Which image formats are supported for input?

The tool accepts JPG/JPEG, PNG, WebP, GIF (first frame only), BMP, and SVG files as input. These are all formats that the browser's Canvas API can render. For output, you can choose between JPG, PNG, WebP, and ICO.

What is multi-size ICO and when should I use it?

Multi-size ICO generates a single .ico file containing multiple image sizes: 16×16, 32×32, 48×48, 64×64, 128×128, and 256×256. This is the standard format for favicon files, as different contexts (browser tabs, taskbar, start menu) use different sizes. Enable 'Multi-size ICO' when converting to ICO for maximum compatibility.

Does image quality affect file size?

Yes. For JPEG and WebP formats, lower quality settings produce smaller file sizes but may introduce compression artifacts. PNG is lossless, so quality does not apply. We recommend 80–90% quality for a good balance of size and visual fidelity.

Is transparency preserved?

Transparency is preserved when converting to PNG or WebP (both support alpha channels). However, if you convert to JPEG, any transparent areas will be filled with white, as JPEG does not support transparency. ICO output preserves PNG-based transparency.

Are there any file size limits?

Since all processing happens in your browser, the practical limit depends on your device's available memory. Most images under 50MB work fine. Very large images (100MB+) may cause performance issues on lower-end devices.

Is my image uploaded to a server?

No. All image conversion happens entirely in your browser using the HTML5 Canvas API. Your image is never uploaded, stored, or transmitted anywhere. You can even use this tool offline after the page loads.

Tools

Click to upload or drag & drop images

Supports JPG, PNG, WebP, GIF, BMP, SVG

Image Converter — Convert JPG, PNG, WebP, ICO Online

Free online image converter tool. Convert images between JPG, PNG, WebP, and ICO formats instantly in your browser. Adjust image quality for JPEG and WebP output, preview before conversion, and download the result. Supports batch processing mode. All conversion happens locally — no image upload to any server.

Features

✓Convert images between JPG, PNG, WebP, and ICO formats instantly
✓Adjustable quality slider for JPEG and WebP output (0–100%)
✓Resize during conversion — set width, height or both (auto aspect ratio)
✓Rotate images 90° CW, 90° CCW, or 180° during conversion
✓Multi-size ICO output — generates 16×16, 32×32, 48×48, 64×64, 128×128, and 256×256 in one file
✓Batch processing — upload and convert multiple images at once
✓Download all converted images as a ZIP archive
✓Live image preview — see your image before and during conversion
✓Original image info display: dimensions, file size, and format
✓Drag-and-drop file upload or click to browse
✓All conversion happens in your browser — no server uploads
✓Supports common input formats: JPG, PNG, WebP, GIF, BMP, SVG
✓100% free with no file size limits

How to Use

1Upload images by clicking the upload area or dragging and dropping files.
2Select the target format from the sidebar (JPG, PNG, WebP, or ICO).
3Optional: adjust quality, resize dimensions, or rotation angle.
4Click 'Convert All' to process all images, or convert individually.
5Download each result individually or click 'Download All (ZIP)' for a batch archive.

Frequently Asked Questions

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