Can I convert HEIC from iPhone?

Yes! Upload HEIC files directly and convert them to JPG or PNG.

Hva er beste format for nettsider?

WebP er anbefalt - 35% mindre enn JPG med samme kvalitet.

🖼️ Convert PNG to WebP

Convert PNG (image format with transparency) to WebP (Google's modern compressed format) completely free. Upload your image and download the result in seconds.

Convert JPG, PNG, WEBP, GIF, and more. Resize, rotate, compress, and filter images — all in your browser with Pillow.

Fra

—

Til

Quality / compression

Resize

Transformations

Rotation: 0°

Filters

🖤 Grayscale ✨ Sharpen

Drag and drop an image here

JPG · PNG · WEBP · GIF · BMP · TIFF · ICO
📱 HEIC / HEIF (iPhone) · Maks 200 MB

Supported image formats

JPG / JPEG

Lossy

Universal standard for photos and web. Small file size, slight quality loss.

📷 Foto, blogg, e-post

PNG

Lossless

Supports transparency (alpha). Perfect for logos, graphics, and screenshots.

🎨 Logo, ikon, grafikk

WebP

Both

Google's modern format. 25–35% smaller than JPG at the same quality.

🌐 Nettsider, nettapper

GIF

256 farger

Supports animation. Limited color palette — best for simple graphics.

📱 Animasjoner, memes

TIFF

Lossless

Professional format for print and archiving. Supports layers and high color depth.

🖨️ Print, archive, DTP

BMP

Uncompressed

Older Windows format. Uncompressed — very large files, but good compatibility.

🖥️ Windows, legacy

ICO

Icon

Used for website favicons and Windows application icons.

⭐ Favicon, app-ikoner

PDF

Document

Convert an image to a PDF document. Useful for sharing and printing.

📄 Utskrift, deling

How to convert images

Upload image

Choose or drag an image. A preview appears instantly.

→

Choose format and adjust

Choose output format, quality, size, rotation, and filters.

→

Download

Pillow converts on the server. Download the finished image.

Frequently asked questions

What's the best format for websites?

WebP is recommended for modern websites — 25–35% smaller than JPG at the same quality. All modern browsers support it. For transparency, choose WebP or PNG.

Can I convert HEIC images from iPhone?

Yes! Upload HEIC files from your iPhone and convert them to JPG or PNG for universal compatibility.

Do I lose metadata (EXIF) during conversion?

EXIF data (camera info, GPS) is kept for JPG. For PNG and WebP, EXIF is removed for privacy.

What happens to transparency (PNG alpha) during JPG conversion?

JPG does not support transparency. Transparent areas are automatically replaced with a white background. Choose WebP or PNG to keep transparency.

Can I resize without losing aspect ratio?

Yes, "Keep aspect ratio" is enabled by default. The image is scaled proportionally within the given dimensions.

What is an image converter?

An image converter changes a file's format, size, and compression. Konvertio uses Pillow — Python's most popular image library — supporting JPG, PNG, WebP, GIF, TIFF, BMP, ICO, and HEIC (iPhone photos).

When should you convert images?

JPG to WebP — reduce file size by 25–35% for faster websites
PNG to JPG — when you don't need transparency and want smaller files
HEIC to JPG — convert iPhone photos to a universal format
Image optimization — komprimer bilder for e-post og sosiale medier
PNG to ICO — lag favicon til nettsiden din

Related services

Need more than image conversion? See also: Video Converter · Document Converter (PDF, Word) · Pricing and API