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MediaShed

Convert to any image format.

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First visit downloads ~8MB, cached after that

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How to convert an image in 3 steps

  1. Upload any image. Drop it on the page or click to browse. PNG, JPG, WebP, AVIF, TIFF, GIF, BMP, HEIF, and SVG all work.
  2. Pick a format and adjust settings. Choose your output format. For JPG, WebP, and AVIF you can drag the quality slider to balance size against detail. Open Advanced to resize.
  3. Download the result. See the original and converted image side by side with the file size difference. Hover the result to download.

When to use each format

PNG is lossless. Every pixel stays exactly the same. Use it for screenshots, logos, icons, or anything with text and hard edges. Files are larger because nothing gets thrown away.

JPG compresses photos well and works everywhere. It does not support transparency. The go-to format when you need small files and do not care about pixel-perfect accuracy.

WebP beats both PNG and JPG on file size at comparable quality. Supports transparency. Every modern browser handles it. If you are optimizing images for a website, this is usually the right choice.

AVIF compresses more aggressively than anything else. You get sharp images at surprisingly small file sizes. Browser support is newer — Chrome and Firefox handle it well, Safari caught up recently.

Converting PNG to WebP

This is one of the most common conversions. A typical PNG screenshot might be 1-3 MB. The same image as a lossless WebP is usually 20-30% smaller with no quality loss at all. As a lossy WebP at quality 85 it can drop to 5-10% of the original size. If you are building a website, switching from PNG to WebP is one of the easiest ways to speed up page load times.

Converting JPG to AVIF

AVIF is the most efficient photo format available today. A 500KB JPG at quality 85 typically becomes a 100-150KB AVIF at the same visual quality. The tradeoff is encoding speed — AVIF takes longer to compress than JPG or WebP. For batch processing this matters, but for single images the wait is a few seconds at most.

A real image engine, not a canvas hack

Most browser-based converters use the Canvas API to re-encode your image. That gives you basic quality control and nothing else. This tool runs libvips — the same image processing library used by Sharp, Cloudinary, and other professional tools — compiled to run in your browser. You get better compression, proper color handling, and full encoder control.

Your files never leave your browser

The image engine downloads once and runs locally on your device. There is no upload, no server queue, and nobody else sees your files. Convert sensitive documents, private photos, or client work without worrying about where it ends up. Works offline after the first load.

FAQ

Is there a file size limit?
No. Very large images may process slower on older devices but there is no restriction from our side.
Does converting lose quality?
PNG is lossless so nothing changes. JPG, WebP, and AVIF are lossy — you control how much with the quality slider. Higher values keep more detail.
Does it preserve transparency?
PNG, WebP, and AVIF keep the alpha channel. JPG does not support transparency so you pick a background color to replace it.
Why is the first conversion slow?
The image engine is about 8 MB. It downloads once on first use and gets cached in your browser after that.
What input formats are supported?
Almost everything. PNG, JPG, WebP, AVIF, TIFF, GIF, BMP, HEIF, and SVG all work as input.
How is this different from other converters?
Most online converters upload your file to a server. This one uses a real image processing engine running in your browser. Better compression, more formats, and your files stay private.
Can I resize while converting?
Yes. Open the Advanced section to set a custom width and height. Aspect ratio locks by default so the image does not stretch.
Is there an API?
Not yet. For now the tool is browser-only.