Flimpa

HEIC to ICO

Convert HEIC to ICO

Upload a HEIC file and download ICO. Typical use: icons and favicons up to 256×256.

How it works

Drop one HEIC file (up to 10 MB), start conversion, and download the result. The file is processed on the server.

ICO size: output is fitted to at most 256×256. Multi-size ICO packs are not created.

Security and privacy

  • Encryption at rest

    Files are encrypted during storage with AES-256-GCM using a unique key per file

  • Auto-deletion

    Uploaded and processed files are removed after the session ends

  • Temporary sessions

    Processing sessions expire automatically and are not kept as a permanent archive

  • Protected download links

    Downloads require a short-lived access token — not a public permanent URL

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FAQ

One HEIC file with the extension is supported.heic, .heif up to 10 MB in size. The image must contain no more than 40 million pixels; a corrupted file or an unsupported codec version may not open.

Upload your HEIC file, click start conversion, and download the ICO result.

Yes. Files are transferred over a secure connection, encrypted while stored on the server, and automatically deleted. Flimpa does not store documents permanently and does not use them to train models.