Free Image Converter Online — JPG to PNG, PNG to WebP & More
Different platforms and use cases require different image formats. Social media platforms prefer JPEG. Web developers want WebP for performance. Designers need PNG for transparency. Converting between formats used to require Photoshop — now you can do it instantly in your browser for free.
Try Image Converter Free →JPG vs PNG vs WebP — When to Use Each
JPEG/JPG: Best for photographs. Lossy compression gives small file sizes. No transparency support. Ideal for blog posts, product photos, social media.
PNG: Best for graphics, logos, screenshots. Lossless — no quality loss. Supports transparency (alpha channel). File sizes are larger for photos.
WebP: Google's modern format. Smaller than both JPEG and PNG at equivalent quality. Supports transparency. Supported by all modern browsers (Chrome, Firefox, Safari, Edge). Best choice for web images.
How to Convert Image Formats Online
1. Open Formly's free Image Converter. 2. Upload one or more images by dragging and dropping or clicking Browse. 3. Select your target format: JPEG, PNG, or WebP. 4. For JPEG and WebP, adjust the quality slider (default: 90%). 5. Click "Convert All" to batch-convert all uploaded images. 6. Download each converted image individually.
Converting PNG to WebP for SEO
Google's PageSpeed Insights and Core Web Vitals scoring reward WebP images. Switching from PNG/JPEG to WebP can reduce image payload by 25–50%, improving LCP (Largest Contentful Paint) scores. This directly impacts search rankings, especially in competitive niches. For WordPress sites, use WebP for all new uploads and convert existing images with this tool.
Batch Image Conversion Workflow
Upload all images at once, select the target format, click Convert All, then download each converted file. For large batches, convert in groups. The canvas-based conversion preserves image dimensions exactly — no unexpected cropping or resizing.
Frequently Asked Questions
Can I convert PNG to JPG without losing transparency?⌄
PNG supports transparency but JPEG does not. When converting PNG to JPEG, transparent areas are filled with white. If you need transparency in the output, convert to WebP instead — it supports transparency like PNG with smaller file sizes.
Does the image converter work offline?⌄
Yes. Once the page loads, all conversion happens in your browser using the Canvas API. No internet connection is needed after the initial page load, and your images never leave your device.
Is there a file size limit?⌄
There is no enforced limit, but very large images (over 20 MP) may slow down browser-based processing. For extremely large files, consider using a desktop application.