Image Converter

How to Use the Image Converter

1. Upload Images: Drag and drop one or multiple images onto the upload zone. All common formats are accepted as input (JPEG, PNG, WebP, GIF, BMP, TIFF, SVG).
2. Select Output Format: Choose your target format — PNG (lossless, supports transparency), JPEG (lossy, small files, universal), or WebP (best compression, modern browsers).
3. Adjust Quality: For JPEG and WebP, set the quality slider (10-100%). PNG ignores this setting as it's lossless. Higher quality = larger file size.
4. Convert: Click "Convert All" to batch-convert all uploaded images simultaneously. Each result shows the original name, size comparison, and a download link.
5. Download: Click "Download" on each converted image to save it in the new format.

Technical Overview & Use Cases

This converter draws each input image onto an HTML5 Canvas at its native resolution, then exports via canvas.toBlob() in the selected format. The Canvas API handles format transcoding natively — the browser's built-in encoders produce standards-compliant output. JPEG encoding applies DCT (Discrete Cosine Transform) compression, WebP uses VP8/VP8L prediction coding, and PNG uses DEFLATE with filtering. Batch processing handles multiple files sequentially without blocking the UI.

Real-world use cases:

• Format compatibility: Convert WebP images (received from modern APIs/tools) to JPEG or PNG for compatibility with older software, email clients, or social platforms that don't support WebP.
• Transparency handling: Convert PNG images with transparency to JPEG (fills transparent areas with white) when transparency isn't needed — resulting in significantly smaller files.
• Web optimization: Convert PNG screenshots and graphics to WebP for web deployment, achieving 50-80% file size reduction while maintaining visual quality.

Privacy & Security Guarantee

This tool is part of the FAK LAB ecosystem, founded by Faizan Ahmad Khan Khichi. All image format conversion happens 100% in your browser using the Canvas API. Your images are decoded, redrawn, and re-encoded entirely in memory — never uploaded to any server. Whether you're converting proprietary graphics, personal photos, or confidential documents, everything stays on your device.

Frequently Asked Questions

What happens to transparency when converting to JPEG?

JPEG does not support transparency (alpha channel). When converting a PNG or WebP image with transparent areas to JPEG, those areas are filled with white (the canvas default background). If you need to preserve transparency, use PNG or WebP as your output format instead.

Which format produces the smallest file size?

For photographs: WebP < JPEG < PNG (WebP wins by 25-35% over JPEG). For graphics with flat colors/text: PNG is often smaller than JPEG because JPEG struggles with sharp edges. For maximum compression with transparency support, WebP is the best all-around choice for modern applications.

Is there a limit on image dimensions or file count?

No artificial limits are imposed. The tool handles any image dimensions your browser can decode into a Canvas (typically up to 16,384×16,384 pixels on most devices). File count is unlimited — batch convert dozens of images simultaneously. Very large images may process slowly depending on your device's memory.