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Image Format Converter — JPG ↔ PNG ↔ WEBP

Convert images between JPG, PNG and WEBP. Conversion runs locally in your browser using the Canvas API — your file never leaves your device.

Drop an image here, or click to choose a file

Why convert image formats?

Different formats are good at different things. JPG compresses photographs efficiently with lossy compression but does not support transparency. PNG stores any image losslessly with full alpha support but produces large files for photos. WEBP, designed by Google in 2010, beats both: 25-35% smaller than JPG at the same quality, with optional alpha and animation support. Most modern browsers (98%+ globally) support WEBP.

A common workflow is: take a screenshot or photo (often saved as PNG by the OS), convert to WEBP for the web (drastically smaller download), or to JPG when WEBP is not available (older email clients, legacy software). This converter does the conversion entirely in your browser using the Canvas API — no upload required.

How to use this tool

  1. Drop an image into the dashed area or click to pick a file. JPG, PNG, WEBP, GIF, BMP and SVG inputs are all accepted (anything the browser can decode).
  2. Choose the target format. For JPG and WEBP, adjust the quality slider (10-100). PNG is always lossless.
  3. Click Convert and then Download. The size delta vs the original is shown next to the output.

Frequently asked questions

Is the image uploaded to a server?

No. The conversion uses the browser's Canvas API on your local device. The image bytes never leave your machine, which makes the tool safe to use even with private photos.

What is the maximum file size?

There is no hard limit beyond your browser's memory. Very large images (>50 MP) may take a few seconds to decode and may run out of memory on mobile devices. For huge batches or RAW files, prefer a desktop tool.

Why does converting JPG to PNG make the file larger?

PNG is lossless — it stores every pixel exactly. JPG is lossy — it discards detail to save space. Going JPG → PNG preserves the (already-degraded) JPG appearance with no further loss but at the cost of a much bigger file. Going JPG → WEBP usually shrinks the file.

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