the free Image Compressor →And if the image is simply larger in dimensions than you need, for example a 4000 pixel wide photo going onto a website, resizing it down is often the biggest single size saving you can make.
Open the free Image Resizer →Which format should you use? A simple checklist
- •It is a photo going in an email or a post: use JPG, or WebP if the recipient supports it.
- •It is a logo, icon, or screenshot: use PNG to keep it sharp, or when you need transparency.
- •It is going on a website and speed matters: use WebP.
- •You need it to open in older software: stick with JPG or PNG.
- •It is going to be a website icon: generate a proper favicon set instead of using a single image.
The bottom line
JPG, PNG, and WebP are not better or worse than each other, they are built for different jobs. JPG is for photos, PNG is for graphics and transparency, and WebP is the modern all-rounder for the web. Match the format to the job and your images will look great and load fast. When you need to switch between them, Craftora’s free browser-based tools make it a few clicks, with nothing uploaded and no watermarks.