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SlimFile

Make a favicon

Drop a logo and get back every icon a website needs — the .ico plus the PNG sizes browsers and phones ask for.

Choose your images

up to 20 at a time.

JPGPNGWebPAVIFHEICGIFMax 15 MB each

Why so many sizes

A browser tab wants 16 or 32 pixels, a bookmark bar wants more, an iPhone home screen wants 180, and Android wants 192 or 512 for the install prompt. Handing every one of them a single large image means each scales it down itself, usually worse than doing it properly once.

The .ico holds the 16, 32 and 48 pixel versions in one file, which is still what older browsers reach for first. Modern ones prefer the PNGs.

A wide logo is fitted inside a square rather than cropped to one, so the ends are kept and the space around them stays transparent. Start from something square and simple if you can — at 16 pixels there is room for a shape, not for words.

How to use Favicon Generator

  1. Add your image

    Drop a JPG, PNG, WebP, AVIF, HEIC, GIF file onto the page, or click to choose one. Up to 15 MB.

  2. Choose your options

    Adjust any settings the tool offers, or keep the defaults — they are chosen to be right for most files.

  3. Download the result

    Save the result straight to your device.

Why use SlimFile for this

  • Every size in one go

    A .ico with 16, 32 and 48 pixel versions, plus the PNG sizes phones and browsers ask for.

  • HTML included

    Copy the ready-made lines into your site's head — no guessing which tags you need.

  • Free, no sign-up

    No account, no email address, no trial that runs out.

  • No watermark

    What you download is clean — nothing added to your file.

  • Deleted within an hour

    Uploads and results are removed automatically about an hour after processing. We never look inside them.

Questions

How do I add a favicon to my website?
Generate the files here, upload them to the root of your site, and paste the HTML snippet shown into the head of your pages.
Why do I need so many sizes?
A browser tab wants 16 or 32 pixels, an iPhone home screen wants 180, and Android asks for 192 or 512 when someone installs your site. Give them all one large image and each scales it down itself, usually worse than doing it properly once.
What is inside the .ico?
The 16, 32 and 48 pixel versions, in one file. It is still what older browsers reach for first, which is why it is worth having alongside the PNGs even though modern browsers prefer those.
My logo is wide. Will it be cropped?
No. A wide logo is fitted inside the square with transparent space around it, so the ends are kept. Cropping to a square would cut them off, which is rarely what anyone wants from their own logo.
What makes a good favicon?
Something square, simple and high contrast. At 16 pixels there is room for a shape or a single letter, not for words — a full logo with a tagline turns into an unreadable smudge at that size.

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