PureTools
Image Converter
Convert one JPG, PNG, WEBP, JFIF or ICO image directly in your browser. Drag and drop, choose the output format, preview the result, works offline, no signup and no watermark.
How to use the Image Converter
- Drop one image into the upload area, or click the drop zone to browse from your device.
- Choose the output format. WEBP is usually smallest, PNG keeps transparency, JPG is widely supported and ICO creates a favicon.
- For JPG, JFIF and WEBP, adjust quality to balance file size and visual detail. 80 to 90 percent is a good default.
- For ICO, choose the icon size before conversion. 32 × 32 and 48 × 48 are the most common favicon sizes.
- Click Convert image, inspect the preview, then download the converted file.
Image format comparison guide
Choosing the right format before converting saves rework and reduces file size meaningfully.
- JPG / JPEG, the right choice for photographs, product images and complex artwork. Lossy compression produces small files at good visual quality. No transparency support. Use quality 80–90% for a balance between size and sharpness. Universally compatible with every browser, device and platform since the 1990s.
- PNG, lossless compression that preserves every pixel. The correct format for logos, UI screenshots, icons and graphics with transparency. File sizes are larger than JPG for photographic content, but PNG is irreplaceable when crisp edges and alpha channels matter. PNG-24 supports full transparency; PNG-8 is limited to 256 colors.
- WEBP, Google's modern replacement for JPG and PNG. Achieves 25–35% smaller files than JPG at the same perceived quality, and supports transparency like PNG. Supported by all current browsers (Chrome, Firefox, Safari 14+, Edge). The best default for website images, blog thumbnails, ecommerce photos and social media graphics that need fast load times.
- JFIF, a specific JPEG file format variant used by some cameras, messaging apps and older software. Treated as a standard JPEG by this converter. If you receive a JFIF image that does not open correctly, convert it to JPG for universal compatibility.
- ICO, the favicon format used by browsers, operating systems and Windows desktop shortcuts. Supports multiple size layers; this tool creates a single-layer icon at the size you choose (16×16 to 256×256). Use 32×32 or 48×48 for standard browser favicons, and 180×180 if you need an Apple Touch Icon alongside it.
Common conversion scenarios
Converting a PNG logo to WEBP for a website reduces the file size while keeping transparency, a direct improvement to page load time. Converting a JPG photo to PNG before editing prevents additional quality loss from multiple rounds of lossy compression. Converting any image to ICO creates a custom browser tab icon without needing a design application. Converting a JFIF from a phone or chat app to JPG ensures compatibility with every image viewer and document workflow.
Frequently asked questions
Does the Image Converter work offline?
Yes. Once the page is loaded, conversion runs locally in your browser with the Canvas API, so the tool can keep working without a server round trip. This makes it fast, private and practical for sensitive screenshots, client assets, personal photos or small favicon work. No account is required and temporary previews are cleared when you remove the image or close the tab.
Which image formats are supported?
The converter supports JPG, JPEG, PNG, WEBP, JFIF and ICO. JFIF is handled as a JPEG-compatible format, ICO export creates a single-frame favicon file from the selected image size. For best results, use PNG or WEBP when transparency matters, JPG for photographs, and ICO only when preparing a favicon or desktop icon. If you need a different format afterward, use the Image Converter to convert the exported file while keeping the workflow local and private.
Why should I convert images to WEBP?
WEBP often creates smaller files than JPG or PNG while keeping similar visual quality. For websites, that can improve load speed, Core Web Vitals and mobile performance. It is especially useful for photos, thumbnails, blog images and ecommerce visuals. Modern browsers support WEBP widely, so it is a strong default when you want lighter assets. For CSS gradient backgrounds that need no image file at all, try the CSS Gradient Generator.
Will transparency be preserved during conversion?
Transparency is preserved when the output format supports it, such as PNG, WEBP or ICO. JPG and JFIF cannot store transparent pixels, so the converter fills transparent areas before export. The preview lets you inspect the result before downloading, which helps avoid saving a file with an unexpected background or flattened edge.
Does this tool add a watermark to converted images?
No. The converted file is downloaded clean, no watermark, no logo, no branding overlay of any kind. The only change is the output format and any quality adjustment you selected. The converter is completely free and watermark-free, with no account, no upgrade and no hidden limitation. The export contains only the converted image data, so it is suitable for websites, documents, client delivery or personal archives without cleanup.
Why convert one image at a time?
A single-image workflow is clearer on mobile and reduces accidental exports with the wrong format or quality setting. It also keeps memory use predictable, which matters when phones process high-resolution photos in the browser. After downloading the result, clear the current image and add the next file while keeping the same simple controls.
Can I convert an image without any quality loss?
It depends on the conversion path. Converting from PNG to another PNG (format rewrite), from PNG to WEBP at 100% quality, or from PNG to ICO keeps pixel data intact because all three are lossless in that direction. Converting from JPG to PNG produces a lossless PNG file, but it cannot recover quality that was already discarded when the original JPG was created. Converting from any format to JPG at any quality setting is always lossy because JPEG compression permanently removes fine detail. If you need to preserve every pixel exactly, stay with PNG or WEBP and choose the highest available quality setting. For reducing dimensions before converting, the Image Resizer handles that step first.