Free Online PNG Converter

Convert JPEG, WebP, AVIF, and other images to PNG format. Lossless quality with transparency support—everything happens in your browser.

DROP YOUR IMAGES HERE

or click to browse files

Supports JPEG, WebP, AVIF, GIF, BMP • Up to 10 images

All processing local + server-side transient, no files stored.

How To Convert Images to PNG

01

Feed Source Assets

Drop any JPEG, WebP, or AVIF graphic into the upload zone. The client canvas deconstructs the pixel grid locally, preparing the lossless extraction engine.

02

Trigger Lossless Encoding

Hit convert and the in-browser PNG encoder maps every single pixel without discarding any visual data. Alpha transparency channels are generated automatically from supported inputs.

03

Export Pixel-Perfect Files

Download your newly minted PNGs one at a time or bundle the entire batch into a single ZIP archive. Zero quality degradation guaranteed.

TIP: PNG is ideal for graphics, logos, screenshots, and images requiring transparency. For photos, consider JPEG or WebP for smaller file sizes.

Key Features

Zero-Loss Encoding

Every single pixel survives the conversion intact. No compression artifacts, no color banding, no data thrown away.

Alpha Channel Native

PNG carries full 8-bit transparency per pixel. Ideal for logos, icons, and layered composites.

Isolated Pipeline

Encoding runs entirely inside a sandboxed browser canvas. No network calls, no cloud servers involved.

Instant Rasterization

WebAssembly-powered codec fires within milliseconds. You see results before the progress bar finishes.

Batch Archiving

Convert dozens of assets at once and pack them into a single compressed ZIP download.

Universal Rendering

PNG is universally decoded by every browser, operating system, and print workflow in existence.

Quality vs Size Guide

Interactive demo: See how quality affects file size in real-time

Demo Quality80%

Sample: 2MB Photo

PNG (Lossless)
2.00 MB100% Quality
WEBP
1.23 MB-38%
JPEG
1.34 MB-33%
AVIF
1.02 MB-49%

Quality Recommendations

90-100%Print Quality

Professional printing • Archival • Large files

75-89%High Quality

Portfolio • Social media • Good balance

60-74%Web Optimized

Websites • Fast loading • Recommended

10-59%Maximum Compression

Thumbnails • Previews • Visible quality loss

Frequently Asked Questions

The browser decodes your JPEG's compressed pixel data onto an invisible HTML canvas, then re-encodes those raw pixels using the PNG deflate algorithm. This means every color value from the decoded JPEG is preserved exactly in the new PNG—you'll never lose additional quality during this step.

Often, yes. PNG uses lossless compression, which means it keeps every pixel intact instead of discarding visual data the way JPEG does. A 500KB JPEG photograph might become a 2-3MB PNG. That trade-off buys you perfect reproduction and editing flexibility.

If your source image (like a WebP or AVIF) contains an alpha transparency channel, the PNG output will preserve it completely. Sources without transparency (like standard JPEGs) will produce a fully opaque PNG since there's no alpha data to carry over.

Yes. Drop your entire batch into the upload zone and the WebAssembly encoder will process them sequentially at full speed. Once finished, grab everything in a single ZIP download rather than clicking through files individually.

Not at all. The entire PNG encoding pipeline runs inside your browser's sandboxed JavaScript runtime. Your source files never leave your device, and no network requests carry image data. Close the tab and every trace disappears.