Convert JPG to GIF
Output is typically about 72% larger.
- Files stay on your device
- Free, no sign-up
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Will converting JPG to GIF make the file smaller?
Usually, yes. A 12-megapixel photo is around 3.2 MB as JPG and around 5.5 MB as GIF — about 72% larger. Because GIF is lossless the result depends entirely on the image content — flat colour and text compress far better than photographic detail.
Does converting JPG to GIF lose quality?
No. GIF is lossless, so every pixel decoded from your JPG file is stored exactly. Note that any compression artefacts already baked into the JPG original are preserved too — converting to a lossless format cannot recover detail that was thrown away earlier.
Why does GIF look posterised?
GIF allows a maximum of 256 colours per frame. A photograph contains far more, so the encoder has to pick a palette and approximate everything else, producing visible banding in skies and skin tones. For still images use PNG or WebP; for animation use WebP or MP4, both of which are dramatically smaller and full-colour.
How many colours will the GIF have?
Up to 256, chosen from your image. The encoder builds a palette that fits the picture rather than using a fixed one, which is the best GIF can do — but a photograph contains far more than 256 colours, so skies and skin tones will show visible banding. Fully transparent pixels are preserved as GIF's single transparent index; partial transparency cannot be, because the format has no alpha channel, only on or off.
How it works, and more about jpg to gif
How it works
- Add your JPG file. Drag a JPG file onto the drop zone, or click to browse. You can select several at once.
- Choose your settings. GIF is lossless, so there is nothing to configure — the output matches the input pixel for pixel.
- Download the GIF. Conversion runs on your device as soon as each file is added — no upload, no queue. Download each result when it is ready.
JPG and GIF side by side
| JPG | GIF | |
|---|---|---|
| Full name | JPEG | Graphics Interchange Format |
| Compression | Lossy | Lossless |
| Transparency | No | Yes — alpha channel |
| Animation | No | Yes, in the format |
| Browser support | Universal — every browser, every device | Universal — every browser since 1987 |
| Typical 12 MP photo | ~3.2 MB | ~5.5 MB |
| Usually used for | Photographs, email attachments and anything needing maximum compatibility | Short looping animations, reaction clips and email-safe motion |
On a typical 12-megapixel phone photo, the GIF output comes out about 72% larger than the JPG original. These are order-of-magnitude figures for one kind of image — your own results will vary a great deal, because flat colour, text and line art behave nothing like photographic detail.
What this tool actually produces
Not estimates. Each row below was produced by running the file through this page in a real browser and measuring the result, at the default quality of 82.
| Test image | JPG in | GIF out | Change |
|---|---|---|---|
| Smooth gradient 1600 × 1200, broad tonal transitions — where banding and blocking show | 236 KB | 546 KB | +131% |
| UI screenshot 1440 × 900, dense text on flat panels — the hardest case for JPEG | 159 KB | 52 KB | -67% |
| Line-art diagram 1200 × 800, hard edges and large flat areas | 83 KB | 9 KB | -89% |
Note that the direction is not the same for every image. Converting JPG to GIFmakes some of these files smaller and others larger, which is why a single “GIFis smaller” rule of thumb is worth distrusting — what matters is what is in the picture. Measured in Chrome 150.0.7871.46; other browsers encode slightly differently.
What to watch out for
- Maximum 256 colours per frame — photos look visibly posterised
- Binary transparency only, producing jagged edges
- Enormous files compared with WebP or MP4 for the same animation
About the two formats
JPEG has been the default photo format for three decades, and its compatibility is unmatched — if a device can display an image at all, it can display a JPEG. The trade-offs are that it discards detail permanently on every save, and it has no transparency channel at all, so anything transparent becomes a solid background.
GIF survives entirely on momentum. It is capped at 256 colours per frame, has only on/off transparency, and produces files several times larger than a modern video or WebP animation of the same clip. It remains useful only because it autoplays and loops in places that block video, such as some email clients and chat apps.
Other conversions
Everything runs on your device — nothing is uploaded, so there is no size limit, no queue and no copy left on a server afterwards. There is more on how browser-based conversion works if you want the detail. Otherwise, browse every image tool, or convert GIF back to JPG.