100% local
IMAGE

Convert ARW
to HDR

Right-sized output for the use case.

Converting from ARW to HDR aligns the file with the encoding choices the downstream pipeline expects. The result is a deliverable that fits naturally into the destination workflow.

— Drop area

WHY CONVERT

Why convert ARW to HDR

01

Right-sized output for the use case

Converting from ARW to HDR aligns the file with the encoding choices the downstream pipeline expects. The result is a deliverable that fits naturally into the destination workflow.

02

Acceptance by downstream tools

HDR is the format most receiving systems expect for this kind of content. Converting upstream avoids the rejection and silent re-encoding that often happen when ARW reaches an unprepared pipeline.

03

Portable, predictable file format

HDR is well documented and decodable by long-lived tooling, which matters for archives, deliverables, and any file that needs to outlive the software that created it.

— How to convert

ARW to HDR in three steps.

  1. 01

    Open LocalConvert

    Visit this page on any modern browser — no install, no signup, no plugin.

  2. 02

    Drop or select your ARW file

    Drag your ARW into the drop area, or click to pick one from your device.

  3. 03

    Click Convert

    Conversion runs entirely in your browser. When it's done, your HDR file downloads to your device.

QUALITY & FIDELITY

Quality and fidelity

  • Lossless to lossless: conversion is mathematically reversible in principle.
  • Metadata is dropped: the target format does not carry it natively.
Transparency ARW ✗ HDR ✗
Color depth 14-bit linear sensor data 32-bit float RGB (HDR)
Metadata preserved ✗

FORMAT SPECS

Format specifications

ARWHDR
Extensions.arw.hdr .pic
MIME typesimage/x-sony-arwimage/vnd.radiance
Introduced20051989
MaintainerSonyRadiance / Greg Ward
Magic #——
SpecView spec ↗View spec ↗

COMPATIBILITY

Where these formats work

ARW

Windows
App
macOS
Native
iOS
App
Android
App
Chrome
—
Firefox
—
Safari
Native
Edge
—

Why LocalConvert

How LocalConvert compares

CategoryLocalConvertCloud converters
PRIVACYFiles never leave your device. The whole pipeline runs in your browser via WebAssembly.Files travel to a remote server, sit in queue storage, and may be retained for analytics or moderation.
COSTFree, no signup, no daily quotas.Often free for small files; paid tiers for batch / large / commercial use.
LIMITSLimited only by your device's memory and CPU. Multi-GB files OK on desktop.Typical 100 MB to 1 GB per-file caps, plus rate limits.
— The formats
From · ARW

Sony Alpha Raw

Sony's proprietary RAW image format.

Typical uses
Photos shot on Sony cameras.

To · HDR

Radiance HDR

A high-dynamic-range raster format used in 3D rendering and HDR photography.

Typical uses
HDR photography, environment maps for 3D.

— FAQ

Frequently asked.

Is ARW to HDR conversion free?

Yes. LocalConvert is completely free, with no signup and no per-file or per-day limits.

Do my files get uploaded anywhere?

No. ARW to HDR conversion happens entirely inside your browser using WebAssembly — your file never leaves your device.

What's the maximum file size?

There's no fixed cap — the practical limit is your device's available memory. Very large files may take longer or fail on low-RAM devices.

Does it work offline?

Yes — once the page has loaded, ARW to HDR conversion works without an internet connection. Re-open the page once to cache it.

Will conversion preserve quality?

LocalConvert uses the industry-standard tools (FFmpeg, ImageMagick, Pandoc) — quality matches what professionals use on the command line. Lossy formats will still lose some quality on each re-encode.

— Related

Or convert these.

ARW AVIFARW BMPARW EPSARW ICOARW JFIFARW JPEG
Browse all conversions
REFERENCES

Format references

ARW

HDR

RELATED CONVERSIONS

More like this

Last verified:

100% local conversion.

ARW to HDR is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.