Image Format Converter
Convert PNG, JPEG, and WebP images client-side with previews and download-ready output.
How it works
- 1
Upload one or more images
Drag and drop or click to select PNG, JPEG, or WebP files.
- 2
Choose the target format
Switch between JPEG, PNG, and WebP. Adjust quality when using JPEG or WebP.
- 3
Review the previews
Compare original and converted versions side by side along with file sizes.
- 4
Download the result
Download each converted image once the browser finishes processing it.
Common use cases
Web image optimization
Convert a 1.8 MB PNG to WebP at 80% quality
Compatibility export
Convert a WebP screenshot to JPEG
About This Tool
Upload one or more images and convert them between PNG, JPEG, and WebP directly in your browser with side-by-side previews and download-ready output. The Image Format Converter is designed for designers, developers, marketers, and anyone who needs to prepare image assets for different platforms without relying on desktop software or cloud-based conversion services.
Choosing the right image format has a direct impact on visual quality, file size, and browser compatibility. PNG provides lossless compression and full alpha-channel transparency, making it ideal for logos, icons, UI elements, and any image that requires crisp edges and transparency. JPEG offers excellent lossy compression for photographs and complex imagery, achieving small file sizes at the cost of some fine detail — a trade-off that is usually imperceptible at quality settings of 75 or above. WebP, developed by Google, combines the best of both worlds: it supports both lossy and lossless compression, offers transparency like PNG, and typically produces files that are 25-35% smaller than equivalent JPEGs and up to 80% smaller than equivalent PNGs.
This tool handles all three formats seamlessly. Upload any combination of PNG, JPEG, or WebP files, select your target format, adjust quality settings when applicable, and download the converted results. A real-time side-by-side preview lets you compare the original and converted images visually, along with their respective file sizes, so you can make informed decisions about quality versus file size before committing to the download.
Common use cases include converting PNG logos to WebP for faster website loading, transforming WebP screenshots to JPEG for compatibility with applications that do not yet support WebP, preparing PNG assets with transparency for design handoff, and batch-converting product photos to a consistent format for CMS uploads. Web developers working on Core Web Vitals optimization will find the PNG-to-WebP conversion particularly valuable, as switching from PNG to WebP can dramatically improve LCP (Largest Contentful Paint) scores.
Quality control is built into every conversion. When targeting JPEG or WebP, the quality slider lets you fine-tune the compression level from 0 to 100. When targeting PNG, the tool applies optimal lossless deflate compression automatically. The format converter preserves the original image dimensions — no resizing occurs during conversion — and supports images up to the browser's maximum canvas size, which is typically 16,384 by 16,384 pixels in modern browsers.
All processing happens locally in your browser using the HTML5 Canvas API. Your images are never uploaded to any server, never stored in any database, and never accessible to third parties. This makes the tool safe for converting confidential screenshots, unreleased product photos, or any other sensitive imagery. Simply drag and drop your files, convert, and download — no account, no sign-up, no data collection.
More examples
Examples
Web image optimization
Input
Convert a 1.8 MB PNG to WebP at 80% quality
Output
Smaller WebP file with side-by-side preview and download link
Compatibility export
Input
Convert a WebP screenshot to JPEG
Output
JPEG file ready for apps that do not accept WebP uploads
Frequently Asked Questions
- Are my images uploaded to a server?
- No. Every conversion happens locally in your browser using the Canvas API. Your files never leave your device at any point.
- Which formats can I convert between?
- The tool converts common raster images between PNG, JPEG, and WebP. Upload a supported image, choose a target format, and download the result.
- What does the quality slider change?
- The quality slider affects JPEG and WebP output. Lower values create smaller files with more compression artifacts, while higher values preserve more visual detail at the cost of larger file sizes. PNG output uses lossless compression and is not affected by the slider.
- Can I convert multiple images at once?
- Yes. You can upload multiple files in one batch and download each converted image individually.
- Does converting from JPEG to PNG improve quality?
- No. Converting a JPEG to PNG does not recover any detail lost during the original JPEG compression. It will, however, prevent further quality loss in future edits and enable transparency support. The resulting PNG file will typically be larger than the source JPEG.
- Why should I convert PNG to WebP?
- WebP files are typically 25-35% smaller than equivalent PNGs at similar visual quality, and they also support transparency. Converting PNG assets to WebP can significantly reduce page weight and improve loading speed, which benefits SEO rankings and user experience.
- Will the conversion change my image dimensions?
- No. Format conversion only changes the encoding and file type. The pixel dimensions (width and height) remain exactly the same as the original image.
- Does the tool support animated WebP or GIF?
- The tool converts still images only. Animated formats like animated GIF or animated WebP are not currently supported — only the first frame would be processed.