Output format
90%
Resize
Convert JPG to WEBP Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your JPG file
Click the upload button or drag and drop your JPG file. You can upload up to 10 files at once for batch conversion.
2Select WebP output format
Choose WebP as the output format.
3Convert
Click Convert. Convertify processes your file instantly using Rust and libvips.
4Download WebP
Download your converted WebP file. The original JPG is deleted from the server immediately.
Supported Image Formats
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- How much smaller will my WebP be compared to JPG?
- Typically 25–35% smaller at the same visual quality. A 400 KB JPG will usually convert to approximately 260–300 KB WebP. Results vary by image content — photos with smooth gradients compress better than images with fine detail or noise.
- Will converting JPG to WebP affect image quality?
- At high quality settings (85+), the difference is imperceptible to the human eye. Convertify uses quality 85 by default, which produces visually identical results to the original JPG for most images while achieving significant file size reduction.
- Is WebP supported by all browsers?
- WebP is supported by all modern browsers including Chrome, Firefox, Safari, Edge, and Opera — covering over 95% of global browser traffic. Internet Explorer does not support WebP, but IE usage is below 1% globally as of 2026.
- Can I open WebP files in Photoshop?
- Photoshop CC 2021 and later support WebP natively. Older versions require the WebPShop plugin from Google. For universal app compatibility, JPG remains the better format for files shared outside the browser.
- Does WebP support transparency like PNG?
- Yes. WebP supports full alpha channel transparency. If you need a transparent background, convert to WebP lossy with alpha or use PNG. Note: JPG does not have transparency, so if your source JPG has a white background, it will remain white in the WebP output.
- Can I use WebP for social media uploads?
- Most social platforms (Instagram, Facebook, Twitter) accept WebP but convert it server-side to their own format. For direct sharing or email attachments, JPG is more reliable. WebP is best suited for images served on your own website.
- Can I convert multiple JPG files to WebP at once?
- Yes. Convertify supports batch conversion — upload up to 10 JPG files and download them all as WebP simultaneously.
- Is WebP lossless or lossy?
- WebP supports both. Lossy WebP (used for photos) achieves 25–35% better compression than JPG. Lossless WebP (used for graphics and screenshots) achieves 26% better compression than PNG on average. Convertify converts JPG to lossy WebP by default, which is appropriate for photographic content.
Why convert JPG to WebP?
WebP is Google's open image format designed as a direct replacement for JPG on the web. At equivalent visual quality, WebP files are typically 25–35% smaller than JPG. This translates directly into faster page load times, better Core Web Vitals scores, and improved SEO rankings. Google PageSpeed Insights and Lighthouse explicitly recommend serving images in next-gen formats — WebP is the most widely supported of these. Chrome, Firefox, Safari, Edge, and Opera all support WebP natively, covering over 95% of global browser traffic.
WebP vs JPG: compression and quality
WebP uses a compression algorithm derived from the VP8 video codec. For photographic images, WebP lossy compression outperforms JPG at every quality level — smaller files with fewer visible artifacts. At quality 80, a typical product photo that is 400 KB as JPG will be around 270 KB as WebP — a 32% reduction. At quality 90, the reduction is smaller but the files are visually indistinguishable. WebP also supports lossless compression (equivalent to PNG) and animated images (equivalent to GIF with better compression). JPG supports none of these.
JPG vs WebP: Key differences
| Feature | JPG | WebP |
|---|---|---|
| Compression | Lossy only | Lossy and lossless |
| File size vs JPG | Baseline | 25–35% smaller |
| Transparency | Not supported | Full alpha channel |
| Animation | Not supported | Supported |
| Browser support | All browsers & apps | All modern browsers (95%+) |
| App support | Universal | Limited outside browsers |
| Core Web Vitals | Standard | Recommended by Google |
| Social media upload | Accepted everywhere | Often converted on upload |
| Best for | Universal sharing | Web delivery |
Core Web Vitals and SEO: the real reason to switch
Google's Core Web Vitals include Largest Contentful Paint (LCP) — the time it takes for the main image on a page to load. Large JPG files are one of the most common causes of poor LCP scores. Switching hero images and product photos from JPG to WebP typically reduces image payload by 30% or more, directly improving LCP. PageSpeed Insights scores image format as a distinct audit item — failing it explicitly costs you points in the Performance score. For e-commerce sites where product images are the largest content element, converting to WebP is the highest-impact single change you can make for page speed.
WebP browser support in 2026
WebP has been a Baseline Widely Available format since 2020. As of 2026, WebP is supported by Chrome 32+, Firefox 65+, Edge 18+, Safari 14+, and Opera 19+. Global support is approximately 95.67% of browser traffic. The only browsers without WebP support are Internet Explorer (discontinued) and very old mobile browsers. For modern web development, WebP can be served without a fallback in most cases. If you need to support IE11 or very old Android browsers, use the HTML
WebP transparency and animation
Unlike JPG, WebP supports full alpha channel transparency. Product photos with transparent backgrounds, logos, and cutout images can all be saved as WebP with transparency preserved. This makes WebP a potential replacement for both JPG (photos) and PNG (transparent graphics) in web contexts. WebP also supports animation, making it a compressed alternative to GIF. Animated WebP files are typically 64% smaller than equivalent GIFs according to Google's benchmarks. Convertify converts JPG to WebP with lossy compression at high quality settings by default.
When JPG is still the better choice
WebP is not always the right choice. For images shared outside the browser — email attachments, social media direct uploads, photo editing software, print workflows — JPG has far broader support. Instagram, Facebook, and Twitter accept JPG universally but may convert WebP on upload. Most desktop photo editors including older versions of Photoshop do not open WebP files natively. If your primary use case is sharing images with other people across different devices and applications, JPG remains the safer format. Use WebP specifically for images served on your own website.
How to implement WebP on your website
The simplest implementation uses the HTML
Batch JPG to WebP conversion
Convertify supports batch conversion of up to 10 JPG files to WebP simultaneously. This is useful for converting a product image catalog, optimizing a set of blog post images, or preparing a batch of assets for web deployment. Upload all files at once, click Convert, and download the WebP versions as a package. All files are processed in parallel and ready within seconds.
How Convertify converts JPG to WebP
Convertify uses a Rust backend with libvips for high-performance image conversion. libvips uses a streaming pipeline that processes images without loading the entire file into memory — fast even for large JPG files. The conversion applies WebP lossy compression at quality 85 by default, producing files that are visually identical to the original JPG while being significantly smaller. EXIF metadata is preserved. Files are processed server-side over HTTPS and deleted immediately after download.