In short: An image converter re-encodes a picture from one format to another, such as PNG to JPG, JPG to WebP or HEIC to JPG, in your browser.
About Image Converter (JPG, PNG, WebP, HEIC)
Image formats each have a job. JPG is universal and compact for photos. PNG is lossless and supports transparency, ideal for screenshots, logos and diagrams. WebP, supported by all modern browsers, is typically smaller than both. HEIC is what iPhones save by default — efficient, but many websites and Windows apps still cannot open it.
This converter decodes your images in the browser and re-encodes them in the format you choose. HEIC files are decoded with the open-source heic2any library, which is downloaded only when you add a HEIC file. When converting a transparent image to JPG, transparent areas are filled with the background color you pick.
How to use Image Converter (JPG, PNG, WebP, HEIC)
- Choose or drop images in any common format, including HEIC.
- Select the target format and, for JPG or WebP, the quality.
- Press Convert.
- Download each image, or all of them as a ZIP.
Examples
Drop ten HEIC photos, convert to JPG at quality 85, and upload the ZIP contents anywhere.
Convert a WebP logo to PNG to keep the transparent background for a document or slide deck.
Frequently asked questions
Why does HEIC conversion take longer?
HEIC decoding is done in JavaScript rather than by the browser’s native decoder, so large photos can take a second or two each.
Does converting to PNG improve quality?
No. Converting a JPG to PNG keeps the existing quality exactly but cannot restore detail lost in the original compression.
Can I convert to GIF or ICO?
Not in this version. JPG, PNG and WebP cover nearly all modern uses.
Are my images uploaded?
No. Conversion happens on your device. You can check this yourself: open your browser’s developer tools, switch to the Network tab and use the tool — no request carries your input.
Updated November 2026 · Free, no signup · How we build and test tools