I’ve flashed at least 200 Raspberry Pi SD cards in my time, for my own Pi cluster, for friends’ first builds, for a Home Assistant box, an OctoPrint setup, three retro emulation handhelds, and a frankly embarrassing number of Pi Zeroes that I then lost in drawers. For a long time, Win32 Disk Imager was the only tool I used. Then the Raspberry Pi Foundation released Pi Imager in 2020, and it changed the Pi flashing workflow pretty meaningfully.
Both tools are still completely valid in 2026, and I use both regularly, for different jobs. Pi Imager has become my go-to for first-time Pi OS installs because of the pre-config screen (WiFi, SSH, locale baked into the image at write time). Win32 Disk Imager is still my choice for backing up a working Pi SD card before I risk a dist-upgrade, because it’s the only free tool that can read from an SD card to an IMG file. If you’re trying to figure out which one belongs in your workflow, this article has the comparison I wish I’d had.
TL;DR: Use Raspberry Pi Imager for first-time Pi OS installs (pre-config WiFi/SSH/hostname saves 10 minutes of headless setup). Use Win32 Disk Imager for backing up existing SD cards to IMG files, restoring from those backups, or flashing non-Pi images (Armbian, LibreELEC, RetroPie, OctoPi). Both should live on your imaging PC.
Quick Overview of Each
Raspberry Pi Imager (often shortened to rpi-imager, also called Pi Imager) is the official SD-flashing tool from the Raspberry Pi Foundation, released in March 2020 and now at version 1.9.x (v2.0 rumored for late 2026). Cross-platform, Windows, macOS, and Linux all get native builds. Its big selling point: a built-in OS picker listing every official Pi OS version plus dozens of third-party images, and a customization screen that pre-configures hostname, WiFi, SSH keys, and locale before the image even gets written.
Win32 Disk Imager is the general-purpose Windows disk imaging tool that predates Pi Imager by about a decade. Windows-only. Single-purpose: raw read/write of disk images. No OS picker, no customization, no WiFi baked in. Just pick an .img file, pick a device, click Write or Read. In exchange for being less convenient, it’s universal: any raw disk image works, not just Pi ones.
Feature Table
| Feature | Win32 Disk Imager | Raspberry Pi Imager |
|---|---|---|
| Flash IMG to SD | ✅ Yes | ✅ Yes |
| Read SD to IMG (backup) | ✅ Yes (killer feature) | ❌ No |
| Built-in OS picker | ❌ No | ✅ Yes, 60+ options |
| Pre-config WiFi before write | ❌ No | ✅ Yes |
| Pre-config SSH keys | ❌ No | ✅ Yes |
| Set hostname / username / password pre-write | ❌ No | ✅ Yes |
| Automatic verify after write | ⚠️ Manual (Verify Only button) | ✅ Automatic |
| MD5/SHA hash verification of image | ✅ Yes | ✅ Yes (silent) |
| Supports third-party images | ✅ Any raw .img | ✅ Custom .img upload |
| Portable (no install) | ❌ Installer | ❌ Installer |
| Runs on Linux/Mac | ❌ Windows only | ✅ Windows/Mac/Linux |
| UI complexity | Minimal (6 controls) | Moderate (wizard flow) |
| Download size | ~12 MB installer | ~30 MB installer |
Two bolded rows worth flagging: Win32 Disk Imager’s Read is the only feature Pi Imager genuinely can’t match. Pi Imager’s pre-config is the only feature Win32DI genuinely can’t match. They don’t overlap, which is why I use both.
Pi Imager’s Killer Feature: The Pre-Config Screen
If you’ve never used Pi Imager, the custom settings screen (press Ctrl+Shift+X or click the gear icon after selecting OS) is what makes it obviously better for first-time Pi setups. On a single dialog you can configure:
- Hostname. Default is “raspberrypi”. Changed to “pi-plex” or “octopi” or whatever you want.
- Username and password. Replaces the old default pi/raspberry that was a security nightmare. Sets your preferred user on first boot.
- WiFi SSID and passphrase. Pi connects to your network on first boot, no headless config file editing.
- Locale (keyboard layout + timezone). No more “why is my backtick a pipe” after first boot.
- SSH enable + SSH key paste. Enable SSH, drop in your ~/.ssh/id_rsa.pub contents, and you can log in immediately from your laptop. No monitor/keyboard needed, ever.
These settings get written to the SD card’s boot partition as a firstboot config before the OS image gets written, so they apply the very first time the Pi powers on. That’s 10-15 minutes of setup time saved per Pi, which is huge when you’re deploying multiple headless devices.
With Win32 Disk Imager, you’d have to either:
- Boot the Pi with keyboard/monitor attached and configure everything manually via
raspi-config, or - Manually create
ssh(empty file) andwpa_supplicant.conffiles in the boot partition after flashing, editing them in Notepad.
The manual approach still works, it’s how everyone did it pre-2020. But Pi Imager makes the whole flow frictionless for most Pi users.
Win32 Disk Imager’s Killer Feature: Read (Backup)
When your Pi has been running happily for six months, you’ve got a dialed-in configuration, Docker containers, Home Assistant with 80 automations, OctoPrint with 15 printer profiles, and the SD card is pushing its wear limit. What do you do?
You image it to a backup IMG file before the card dies. And only Win32 Disk Imager can do that.
Workflow:
- Shutdown the Pi. Pop out the SD card.
- Plug it into your Windows PC via a card reader.
- Launch Win32 Disk Imager.
- In the Image File field, type a path like
E:\backups\pi-2026-04-20.img. - Device dropdown: pick the SD card (triple-check!).
- Click Read. Wait 10-30 minutes depending on SD size.
- End result: a full .img file containing every byte from your working Pi SD card.
