How to convert JPG to WebP
- Click Choose files or drop your JPG images into the box above — up to 10 at a time on the free plan.
- Optionally set the quality, or switch on lossless mode.
- Conversion starts right away. Download each WebP file, or click Download all to get them as one ZIP.
JPG vs WebP
| JPG | WebP | |
|---|---|---|
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Colors | 8 bits per channel (16.7 million colors) | 8 bits per channel, full alpha |
| File size (photos) | Small | Very small |
| Opens on | Everything: every browser, phone, computer, printer kiosk and photo app | All modern browsers (Chrome, Edge, Firefox, Safari 14+); some older apps and editors cannot open it |
| Best for | Photos you want to share, upload, email or print | Images on websites, where smaller files mean faster pages |
About JPG and WebP
What is JPG?
JPG (or JPEG) is the most widely used image format in the world. It compresses photos by discarding detail the eye barely notices, so a 12-megapixel picture fits in 2–5 MB. The trade-off is that every re-save loses a little more quality, and it cannot store transparency.
- Opens absolutely everywhere
- Small files for photographs
- Adjustable quality vs. size
- Lossy: quality drops a little with every re-save
- No transparency
- Blurry edges on text, logos and screenshots
What is WebP?
WebP was created by Google to make web pages load faster. Lossy WebP is typically 25–35% smaller than a JPG of similar quality, and lossless WebP is about a quarter smaller than PNG. It also supports transparency and animation. Many websites now serve WebP automatically, which is why images you download often end up as .webp files that older software refuses to open.
- Much smaller than JPG and PNG
- Transparency and animation
- Lossy and lossless modes
- Not accepted by some upload forms, print shops and older apps
- Windows Photo Viewer and older Photoshop versions cannot open it
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
Will converting JPG to WebP reduce quality?
WebP uses lossy compression, but at the default quality of 90% the difference is practically invisible, even though the JPG was already compressed. Move the quality slider down for smaller files, or up to 100% for the best possible result.
Will the WebP file be smaller than the JPG?
Usually yes — WebP compresses photos more efficiently than JPG. The exact saving depends on the image and the quality you choose.
Can I convert several JPG images at once?
Yes. The free plan handles 10 images at a time, and you can download everything as a single ZIP. Pro removes the batch limit, converts files in parallel and supports files up to 4 GB.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. On phones, extremely large images may be scaled down to fit within the browser’s memory limit; you will see a note if that happens.