JPG is the most widely used lossy format for photos. JPG opens in most environments, but another format such as GIF may suit some uses better.
GIF is limited to 256 colors, and synonymous with short moving images. When you convert JPG to GIF, you get a format that supports transparency and the file grows. See the comparison below for what changes.
This converter reads the file itself to confirm it is JPG, then converts it to GIF right in your browser. Your image is never uploaded.
JPG vs GIF: what's the difference?
| Item | JPG | GIF |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparent background | No | Yes |
| Animation | No | Yes |
| Introduced | 1992 | 1987 |
| Support in programs and upload forms | nearly everywhere | nearly everywhere |
| Shown directly in browsers | Yes | Yes |
| Photo file size (JPG = 1) | baseline (1×) | about 2.5× |
What is JPG?
JPG (JPEG) is a lossy format standardized in 1992. It drops information the human eye is less sensitive to, making photos very small. It is the format cameras and smartphones save by default, so it is the one you meet most often.
What is GIF?
GIF is one of the oldest web image formats, created in 1987, and can use only up to 256 colors per image. The compression itself is lossless, but reducing the colors to 256 makes photos look visibly coarse.
What changes when you convert JPG to GIF
Converting doesn't add a transparent background
JPG has no transparency information, so converting to GIF keeps the background as it is. To remove a background you need a separate background-removal tool.
Quality doesn't improve, but it doesn't get worse either
Information lost when JPG was saved can't be recovered. GIF is lossless, so it keeps the image exactly as it is now and later edits and saves add no further degradation. File size will grow, though.
GIF has no quality setting
GIF is lossless, so the quality slider doesn't apply. Instead, when converting from JPG you can manage file size by resizing (exact width and height, or a percentage).
How the file size changes
For the same photo, GIF is much larger than JPG (roughly 3× or so). This is for photos; for simple images such as logos and screenshots, PNG can actually come out smaller.
When to convert
- You must upload a still image to an old board or system that only accepts GIF
- You're preparing an image for typical GIF uses (simple logos and pixel art, uploading still images to legacy systems that only accept gif)
- You want to tidy a JPG file into a format that's easier to edit or archive