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The Best Free Online Image Converter: 100+ Formats

Whether you are a designer dealing with RAW photos, a developer optimizing WebP assets, or just someone trying to open a HEIC photo on Windows—an image format converter is an essential tool. But with so many options online, which one should you use?

U-Ultra/Unity offers a free online image converter supporting over 100 image formats—from common formats like JPEG and PNG to specialized ones like SVG, HEIC, RAW (CR2/NEF/ARW), EPS, and TIFF. Best of all, there is no registration required and no file size limit for basic conversions.

What Makes a Good Image Converter?

Format coverage matters most. A good converter handles everything from JPEG to obscure camera RAW formats. U-Ultra/Unity supports 100+ formats, making it one of the most comprehensive free converters available.

Color accuracy is non-negotiable. When converting between formats, color profiles must be preserved. CMYK images should stay CMYK when converting to TIFF. RGBA transparency must not be flattened unless the target format does not support it (like JPEG). Our converter handles all of these edge cases.

Speed and reliability. Every image is processed server-side for consistent output, not dependent on your browser capabilities. This is especially important for HEIC and RAW conversion—browser-based tools simply cannot handle these formats.

Common Conversion Scenarios

HEIC to JPEG: iPhone photos default to HEIC format, which Windows cannot open. Convert HEIC to JPEG in seconds—preserving full resolution and EXIF data.

WebP to PNG: WebP is great for web performance, but not all apps support it. Convert WebP to PNG to get a universally compatible image.

RAW to JPEG: Camera RAW files (CR2, NEF, ARW) are huge and unviewable without special software. Convert them to JPEG for easy sharing and editing.

SVG to PNG: Need a raster version of a vector graphic? Convert SVG to PNG at any resolution.

PNG to ICO: Creating a favicon? Convert PNG to ICO format directly.

PNG to TIFF (CMYK): Archiving or printing? Convert PNG to CMYK TIFF with color profile preservation.

Advanced Features

Batch conversion is supported—upload multiple files and convert them all at once. Each file is processed independently with the same settings. Quality adjustment lets you control output file size for JPEG and WebP. Metadata preservation keeps your EXIF, XMP, and IPTC data intact. Color mode selection (RGB/CMYK/RGBA) for formats that support it.

How to Convert Images Online

Step 1: Upload your image(s). Drag and drop or click to browse. Step 2: Select the target format from the dropdown. Options include JPEG, PNG, WebP, HEIC, SVG, RAW, TIFF, ICO, BMP, GIF, and more. Step 3: Adjust quality or color settings if needed. Step 4: Click Convert. Your converted file downloads automatically.

Security and Privacy

Your files are encrypted during transfer. Source files are automatically deleted from our servers shortly after processing. We never access, share, or store your file content beyond what is necessary to complete the conversion.

Try the Free Image Converter now at U-Ultra/Unity. 100+ formats, no registration, unlimited use.

Try the tools mentioned in this article at U-Ultra/Unity — free, no registration required.