Shrink JPG photos into WebP files that load faster on your website. Free in your browser — no sign-up, no watermarks.
How to convert JPG to WebP
- Click Choose files (or drag & drop) and select one or more JPG files. You can also paste an image from your clipboard.
- Adjust the quality slider if you want smaller files or maximum fidelity (92% is a good default).
- Press Convert to WebP. Each file is converted with a live progress indicator.
- Open the download page to save your files individually or grab everything as a single ZIP.
Why convert JPG to WebP?
WebP encodes the same photo roughly a quarter to a third smaller than JPG at equal visual quality. If you publish images online — a blog, a shop, a portfolio — converting JPGs to WebP is one of the easiest page-speed wins available. Set the quality slider to taste and batch-convert entire folders.
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What this tool preserves — and what it changes
✓ Preserved
- Dimensions — no resizing happens on this path
- Visual appearance at the quality you pick (default 92%, adjustable 50–100%)
↺ Changed
- A second lossy generation: the JPG's existing compression is baked in and the WebP encode adds its own — converting back and forth never recovers detail
- EXIF metadata (camera, GPS) is stripped by the canvas re-encode
Known limits & edge cases
- The size win depends on the source: an already heavily-compressed JPG re-encodes smaller but softer — the Labs quality ladder charts size against quality with this same encoder
- A browser without a WebP encoder gets an explicit error suggesting a current Chrome, Edge or Firefox — not a wrong-format download
Engine: Your browser's own image decoder and canvas encoders (AVIF included); HEIC decodes via a bundled JavaScript decoder (Emscripten-compiled libheif); GIF, BMP and ICO are written by our own encoders. These statements describe the engine as shipped on 2026-10-02 — behaviour changes are recorded in the changelog. Measured data: Which image format for which content — measured on four content types.
About the formats
JPG vs WebP at a glance
| JPG | WebP |
| Type | Raster image | Raster image |
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Typical use | Photos, web images, email attachments | Web images, downloads from websites |
A one-step page-speed upgrade
If your site still serves JPG photos, converting them to WebP is one of the cheapest performance wins available: typically 25–35% smaller files at the same visual quality, which compounds across every image on the page and every visitor on a slow connection. Faster image loading improves Largest Contentful Paint, one of the Core Web Vitals that Google uses in ranking — so the benefit is measurable, not cosmetic.
Use the quality slider deliberately. Re-encoding an already-compressed JPG at a very high WebP setting can occasionally grow the file; around 80–85 is the sweet spot where WebP’s encoder does its best work on photographic content. Batch-convert an entire image folder in one drop, download the ZIP, and swap the files in your CMS — file names are preserved with the new extension, so references are easy to update.
Guides for this task
Frequently asked questions
Is this JPG to WebP converter free?
Yes — completely free, with no sign-up, no watermarks and no daily quota. Processing happens in this browser, so the practical limit is the memory available on your device.
Can I convert multiple JPG files at once?
Yes. Select or drop as many files as you like — each one is converted in sequence with its own progress status, and you can download the results individually or all together as a ZIP archive.
Will I lose quality converting JPG to WebP?
WebP uses lossy compression, so there is a quality/size trade-off you control with the quality slider. At the default 92% the difference is practically invisible while files stay small. For archival-grade copies choose PNG instead.
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