Will I lose quality when converting?

Only when converting to a lossy format (JPG, WebP, AVIF). Lossless → lossless (PNG → PNG) keeps quality identical.

Is conversion really free?

Yes — every conversion is free and runs in your browser.

Can I convert HEIC files from iPhone?

Yes — use our HEIC to JPG or HEIC to PNG tools.

Do you support animated WebP / AVIF?

Animated WebP yes; animated AVIF is on the roadmap.

Is there a file size limit?

Around 20 MB per image. For larger TIFFs, downsample first with Image Resizer.

Are my images uploaded to a server?

No. Conversion runs entirely in your browser.

Convert Image Formats Png Jpg Webp Avif

Choosing the right image format in 2026 means balancing quality, file size and compatibility. PNG is lossless but huge. JPG is small but lossy. WebP and AVIF beat both — but only if the destination supports them. This guide explains when to pick each, and shows you how to convert between them in your browser in under 30 seconds.

The four formats at a glance

JPG / JPEG — lossy, no transparency, universally supported. Best for photos shared by email or uploaded to legacy portals.
PNG — lossless, supports transparency, ~3× larger than JPG. Best for screenshots, logos, UI mocks.
WebP — Google's modern format. 25–35% smaller than JPG. Supports transparency and animation.
AVIF — newest, 30–50% smaller than WebP. Best for web hero images in 2026.

When to convert

PNG → JPG: shrinking a screenshot for email when you don't need transparency.
PNG → WebP: cutting a logo's file size for a fast-loading website.
JPG → WebP / AVIF: modernizing legacy product photos.
HEIC → JPG: iPhone photos that won't open on Windows or Android.
WebP → PNG: editing in older software (Photoshop pre-2022) that can't open WebP.

Step-by-step

1Open the Image Converter (or pick a direct converter like PNG to JPG).
2Drop your image into the upload zone.
3Confirm the target format — JPG, PNG, WebP or AVIF.
4Click Convert. The conversion runs locally; nothing is uploaded.
5Download the converted file. Original is unchanged.

Tips

Converting PNG → JPG flattens transparency to white. Set a custom background if you don't want white.
JPG → PNG won't restore quality — it just embeds the JPG pixels in a bigger container.
For web, always test AVIF first, then fall back to WebP, then JPG via the <picture> element.

Pick the format by job, not by habit

Most image-format mistakes come from defaulting to whatever the camera or screenshot tool produced. JPG is the right answer for photographs and any rich-detail image where file size matters; lossy compression discards detail your eye can't easily see and produces files 5–10× smaller than PNG. PNG is for graphics with sharp edges, flat color regions, transparency or text — UI screenshots, logos, charts, diagrams. WebP and AVIF are modern formats that beat both for the web: AVIF gives ~50% smaller files than JPG at the same visual quality, WebP about 25–35%.

Quick decision table

Photograph going on the web → AVIF (with WebP or JPG fallback for older browsers).
Photograph for email or messaging → JPG, quality 80–85.
UI screenshot with text → PNG, or WebP lossless.
Logo or icon with transparency → PNG (or SVG if you have the vector source).
Animated graphic → WebP or AVIF; avoid animated GIF for anything over a few KB.
Print-bound photo → JPG at quality 95 or TIFF if your printer accepts it.

Why files shrink (and where the savings come from)

JPG uses a Discrete Cosine Transform that breaks the image into 8×8 blocks and discards high-frequency detail. WebP uses predictive coding borrowed from the VP8 video codec — each block is predicted from its neighbors and only the prediction error is stored. AVIF goes further, using the AV1 video codec's intra-frame compression with much smarter prediction modes. The practical impact: a 4MB phone photo drops to ~800KB as a quality-85 JPG, ~550KB as a quality-80 WebP, and ~350KB as a quality-50 AVIF — all visually indistinguishable from the original at normal viewing distance.

Browser and OS support in 2026

AVIF is supported in every current browser (Chrome, Edge, Firefox, Safari 16+) and iOS/Android operating systems. WebP support is universal at this point. JPG and PNG are universal. The practical implication for the web: ship AVIF as the primary format with a WebP fallback inside a <picture> element, and you'll deliver the smallest images to most users with no manual intervention. For email and messaging, stick with JPG and PNG — many clients still don't render modern formats inline.

FAQ

Will I lose quality when converting?: Only when converting to a lossy format (JPG, WebP, AVIF). Lossless → lossless (PNG → PNG) keeps quality identical.
Is conversion really free?: Yes — every conversion is free and runs in your browser.
Can I convert HEIC files from iPhone?: Yes — use our HEIC to JPG or HEIC to PNG tools.
Do you support animated WebP / AVIF?: Animated WebP yes; animated AVIF is on the roadmap.
Is there a file size limit?: Around 20 MB per image. For larger TIFFs, downsample first with Image Resizer.
Are my images uploaded to a server?: No. Conversion runs entirely in your browser.