Took the photo on your phone and the marketplace won't accept it? You're probably uploading a HEIC (iPhone) or WebP file. Here's how to convert to JPG and get under the size limit.
Why your photo gets rejected
- HEIC is Apple's default photo format. It saves space on your phone but most marketplaces and many tools don't accept it.
- WebP is a modern web format — great for websites, but often rejected by sellers' upload forms.
- File too large. Many platforms cap uploads (often around a few MB). A high-res phone photo can easily exceed that.
How to fix it
- Upload your HEIC or WebP file (or a batch) to the Image Converter.
- Choose JPG as the output format.
- Pick a quality — "Balanced" is a good default; "Smaller file" if you're fighting an upload limit.
- Download. The tool shows how much smaller the file got.
WebP to JPG
WebP is a modern web format — you often get one when you save an image from a website. Marketplace upload forms frequently reject it. Convert WebP to JPG and it'll upload anywhere.
HEIC to JPG
HEIC is the iPhone's default photo format. It's efficient, but many sites and older devices can't open it. Convert HEIC to JPG so your photo works everywhere.
PNG to JPG
PNG is great for graphics and screenshots, but the files are large. Convert PNG to JPG to shrink a photo for faster uploads — just note you'll lose transparency, so keep PNG if you need a cutout.
AVIF and the newer formats
AVIF is the newest, smallest format. Convert to AVIF for the tiniest files on your own website, or convert AVIF to JPG when a marketplace doesn't support it yet.
JPG vs. PNG vs. WebP vs. AVIF — which to pick
- JPG — smallest widely-supported files, no transparency. The right choice for photos and marketplace uploads.
- PNG — lossless and supports transparency. Use it for cutouts (see the Background Remover) or graphics with sharp edges.
- WebP — small and supports transparency. Ideal for your own website; less so for marketplaces.
- AVIF — the smallest of all and supports transparency, but support is still catching up. Best for the web, not uploads.
Reducing file size without wrecking quality
Dropping quality from 100 to ~80 usually cuts file size dramatically with no visible difference. If you also need exact dimensions for a marketplace, resize first with the Image Resizer, then convert.