Best Free Online Image Converter Tools 2026

Not all image converters are created equal. Here are the best free online converters — and what to look for.

What Makes a Great Image Converter?

1. Privacy: Processing should happen locally, not on a server

2. Speed: No upload/download wait times

3. Quality: Lossless or adjustable quality settings

4. Batch support: Convert multiple files at once

5. No limits: Free should mean unlimited

Top Format Conversions

HEIC to JPG

iPhone users: your photos are in HEIC format, which many apps can't open. Convert HEIC to JPG instantly in your browser.

WebP to PNG / JPG

WebP is great for the web, but not all software supports it. Use WebP to PNG or WebP to JPG for universal compatibility.

PNG to JPG / JPG to PNG

Need a smaller file? Convert PNG to JPG. Need transparency? Convert JPG to PNG.

SVG to PNG

Vector graphics don't work everywhere. Convert SVG to PNG at any resolution.

Batch Conversion

Most online converters make you do one file at a time. ImageToolbox supports unlimited batch conversion — upload 100 files and they all process simultaneously, right in your browser.

Privacy Comparison

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Try our free online image converters — all browser-based, all private, all unlimited.