How it works
- Drop your files in the zone above (or click it, or paste with Ctrl+V).
- They convert instantly, right in your browser — nothing is uploaded.
- Adjust quality or max width if needed; files reconvert automatically.
- Download files one by one, or everything at once as a ZIP.
About the formats
HEIC
HEIC (High Efficiency Image Container) is the format Apple has used for iPhone and iPad photos since iOS 11. It stores images with the HEVC codec, which keeps files roughly half the size of an equivalent JPG at the same quality. The catch: support outside the Apple ecosystem is patchy — many Windows apps, Android devices, websites and printing services still refuse HEIC files.
WebP
WebP is Google's image format for the web, offering smaller files than JPG and PNG with both lossy and lossless modes plus transparency. Browsers handle it well, but plenty of desktop software, older tools and upload forms still reject it — which is why images saved from the web often need converting.
What this conversion actually gives
Measured with the converter on this page, on a 2016 × 1512 px test image: the HEIC file weighs 474 KB.
| Setting | Result | Change |
|---|---|---|
| Quality 85 % (default) | 558 KB | +18 % |
| Quality 60 % | 201 KB | −58 % |
| Max width 1600 px, quality 85 % | 297 KB | −37 % |
Converting to WebP makes the file bigger here (+18 %): HEIC relies on a newer, more efficient codec than WebP: at comparable quality, WebP simply needs more room.
For an email attachment, quality 60 % brings it down to 201 KB. Capping the width at 1600 px gives 297 KB — plenty for any screen.
- Camera model, date and GPS coordinates stored by the device are removed unless you tick « keep metadata ».
Your own files will differ — a photo full of detail compresses less well than a flat graphic. These figures come from one reproducible test image, not from an average.
Frequently asked questions
How big will my WebP file be?
On our 2016 × 1512 px test image, a HEIC of 474 KB comes out at 558 KB at the default quality (+18 %). Lower the quality slider or set a maximum width and the figure drops further — the page shows the new size as soon as the file is reconverted.
Why won't my iPhone photos open on Windows?
Windows needs paid HEVC codec extensions to display HEIC natively, and many apps never added support. Converting to JPG or PNG solves it permanently — the converted file opens on any device made in the last 25 years.
Why convert to WebP?
WebP gives the same visual quality as JPG or PNG at roughly 25–35% smaller file size, supports transparency, and is read by every modern browser — the best choice for fast-loading websites.
Are my files really private?
Yes. The conversion runs entirely in your browser using its built-in image engine. Your files are never uploaded, stored or seen by any server — you can even disconnect from the internet after the page loads and keep converting.
Is this free? Is there a file limit?
Completely free, no account, no watermark. Convert as many files as you like, up to 200 MB each — the only limit is your device's memory.
Can I convert many files at once?
Yes — drop a whole batch at once. Each file converts independently and you can grab everything in a single ZIP when done.