Nouplo

Convert JPG to WebP

Serve lighter photos on your website or blog by converting JPG to WebP on your own device.

Drop files here

or click to choose from your deviceAccepted: JPG, JPEG

Up to 3 files per runUp to 20 MB per file5 runs per dayRemove limits with Pro✓ Works offline

Your files stay on your device

This tool runs entirely in your browser. Nothing is uploaded, nothing is stored, and you can even turn off your internet connection before you start.

Example

Example: 3 phone photos for a recipe blog converted to WebP at quality 0.8

Three JPG photos of a lemon tart for a blog post, straight from the phone: tart-1.jpg, tart-2.jpg and tart-3.jpg, 4032 × 3024 pixels each. The blog serves WebP, and lighter files make the post load faster.

  1. Drop all three at once: three files is what the free plan takes in one run.
  2. Move WebP quality from 0.9, where it starts, to 0.8, which suits photos on the web; 0.9 is closer to lossless and gives bigger files.
  3. Press Convert to WebP. Each photo is decoded and encoded again on your device and comes back as tart-1.webp, tart-2.webp and tart-3.webp, still 4032 × 3024.
  4. Camera details and GPS location are not carried over, because each picture is rebuilt from its pixels.

Three WebP files at the same pixel size, usually a quarter to a third smaller than the JPGs for the same look. 4032 pixels is far wider than a blog column, so shrinking the photos to about 1600 pixels first saves much more. Keep the JPGs as your originals.

How it works

  1. Drop .jpg or .jpeg photos onto the box, or choose them from your device.
  2. Set the WebP quality. 0.8 matches a typical JPG at quality 85 while producing a smaller file; 0.9 is close to lossless for photos.
  3. Press Convert to WebP. Your browser decodes the JPG and encodes WebP locally in a Web Worker.
  4. Download the WebP files individually or as a ZIP.

Frequently asked questions

How much smaller will a WebP be than my JPG?
For photographs, WebP is usually 25-35% smaller at equal visual quality. Pictures that were saved as high-quality JPGs from a camera often shrink even more once you pick a sensible quality.
Are my photos uploaded?
No. The conversion is done by your browser on your device. Nothing is sent anywhere, and the tool works offline.
Does converting JPG to WebP lose quality?
JPG is already lossy, and re-encoding adds a small additional loss. At quality 0.85 or higher the difference is not visible on screen. Keep your original JPGs as masters.
Is EXIF metadata kept?
No. The image is rebuilt from decoded pixels, so camera settings and GPS location are stripped. That is usually a plus for photos published online.
Who can view WebP images?
Every current browser, including Safari since version 14, plus Windows 11, macOS 11 and later, and Android. Some older desktop software still needs JPG.
It says my browser cannot encode WebP.
Then that browser can show WebP but not write it, and the tool stops rather than saving another format under a .webp name. Open the page in a current Chrome, Edge or Firefox and convert again.
What are the free limits?
The free plan allows 3 files per run, 20 MB per file and 5 runs per day. Pro removes these limits.

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