Convert HDR to ICO

Convert HDR files to ICO in your browser. Free, no upload, no signup.

Output format

ICO

01 — Overview

Why convert HDR to ICO

ICO is a more practical choice than HDR for most modern workflows. Site favicons (favicon.ico) and Windows application/shortcut icons

02 — Comparison

HDR vs ICO

AttributeHDRICO
CompressionLosslessLossless
TransparencyNoYes
AnimationNoNo
Typical file sizeVariesVaries
Browser supportNot natively displayable in browsers — convert to PNG, JPG, or WebP to view or share.Universally supported as a favicon — every browser reads .ico. Not used for general on-page images.

03 — How to

Three steps

  1. 01

    Drop your HDR files

    Drag one or more HDR files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.

  2. 02

    Convert in your browser

    convert.now decodes each HDR and re-encodes it as ICO via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.

  3. 03

    Download the result

    Download a single ICO file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

04 — Pillars

Why convert.now

  • Private

    Files stay in your browser. No upload step. Nothing for anyone to see.

  • Fast

    No queue, no upload wait. Conversion starts the moment you drop a file.

  • Free

    No ads. No file-count limit. No sign-up wall. Just the converter.

05 — FAQ

Frequently asked

No. The conversion from HDR to ICO runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

06 — More

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