Convert JP2 to ICO
Convert JP2 files to ICO locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert JP2 to ICO
- Drop your .jp2 files above, or click Upload Files. You can add many files at once.
- ICO is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .ico files as soon as each one finishes.
What to know about JP2 to ICO conversion
- Transparency is preserved: ICO supports an alpha channel just like JP2.
- Images larger than 256×256 pixels are scaled down automatically, the maximum size of a Windows icon.
- ICO is best for website favicons and Windows icons, and opens in browsers, Windows and icon editors.
JP2 vs ICO
| Feature | JP2 (JPEG 2000) | ICO (Windows Icon) |
|---|---|---|
| Compression | lossy or lossless | lossless |
| Transparency | Yes | Yes |
| Animation | No | No |
| Best for | medical imaging, digital cinema and archives | website favicons and Windows icons |
| Opens in | specialized viewers, GIMP and Photoshop | browsers, Windows and icon editors |
JP2 (JPEG 2000): A wavelet-based image format used in digital cinema, medical imaging, and archival workflows.
ICO (Windows Icon): An image file format for computer icons, widely used as website favicons.
Conversion options
- Resize by width, height or both (aspect ratio is preserved)
- Filters: grayscale, sepia, blur and sharpen
- Custom output file name
Frequently asked questions
Is it safe to convert JP2 to ICO here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several JP2 files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert ICO to JP2.
Convert JP2 to other formats
- JP2 to JPG
- JP2 to PNG
- JP2 to PDF
- JP2 to WEBP
- JP2 to GIF
- JP2 to SVG
- JP2 to AVIF
- JP2 to TIFF
- JP2 to BMP
- JP2 to JXL
- JP2 to PSD
- JP2 to TGA
Convert other formats to ICO
- JPG to ICO
- PNG to ICO
- PDF to ICO
- WEBP to ICO
- HEIC to ICO
- GIF to ICO
- SVG to ICO
- AVIF to ICO
- TIFF to ICO
- BMP to ICO
- JXL to ICO
- PSD to ICO
See every JP2 converter and ICO converter, or browse the full converter directory.