WebP vs JPG, explained
WebP is a newer image format that produces smaller files than JPG at a similar visual quality — commonly 25-35% smaller. Use WebP when you control where the image will be displayed, such as your own website. Use JPG when you are uploading somewhere you do not control, or handing a file to someone else, because JPG is supported literally everywhere.
Published September 7, 2026
What WebP actually improves
WebP uses more modern compression than JPG's decades-old method. For the same perceived quality it stores the image in fewer bytes, which means faster page loads and less bandwidth. It also supports transparency (like PNG) and animation (like GIF), so one format covers cases that used to need three.
| WebP | JPG | |
|---|---|---|
| File size at similar quality | Smaller (roughly 25-35%) | Baseline |
| Transparency | Yes | No |
| Animation | Yes | No |
| Browser support | All current browsers | Universal, including very old software |
| Accepted by upload forms | Sometimes | Almost always |
| Editing app support | Improving, still uneven | Universal |
When to choose WebP
- Images on your own website or app. You control the delivery, every modern browser can display it, and the size saving is free performance.
- You need transparency and small size. WebP can be a lighter replacement for a large PNG logo or graphic.
- Large galleries or long pages. The per-image saving adds up across dozens of images.
When to stick with JPG
- Uploading to a platform. Some social, marketplace and job-application forms still reject or mishandle WebP. JPG is the safe default.
- Sending a file to a client or collaborator. You do not know what software they will open it in.
- Print or archival. Stick to well-established formats.
- YouTube thumbnails. The uploader expects JPG or PNG.
You can go both ways
The WebP Converter turns JPG or PNG into WebP, and WebP back into JPG or PNG, entirely in your browser. Converting a JPG to WebP re-compresses it, so start from the best-quality JPG you have.
A note on quality when converting
Converting an existing JPG to WebP does not undo the compression the JPG already applied — it re-encodes what is left. You will get a smaller file, but not a magically better image. For the best result, export WebP from your original source rather than from a JPG that has been saved and re-saved.
Going the other way, WebP to JPG, is a normal lossy conversion. Expect a slightly larger file and the usual faint JPG softening on hard edges.
Images are processed on your device — nothing is uploaded.
Frequently asked questions
Is WebP better than JPG?
For file size at a given quality, yes — WebP is typically 25-35% smaller and also supports transparency and animation. For compatibility, JPG is still ahead because it works in every piece of software and is accepted by nearly every upload form.
Does converting JPG to WebP improve image quality?
No. The JPG has already discarded detail permanently. Converting to WebP makes the file smaller but works from the already-compressed image. Export WebP from your original if quality matters.
Can everyone open a WebP file?
Every current web browser displays WebP. Some older desktop applications and a few upload forms still do not handle it well, which is why JPG remains the safer choice for files you are sending elsewhere.
Should I use WebP for social media?
Usually no. Support across social upload forms is inconsistent. Convert to JPG (or PNG for flat graphics) before uploading, and keep WebP for images you host yourself.