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Image Converter
Image Converter rewrites pictures between JPG, PNG, WebP, BMP and ICO using the browser's own encoders, with an SVG branch for vector output. Choose a target format, set the quality for lossy formats and convert as many images as you like in one run.
How to use Image Converter
- Drop in one or more images (JPG, PNG, WebP, GIF, BMP, ICO or SVG).
- Pick the output format and, for JPG or WebP, the quality level.
- Convert and download each converted file.
Where Image Converter is useful
- Turning a PNG screenshot into a smaller WebP for a website.
- Producing JPGs from a folder of design exports before uploading them.
- Converting an icon to ICO or a logo to SVG-compatible output.
Formats, algorithms and limits
Raster conversion draws the image to a canvas and re-encodes it: JPEG for photographs, PNG for crisp edges and transparency, WebP for the best size-to-quality ratio in modern browsers. Transparency is preserved in PNG and WebP output, but JPEG output has no alpha channel, so transparent areas are flattened.
Troubleshooting and honest limits
- Convert to PNG when the image has text or sharp edges — JPEG artefacts show up clearly on line art.
- Use quality 80-85 for photographs: the size saving is large and the difference is invisible at normal viewing sizes.
- Converting JPEG to PNG does not restore lost detail; it only changes the container.
Frequently asked questions
Which format should I choose?
WebP for websites, PNG when you need transparency or lossless line art, JPEG for photographs you will email, and ICO only for favicons.
Does converting lose quality?
Moving to a lossy format such as JPEG always re-encodes the picture, so there is some loss. Converting to PNG is lossless, and converting between lossy formats repeatedly does degrade the image over time.
Can I convert many files at once?
Yes. Every image in the queue is processed in sequence on your device and offered as a separate download.
Is my image uploaded?
No. Decoding and encoding happens inside the browser tab, so the picture never leaves your machine.
Related tools
Page written and reviewed by the FreeConvertio engineering team on 2026-10-14. Image Converter runs entirely in your browser — no uploads, no account and no daily limits.