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Convert JPG, PNG, WebP, AVIF & HEIC Online

Convert any image format instantly — JPG to WebP, PNG to AVIF, HEIC to JPG and more. Batch convert up to 20 images at once with custom quality and resize options.

20+ Formats

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Fast Image Compression Without Quality Loss

Compress images for web, email or social media in seconds. Reduce file size by up to 90% while keeping sharp, high-quality results — no software download needed.

Up to 90% Smaller

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Your Images Are Never Stored or Shared

All conversions run entirely in your browser using WebAssembly. Images are never uploaded to any server, never stored and never shared with anyone — your files stay on your device.

100% Private

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Free Image Converter — No Sign-Up Required

Works on any device — Windows, Mac, iPhone, Android — directly in your browser. No account, no watermarks, no limits. 100% free image conversion, forever.

Always Free

How to Convert Images Online — 4 Simple Steps

Converting an image with FreeConverto takes less than 30 seconds. Everything runs in your browser — no software to install, no account needed and your files never leave your device.

Upload Your Images

Drag and drop up to 20 images or click to browse. Supports JPG, PNG, WebP, AVIF, GIF, BMP and HEIC from iPhone.

Choose Output Format

Select your target format — WebP for web use, AVIF for the smallest files, JPG for compatibility or PNG for transparency.

Set Quality & Size

Adjust the quality slider and optionally set a maximum width to resize images at the same time as converting.

Download

Click Convert & Download. Download files one by one or all at once. No watermarks, no sign-up, instant results.

Which Image Format Should You Convert To?

Different image formats suit different use cases. Use this guide to choose the best output format for your images before converting.

WebP

Best for websites & blogs

25–35% smaller than JPG at the same quality. Supported by all modern browsers — Chrome, Firefox, Safari and Edge.

25–35% smaller than JPGTransparency ✓All modern browsers ✓

AVIF

Best for smallest file size

Up to 50% smaller than JPG using real libavif WebAssembly encoding. Supported by Chrome, Firefox and Safari 16+.

Up to 50% smaller than JPGTransparency ✓Chrome, Firefox, Safari 16+ ✓

JPG

Best for photos & email

The most universally compatible format. Works in every browser, email client, printer and operating system — old or new.

Standard baseline sizeNo transparencyUniversal compatibility ✓

PNG

Best for logos & transparency

Lossless quality with full transparency support. Essential for logos, icons and any image that needs a transparent background.

Larger than JPG for photosFull transparency ✓Lossless quality ✓

GIF

Best for animations

The standard for simple looping animations. Limited to 256 colours — use PNG or WebP for all static graphics instead.

256 colours maximumAnimation support ✓Not for photos

HEIC

Default iPhone format

iPhones save photos in HEIC by default. Limited outside Apple — convert to JPG or WebP before sharing with others.

Smaller than JPG at same qualityLimited compatibilityConvert to JPG / WebP

Frequently Asked Questions

How do I convert an image to JPG, PNG or WebP online?

Upload your image using the tool above, select your output format from the dropdown and click Convert & Download. The converted file saves to your device instantly — no account needed.

Can I convert HEIC photos from my iPhone?

Yes — upload your HEIC or HEIF files directly. They are decoded and converted to JPG, WebP, PNG or AVIF automatically. You can also batch convert multiple iPhone photos at once.

Is WebP better than JPG for websites?

Yes in most cases. WebP produces files 25–35% smaller than JPG at the same visual quality, which improves page load speed and Core Web Vitals scores. All modern browsers support WebP. JPG is still better for maximum compatibility with older software.

Does AVIF actually produce smaller files?

Yes — this tool uses real WebAssembly AVIF encoding (libavif) rather than the browser's built-in canvas encoder. You can expect genuinely 30–50% smaller files compared to JPG. AVIF encoding takes a few seconds longer per image because it runs a real codec, not a fast canvas approximation.

Can I convert and compress images at the same time?

Yes — use the quality slider to reduce file size while converting. For more aggressive compression use our dedicated image compressor which can reduce file sizes by up to 90%.

Can I resize images while converting?

Yes — uncheck "Keep original size" and enter a maximum width in pixels. The image will be scaled proportionally to fit within that width.

How many images can I convert at once?

You can convert up to 20 images in a single batch. All files are processed in your browser — no server limits, no queues and no waiting.

Is this image converter completely free?

Yes — completely free with no usage limits, no watermarks and no account required.

Free Online Image Converter