PNG to ICO Converter
Turn a PNG into an ICO favicon for your website — transparency kept, scaled to fit. Free, private, made in your browser.
Make a favicon from a PNG
An ICO file is what browsers use for the little favicon in a tab or bookmark. Lumisphere wraps your PNG into an ICO right in your browser, keeping transparency and scaling it to fit (up to 256 px). Drop a square PNG of your logo, download favicon.ico, and drop it into your site’s root. No upload, sign-up or watermark.
- 1Add. Drop, paste or browse for an image (or several).
- 2Choose. Pick PNG, JPG, WebP or AVIF — tune quality for the lossy ones.
- 3Download. Save the converted file, or the whole batch.
Other conversions: Image Converter · PNG to WebP · WebP to PNG · JPG to PNG · PNG to JPG · SVG to PNG · JPG to WebP · WebP to JPG · AVIF to PNG · AVIF to JPG · AVIF to WebP — the same private, in-browser converter. Need transparency instead? Try the background remover (no upload).
Good to know
How do I convert a PNG to ICO?
Drop a square PNG in, choose ICO, and download favicon.ico — it’s scaled to fit 256 px and keeps transparency, ready for your site.
What size should my PNG be?
A square PNG works best — 256×256 or 512×512. Lumisphere scales it to fit within 256 px, the largest size an ICO stores.
Does the favicon keep transparency?
Yes. The ICO wraps a PNG internally, so a transparent background stays transparent in the icon.
How do I add the favicon to my site?
Put the downloaded favicon.ico in your website’s root folder, or reference it with <link rel="icon" href="/favicon.ico"> in your HTML <head>.
Is it free and private?
Yes — no sign-up, no watermark, no limit, and the PNG is converted on your device and never uploaded.