Is this JPG to ICO converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple JPG files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

Will the image quality change after conversion?

It depends on the formats involved. Converting to a lossless format like PNG preserves every pixel exactly. Converting to a lossy format like JPEG or WebP applies compression — we default to 85% quality, which looks identical to the original for almost all images. You won't notice a difference unless you zoom in pixel-by-pixel.

Do you support batch image conversion?

Yes — drop multiple images at once and they all convert in parallel. Free accounts handle up to 5 at a time; Pro is unlimited. Download everything as a single ZIP when you're done.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

JPG to ICO Converter — Free, Online, No Upload

How to convert JPG to ICO online

1
Drop your JPG file
Drag and drop your Joint Photographic Experts Group file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs Joint Photographic Experts Group → Windows Icon Format entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your ICO
Your Windows Icon Format file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

JPG vs ICO: format overview

JPG

Joint Photographic Experts Group

Joint Photographic Experts Group · 1992

Compression: lossy
Color depth: 8-bit
Transparency: No

✓ Universal compatibility — supported everywhere
✓ Excellent compression for photos
✗ Lossy — each save degrades quality

ICO

Windows Icon Format

Microsoft · 1985

Compression: lossless
Transparency: Yes

✓ Multiple resolutions in a single file
✓ Required format for Windows app icons and favicons

JPG magic bytes: FF D8 FF

ICO magic bytes: 00 00 01 00

Why convert JPG to ICO?

Every website needs a favicon — the small icon that appears in browser tabs, bookmarks, and mobile home screens. Browsers look for favicon.ico at the root of your domain by default, and without one every tab shows a blank or generic icon. Most people have their logo as a JPG, not as a multi-resolution ICO file. Creating an ICO manually in a graphics editor requires the right export plugin and knowledge of the format — converting from JPG is the faster path.

Converting a JPG to ICO produces a properly formatted favicon file that you can place at the root of your web server or specify in your HTML head with a link tag. Modern ICO files contain multiple resolution variants — typically 16x16, 32x32, and 48x48 pixels — so the icon looks sharp in browser tabs, Windows Explorer, and on high-DPI screens. Once you have your favicon.ico, drop it into the public folder of your Next.js, Astro, or static site, or upload it to the root directory of your hosting account.

Favicons are tiny, so the source JPG should be a simple, high-contrast graphic that reads clearly at 16 pixels wide. Detailed photography or text-heavy logos become unrecognisable at favicon size. Crop your JPG to a square before converting — favicon.ico is always square, and non-square images will be stretched. Start from a simplified version of your logo for the best result.

Quality & file size: JPG to ICO

Typical file sizes: JPG 2–5 MB → ICO 10–100 KB.

Converting from lossy JPG to lossless ICO will not recover detail the JPG codec already discarded — but the output will not degrade any further. This is useful when you need a lossless format for editing or compatibility without additional compression artifacts.

Color depth: JPG supports 8-bit, ICO supports standard color.

Transparency: JPG does not support transparency. ICO preserves transparency.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your JPG files are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.