Guides5 min read
ICO Converter Guide: JPG, PNG, SVG & WebP
Convert any image to a favicon or Windows ICO — JPG, PNG, SVG, WebP — free, private, right in your browser.
Convert JPG to ICO
Turn a JPG photo or logo into a Windows/favicon ICO icon file. Free, instant, private.
Drop your JPG images here
Only JPG files accepted
Why use PixelTools to convert jpg to ico
Multi-size favicon in one file
Packs 16×16, 32×32, and 48×48 frames into a single .ico — the same set generated by dedicated favicon tools.
100% browser-based
Your JPG never leaves your device. The ICO container is assembled locally using the Canvas API — no upload, no server.
Standard-compliant ICO container
Produces a valid ICONDIR + PNG-frame ICO file, readable by every modern browser, Windows Explorer, and favicon checker.
Batch conversion
Drop several JPGs at once and download every generated icon individually or together as a ZIP.
Three steps to convert jpg to ico
- 1
Drop your JPG
Select or drag the .jpg file you want as an icon — usually a logo, initial, or simple graphic. The browser reads it locally, no upload involved.
- 2
Render at favicon sizes
The image is drawn onto three canvases at 16×16, 32×32, and 48×48 pixels, then each is exported as a PNG frame — the same sizes browsers and Windows expect inside an .ico file.
- 3
Pack into an ICO container and download
The three PNG frames are packed behind an ICONDIR header describing their sizes and byte offsets, producing a single valid .ico file ready to use as favicon.ico or a shortcut icon.
Who converts JPG to ICO?
ICO is still the format browsers and Windows fall back to for favicons and shortcut icons. People converting JPG to ICO are usually turning a logo or photo into a site favicon or a desktop/app icon — not looking for a general-purpose image format.
Website favicon
Most CMS platforms and static site generators still expect a favicon.ico in the site root as a fallback for browsers and search engines that don't request the modern PNG/SVG favicon links.
Windows desktop shortcut icons
Windows .lnk shortcuts and .exe files require an .ico resource for their icon — a JPG logo needs to be packed into ICO format before it can be assigned as a custom shortcut icon.
Electron and desktop app builds
Cross-platform app bundlers like Electron Builder require an .ico file for the Windows build target's application icon, even when the rest of the asset pipeline uses PNG or SVG.
Browser bookmark and tab icons
Designers finalizing a brand's visual identity convert their logo JPG to ICO to confirm exactly how it will render as a tiny bookmark, tab, or address-bar icon before shipping it to production.
Frequently asked questions
What sizes are packed into the ICO file?
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The converter renders your JPG at 16×16, 32×32, and 48×48 pixels and packs all three into a single .ico file — the standard set for browser favicons, Windows shortcuts, and taskbar icons.
Why can't I just rename a JPG to .ico?
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ICO is a binary container format, not a raster format like JPG. It stores a small directory header plus one or more embedded image frames at fixed sizes. Renaming a JPG doesn't restructure the bytes, so browsers and Windows will refuse to read it.
Will my photo look good at 16×16 pixels?
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Detailed photos lose a lot of clarity at favicon sizes. For best results, use a simple logo, initial, or icon with bold shapes and high contrast — busy photographic detail tends to turn into a blur at 16×16.
Does the ICO file support transparency?
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Yes, each frame is stored as PNG data inside the ICO container, so transparency is preserved. Since JPG has no alpha channel, a JPG source always produces an opaque icon — convert from a PNG source first if you need a transparent background.
Can I use this file as my website's favicon?
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Yes. Save the downloaded file as favicon.ico in your site's root directory, or reference it with a <link rel="icon" href="/favicon.ico"> tag. All major browsers read the embedded 16×16 and 32×32 frames automatically.
Are my photos uploaded to a server?
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No. The JPG is decoded and packed into the ICO container entirely in your browser using the Canvas API. Nothing is uploaded or stored.
Convert JPG to ICO now
Free, instant, no account needed.