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Convert image format

Change your image format directly in your browser. No server uploads. Private and secure.

Sube tus imágenes aquí

Arrastra tus archivos, o haz clic para explorar.
Soporta PNG, JPG, WEBP, AVIF, GIF • Máx. 50MB (GIF: 10MB)

100% Private
Fast Conversion
Multiple Files

Online Image Converter: JPG, PNG & WebP

Change your image format quickly and securely. Convert between JPG, PNG, WebP and AVIF directly in your browser without uploading files to any server.

How to convert images?

1. Select format

Choose the source and destination format for your conversion.

2. Upload your image

Drag or select the images you want to convert.

3. Download

Get your converted images instantly.

Popular Conversions

Choose the conversion you need. Each format has specific advantages for different use cases.

JPG PNG
Add transparency support
PNG JPG
Reduce file size
JPG WebP
Optimize for web
WebP JPG
Maximum compatibility

Frequently Asked Questions

What is the best image format for my website? ▼
The best image format depends entirely on your use case. For modern web performance, we recommend WebP or AVIF, as they offer superior compression. If you need transparency support with high fidelity, PNG is the technical standard, while JPG remains the most compatible choice for photographs that don't require transparency.
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How can I convert images without losing quality? ▼
To convert images without quality loss, choosing the right destination format is key.
  • To PNG: Quality remains identical as it is a lossless format.
  • To JPG/WebP: We use high-fidelity algorithms that minimize visual degradation.
If you need further optimization after conversion, we recommend using our professional image compressor to shrink file size while keeping visual clarity.
Is it safe to use an online image converter? ▼
At OptimizeImg, security is our top priority. Unlike other sites, our image conversion happens 100% in your browser using WebAssembly. This means your images are never uploaded to a server, ensuring total privacy and data protection for your personal or professional photos.

How does image conversion work?

Image conversion is the process of transforming an image file from one format to another. Each format (JPG, PNG, WebP, AVIF) uses different compression algorithms and stores image data differently.

JPG uses lossy compression, ideal for photographs. PNG is lossless and supports transparency. WebP combines the best of both with smaller size. AVIF offers the best modern compression.

Our tool uses WebAssembly to decode the original image, process pixels, and re-encode them into the new format, all directly in your browser without sending data to external servers.

Need Even Smaller Files?

Combine format conversion with our professional compression tool to achieve maximum space savings without sacrificing visual quality.

Online Image Compressor

Reduce file size without losing quality. 100% private.