🔄 Convert Image Online Free: JPG, PNG, WebP Instantly

Transform your visual assets instantly while preserving maximum quality. Supports HEIC and new formats. Secure and registration-free.

🔒 Local Privacy

🚀 No Wait Times

💯 Original Quality

📱 HEIC/AVIF Support

📋 Setup

How to Convert Image Formats in Seconds

A 3-step process optimized for HEIC, WebP, JPG, and PNG.

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Upload Your Images

Select or drag the files you want to convert. We support JPG, PNG, WebP, HEIC, AVIF, and more.

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Choose Format

Select your output format. You can adjust compression quality to optimize file size.

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Instant Download

Click convert and get your files in seconds. No watermarks and no waiting queues.

Power Your Workflow with Private Bulk Conversion

The ultimate tool for photographers and web designers.

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Bulk Conversion

Convert up to **100 images** at once with total stability and native speed.

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WASM Powered

We use WebAssembly to process pixels at **blazing-fast speeds** directly on your device.

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Fortified Privacy

Your photos **never travel over the internet**. Conversion happens 100% in your local RAM.

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HEIC / AVIF Support

Easily convert **iPhone photos (HEIC)** or high-efficiency formats like **AVIF**.

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Professional Fidelity

We respect original color profiles and resolution for a **professional-grade** result.

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Always Free

No hidden limits, no subscriptions, and no need to create an account.

Modern Formats and Web Standards 2026

Technical guide to choose between JPG, WebP, and AVIF for your project.

Modern Formats for a Faster Web

The modern web demands speed. Converting your old JPG or PNG files to next-gen formats like WebP or AVIF can reduce page weight by up to 80% with no visible loss in quality. This not only improves user experience but is a critical pillar for technical SEO.

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WebP is the current standard that offers transparency and high compression in a single file.

HEIC to JPG: The Apple Dilemma

Photos taken with an iPhone often use the HEIC format to save space. While technically superior, many programs and websites don't yet support it. Our converter solves this instantly, allowing you to switch from HEIC to universal JPG or PNG in milliseconds without your photos ever leaving your device.

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DuneTools is the safest way to manage your private Apple memories.

Quality vs Size: The Perfect Balance

When converting images, you have total control. You can choose higher compression for ultra-fast web loading or keep quality at maximum for professional prints. Our tool lets you adjust these parameters visually before your final download.

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We recommend a quality setting of 85% for an optimal balance on most websites.

Format Comparison

Choose the right format for your use case

Input Format	Output Format	Key Features
🍏 HEIC (iPhone)	👉 JPG / PNG	✅	Universal Compatibility	Apple Users
📸 JPG / JPEG	👉 WebP / AVIF	❌	Web Performance (-80% weight)	SEO and Speed
🎨 PNG	👉 JPG / WebP	✅	Size Reduction	Logos (if to WebP)
🚀 AVIF	👉 JPG / PNG	✅	Legacy Compatibility	Older browsers

Image Conversion Help Center

Quick answers about the tool

Is it safe to convert my photos here?

Absolutely. Unlike other sites that upload your photos to their servers, DuneTools processes them 100% in your browser. Your images never travel across the internet, ensuring total privacy.

Which formats are supported?

We support all major formats: JPG, PNG, WebP, GIF, HEIC, and AVIF. You can mix file types in a single bulk upload.

How do I convert HEIC to JPG?

Just drag your .heic files into the tool. The system will recognize them and offer to convert them to JPG or PNG automatically.

Are there any usage limits?

None. DuneTools is a free and open tool. You can convert as many images as you need, with no registrations or watermarks.

Do I lose quality converting PNG to JPG?

JPG uses lossy compression, so technically there is a tiny data reduction. However, with quality set to 90-100%, it is imperceptible to the human eye.

Can I convert a mixed batch of JPG and PNG to WebP?

Yes, our converter is smart. You can drag a mix of formats (JPGs, PNGs, old HEICs) and select 'WebP' as output. Everything will be unified automatically.

What is better for my website: WebP or AVIF?

As of today (2025), WebP is the safest standard as it works on 98% of browsers. AVIF compresses more, but some older browsers still don't read it well.

Do you support RAW camera files?

Currently we focus on web and mobile formats (JPG, PNG, HEIC). Support for RAW (CR2, NEF, ARW) is on our roadmap for future updates.