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How to Convert Images Online for Free: Convert HEIC, PNG, WebP and More in Batch

Next BConvert Team

Every Device Wants a Different Format

Your iPhone saves photos as HEIC. Your website needs WebP. Social media wants JPG. Your designer sends PNG files. And somewhere in the middle, you have images in formats your apps can't open.

It's a constant headache. You need to convert images from one format to another, and the question is how to do it fast, without losing quality, and without sending your personal photos to a stranger's server.

Why Uploading Photos Is a Bad Idea

Most online image converters work the same way: you upload your photo, they convert it, you download the result. This creates several problems:

  • Slow uploads — sending hundreds of photos takes forever
  • Privacy risk — your personal photos are stored on someone else's server
  • Quality loss — some tools re-compress your images, making them look worse
  • File limits — many tools won't let you convert more than a few files at a time
  • Account required — some force you to sign up before you can do anything

A better approach is converting your images right in your browser, without uploading anything.

How Browser-Based Image Conversion Works

When you use a browser-based converter, everything happens on your device:

  1. Open the tool — go to the converter page in your browser
  2. Add your images — drag them onto the page or click to browse
  3. Pick the format — choose JPG, PNG, WebP, or whatever you need
  4. Click convert — batch processing starts immediately
  5. Download — save your converted images individually or as a ZIP

Your photos never leave your computer. The conversion is as private as viewing them on your screen.

What You Can Convert

HEIC to JPG

iPhone photos look great but HEIC files don't work everywhere. Converting HEIC to JPG makes your photos open on Windows, upload to social media, and share with anyone — without compatibility issues.

PNG to JPG

PNG files are high quality but large. Converting to JPG shrinks the file size dramatically — perfect for sharing, emailing, and web use — while keeping the visual quality you need.

JPG to PNG

Need transparency or pixel-perfect quality? Converting JPG to PNG preserves every detail and supports transparent backgrounds for design work.

WebP to JPG

WebP is popular on the web, but not every app handles it yet. Converting WebP to JPG ensures your images open everywhere — on any device, in any app.

And More

Most converters also support BMP, TIFF, GIF, AVIF, and other formats. Whatever image format you're dealing with, there's likely a conversion option for it.

Batch Convert Hundreds of Photos

The real power of browser-based conversion is handling multiple files at once:

  • Select an entire folder of photos
  • Apply the same settings to all of them
  • Download everything together as a ZIP file

Converting 100 iPhone photos from HEIC to JPG takes just a few minutes. No uploading one by one. No waiting. No frustration.

Common Situations

iPhone Photos on Windows

HEIC photos from your iPhone often won't open in Windows Photo Viewer, won't upload to websites, and can't be easily shared. Converting to JPG fixes all of these problems instantly.

Social Media Sharing

Different platforms prefer different formats. Converting your images to the right format before uploading ensures the best quality and fastest loading.

Emailing Photos

Large PNG or TIFF files are painful to email. Converting to JPG reduces file sizes by 60-80% while keeping the quality perfectly fine for viewing.

Website Images

Faster-loading images mean happier visitors. Converting to WebP or compressed JPG helps your website load quickly without sacrificing visual quality.

Design Work

Converting between formats lets you move seamlessly between tools — JPG for photos, PNG for graphics with transparency, WebP for web delivery.

Keeping Your Photos Quality High

Small File, Great Quality

JPG and WebP reduce file size by removing data your eyes can't see. The result? Smaller files that still look sharp on screen.

Pixel-Perfect when Needed

PNG and BMP keep every single pixel. Perfect for logos, icons, and graphics where clarity matters.

Your Resolution Stays the Same

Converting formats doesn't change your image size. A 4000x3000 photo stays 4000x3000 — only the format changes.

Your Photos Stay Private

This is the big one. When you upload photos to an online converter:

  • The service can see your images
  • Your photos might be stored on their servers forever
  • A data breach could expose your personal pictures

With browser-based conversion, none of this happens. Your photos are read from your device, converted in your browser, and saved back to your device. Nobody else ever sees them.

Start Converting

Try the free Image Converter in your browser:

  1. Drag your images onto the page
  2. Choose your target format
  3. Click convert
  4. Download your files

Works on Windows, Mac, Linux, and any device with a web browser. No software to install, no photos uploaded, completely free.