Convert JPG to WebP
Re-encode a JPG as WebP and watch the file shrink. Quality slider included — the conversion runs entirely in your browser.
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This JPG to WebP converter re-encodes your image in the format built for the web, with a quality slider so you control the trade. Drop the file, set the quality, download a WebP that is usually 25–35% smaller than the JPG at the same visual quality.
The conversion runs in your browser — the image is decoded and re-encoded on your device, never uploaded. Modern browsers, WordPress and every major CDN serve WebP natively.
Why Use This JPG to WebP Tool?
- Smaller files — WebP typically beats JPG by 25–35% at equal visual quality
- Quality slider — from heavily compressed thumbnails to near-original archives
- Private — conversion happens in your browser, nothing is uploaded
- Free, no signup, no batch limits
- Instant — no upload round-trip before the work starts
How to Convert JPG to WebP — 3 Steps
- Drop your JPG into the box above, or tap the box to pick it from your device.
- Set the quality with the slider — 80 is a good default for web images, 60 for thumbnails, 90+ for anything print-adjacent.
- Press the blue Convert to WebP button and download the file.
Why WebP Replaced JPG for Web Images
WebP was built by Google to fix the two things JPG never did well: compression efficiency and transparency. At the same visual quality, a WebP image is commonly 25–35% smaller than the equivalent JPG — on an image-heavy page that compounds into real bandwidth and speed differences. Unlike JPG it also has an alpha channel, so a WebP can hold transparency the way a PNG does, at a fraction of the size.
The quality slider decides where your file lands on the size/sharpness curve. Around 80 is the sweet spot for photographs on websites — visually indistinguishable from the original for almost every viewer. Drop to 60–70 for thumbnails, preview cards and anything displayed small. Keep 90 and above when the image might be zoomed, cropped later, or printed; WebP is lossy at these settings, so the source of truth for archives should stay untouched.
Compatibility stopped being a reason to avoid WebP years ago: Chrome, Firefox, Edge and Safari all decode it, WordPress converts to it natively since version 5.8, and every major CDN and social platform handles it. The remaining edge cases are old desktop applications and some CMS fields that check file extensions blindly.
One honest caveat: encoding WebP is a browser feature, and a few browsers — notably older Safari versions — can decode WebP but cannot encode it. This tool detects that when the page loads and tells you plainly instead of producing a file that will not open.
Frequently Asked Questions
80 works for most web images. Use 60–70 for thumbnails and small displays, 90+ when the image will be zoomed, cropped or printed. Higher means sharper and larger.
Usually 25–35% smaller than the JPG at the same visual quality. Screenshots and flat graphics sometimes shrink even more; already-optimized images shrink less.
WebP supports transparency, but a JPG source never has any — so this conversion produces an opaque image. For transparency, start from a PNG and use the PNG to WebP tool.
Every modern browser, WordPress, and major CMS/CDN handle WebP. Some older desktop applications still prefer JPG — keep the original for those.
Some browsers (older Safari) can display WebP but cannot create it. The tool detects this before converting instead of giving you a broken file. Chrome, Firefox and Edge all encode WebP.
No. The decode and re-encode run in your browser — the file never leaves your device.
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