Image Converter

About this tool

Different jobs want different image formats: WebP for a smaller website payload, PNG to keep an alpha channel, JPG for email attachments and legacy systems. This tool re-encodes images with the Canvas API in your browser, so a whole batch can be converted in one go.

Batch selection and batch conversion are both supported, and results can be downloaded one by one or bundled into a ZIP. Converting to JPG fills transparent areas with white because the format has no alpha channel; WebP supports both transparency and lossy compression and is the recommended format for the modern web.

Features

• Convert freely between JPG, PNG and WebP
• Select and convert many images in one batch
• Adjustable quality - WebP is usually the smallest at equal quality
• Download files individually or as a single ZIP

How to use

1. Drop or select the images you want to convert - multiple files are fine
2. Choose the target format (JPG, PNG or WebP) and adjust quality if needed
3. Click Convert and wait for the batch to finish
4. Download each image, or take the whole ZIP

Frequently asked questions

Can I just rename a PNG file to JPG?

Not recommended. Renaming only changes the file name - the data inside is still PNG-encoded, and some platforms misread or reject it. Convert it properly with this tool so the data format matches the extension and compatibility is guaranteed.

Are JPG and JPEG the same format?

Yes - JPEG is the full name from the Joint Photographic Experts Group, and JPG is the three-letter abbreviation popularised by early Windows filename limits. They are identical; the .jpg and .jpeg extensions this tool outputs are equivalent.

Will transparency be lost when converting WebP to JPG?

Yes. JPG has no alpha channel, so transparent areas are filled with white and brightness can shift slightly against the white background. Choose PNG or WebP output if you need to keep transparency.

Does JPG to PNG make the image sharper? Does converting reduce quality?

JPG to PNG does not add sharpness: PNG is lossless and stores whatever pixels exist after the earlier JPG compression, so lost detail cannot be recovered. Converting to a lossy format (JPG, or WebP in lossy mode) re-encodes once; at 90% quality or above the difference is effectively invisible.

Can I convert many images at once and download a ZIP?

Yes. Select several images for batch conversion, then download each file or take the whole ZIP. Everything runs locally - images are never uploaded.

Does converting reduce image quality?

Converting to a lossy format (JPG, or WebP in lossy mode) re-encodes the data once; keep quality at 90% or above and the difference is effectively invisible. Converting to PNG is lossless. Your original file is never modified.

Why do some images fail to convert?

The file is usually damaged or its extension does not match the real format. Very large images can also exhaust browser memory - limit the width with the Image Compressor first, then convert.

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