HEIC vs JPG vs PNG vs WebP: Which Image Format Should You Use?

I get questions about image formats every single day. And honestly, most of the advice online is either outdated or so generic it's useless. So here's what I've actually learned from building image conversion tools and watching what millions of users actually need.

The Short Version

Photo from your phone? JPEG. Logo or screenshot? PNG. Web developer optimizing a site? WebP. Got HEIC files from an iPhone and need to share them? Convert to JPEG and move on with your life.

That covers 95% of cases. But the remaining 5% is where it gets interesting.

JPEG: 30 Years Old and Still King

JPEG was invented in 1992. It's older than most of the people reading this. And it's still the right choice for photos most of the time.

Why? Universal support. Every device, every browser, every social media platform, every email client, every printer, every operating system on Earth understands JPEG. Try saying that about any other format.

The tradeoff is that JPEG is lossy — it throws away data to make files smaller. But here's the thing: for photos, you can't tell. I've done A/B tests with quality settings from 100 down to 70, and nobody can consistently pick the original below quality 85. At quality 75, I can spot differences only when I zoom to 400% and compare side-by-side.

PNG: When Every Pixel Matters

PNG is lossless. Every single pixel gets preserved exactly. This makes it perfect for screenshots, diagrams, logos, UI elements, and anything with text or sharp edges.

But here's where people go wrong: they use PNG for photos. A 12-megapixel photo as PNG is easily 8-12MB. The same photo as JPEG at quality 85 is 400KB. You're spending 20x the file size for quality differences that are literally invisible in a photograph.

Use PNG when:

• Your image has text in it (screenshots, diagrams)
• You need transparency (logos, icons, overlays)
• You're working with graphics that have sharp color boundaries
• You need pixel-perfect reproduction (UI mockups, pixel art)

Honestly, that's it. For everything else, PNG is overkill.

WebP: The Objectively Better Format Nobody Asked For

Google created WebP in 2010, and by every technical measure, it's better than both JPEG and PNG. Lossy WebP is 25-35% smaller than JPEG at identical visual quality. Lossless WebP is 26% smaller than PNG. It supports transparency. It supports animation.

So why isn't everyone using it? Inertia, mostly. And the fact that until 2022, Safari didn't support it, which meant any image you served as WebP was broken for a huge chunk of web users.

That's no longer true. Safari 16+, Chrome, Firefox, Edge — everything supports WebP now. If you're building a website in 2026 and not using WebP, you're leaving performance on the table.

One caveat: WebP isn't great for editing workflows. Most desktop apps still treat it as a second-class citizen. Save your originals as JPEG or PNG, convert to WebP for final delivery.

HEIC: Apple's Walled Garden Format

Starting with iOS 11, Apple made HEIC the default photo format. And technically, it's great — about 50% smaller than JPEG at the same quality, supports depth maps, live photos, HDR.

The problem? Almost nothing outside Apple's ecosystem reads it natively. Try emailing a HEIC file to someone on Android. Try uploading one to most web forms. Try opening one in older versions of Photoshop. It's a mess.

HEIC to JPEG conversion is the single most-used tool on imagemochi. Not compress, not resize — HEIC conversion. That tells you everything about where this format stands in 2026.

The Format I Actually Recommend

For archival and editing: keep originals in whatever format your camera saves (usually JPEG or HEIC).

For sharing: JPEG. Always JPEG. It works everywhere. Don't overthink it.

For web delivery: WebP, served with a JPEG fallback for the three people still using Internet Explorer 11 in a corporate environment.

For graphics, logos, UI: PNG. Or SVG if it's vector.

That's it. Ignore AVIF for now (support is still spotty), ignore JPEG XL (Chrome dropped it), and ignore anyone telling you to use TIFF for anything other than professional print production.