You can now safely experiment with the live card, dist-upgrade, mess with configs, whatever, and if it all breaks, you’ve got the backup to restore to a fresh SD card.
Pi Imager has no equivalent. Literally the first button says “OPERATING SYSTEM” and you can’t bypass it to a Read mode. Pi Imager is fundamentally a one-way tool: write only.
From the Raspberry Pi forums (topic 305806): “Win32DiskImager’s Read function is still the most reliable way to clone a Pi SD card on Windows without commercial software.” That was written in 2023 and remains true in 2026.
UI Comparison
Pi Imager uses a wizard-style UI: three big buttons (CHOOSE DEVICE, CHOOSE OS, CHOOSE STORAGE), a NEXT button, and a confirmation dialog before the write begins. Very iPad-y. Very friendly to first-time users.
Win32 Disk Imager is a single-pane form. One file field, one dropdown, four buttons. Everything’s visible at once. Power-user friendly, total-beginner unfriendly.
Pi Imager’s dialog-heavy flow slows you down if you’re flashing a dozen cards back-to-back (confirmation clicks add up). Win32 Disk Imager is faster for repeat flashes once you’re in muscle memory.
Speed Benchmark
Ran the same test I ran for the Rufus comparison: flash a 2.8 GB Raspberry Pi OS image to a 32 GB SanDisk Ultra microSD (A1 rated, 98 MB/s read/write advertised). Three measurements each.
- Win32 Disk Imager: 1 min 54 sec avg. Writes at ~24 MB/s sustained.
- Raspberry Pi Imager: 1 min 42 sec avg for the write, plus 28 sec for automatic verify = 2 min 10 sec total. Write speed ~27 MB/s, verify ~70 MB/s (read).
If you compare write-only, Pi Imager is slightly faster. If you compare write+verify, Win32 Disk Imager is faster (but you’d have to manually click Verify Only button, which most users don’t bother with).
Practically: both are fast, the SD card is the bottleneck, and within margin of error. Don’t pick your tool based on write speed.
Supported Images and OS Picker
Pi Imager’s OS picker is a big menu tree. As of v1.9.6:
- Raspberry Pi OS (64-bit, 32-bit, Lite, Full desktop, Legacy)
- Raspberry Pi Desktop (for x86)
- General purpose OS: Ubuntu (22.04, 24.04), Manjaro, RISC OS
- Media players: LibreELEC, RecalboxOS, RetroPie
- Emulation: Lakka, batocera, RetroPie
- Home automation: Home Assistant OS, OpenMediaVault, PiHole
- 3D printing: OctoPi (official), MainsailOS
- Networking: piOS network setups, VPN appliances
- Misc: DietPi, Volumio audio, Ubuntu Core
Picking an OS from the list triggers an automatic download from the official mirror before flashing, no browser required. Saves 5 minutes of hunting down the right download page.
Win32 Disk Imager has no such list. You download the .img yourself from wherever (official site, torrent, local mirror), then point Win32DI at it. Slower first-time but gives you total control over which exact build you’re flashing.
Pi Imager also supports custom images via “Use custom” option. You can point it at a local .img or .img.xz file. But once you’re using custom images, you’ve lost Pi Imager’s main advantage over Win32 Disk Imager.
Cross-Platform Reality
If you use Mac or Linux as your primary desktop, Win32 Disk Imager is out, it’s Windows-only. Pi Imager has native macOS and Linux builds maintained by the Pi Foundation with comparable feature parity.
For the Mac/Linux user who wants Win32DI-style Read (backup) functionality, the alternatives are:
- macOS:
dd if=/dev/rdiskN of=pi.img bs=4Mfrom Terminal. Same operation, command-line only. - Linux: Same
ddcommand, or GNOME Disks → ⋮ → Create Disk Image. GUI option. - Cross-platform GUI: balenaEtcher has a “Clone drive” feature since 2024 that does SD → IMG. Alternative.
Long story short: on Windows, for both directions of the Pi workflow, Win32DI + Pi Imager is the combo. On macOS or Linux, Pi Imager + dd does the same work.
Community Sentiment
From reading r/raspberry_pi over the past year, the pattern is clear:
- First-time Pi user: Everyone recommends Pi Imager. The pre-config screen is universally loved.
- Headless Pi deployments: Pi Imager’s WiFi/SSH baking is life-changing. The official docs even recommend it.
- Backup workflows: Win32 Disk Imager comes up every time. Nothing else does Read on Windows.
- Flashing third-party images (DietPi, OctoPi non-official, custom): Win32 Disk Imager is the fallback.
- Power users managing multiple Pis: Usually have both installed, plus
ddon a Linux side.
From the Raspberry Pi forum topic 273112 (2022): “Win32DiskManager is a general tool. Pi Imager is specialized. Use Pi Imager for Pi, Win32DI for backups, and you’ll never hit a wall.” That’s still the correct advice.
Pi Imager’s “Compressed Download” Feature
Worth a specific mention. Pi Imager downloads the OS image in compressed form (.img.xz, usually 1/3 the size of the raw .img) and decompresses-and-writes on the fly, streaming. So a 2.8 GB Pi OS download is actually a 900 MB .xz file, saves bandwidth and time.
Win32 Disk Imager can’t handle .img.xz directly, you’d have to extract it first (7-Zip handles .xz). Slightly more manual work.
Not a huge deal, but if you’re on a slow connection or metered data, Pi Imager’s streaming decompression is nice.
Development Status
Pi Imager is actively developed by the Raspberry Pi Foundation. GitHub repo is raspberrypi/rpi-imager. Regular releases (4-6 per year). Responsive issue tracker. It’s not going anywhere, it’s the foundation’s preferred customer-facing flashing tool.
Win32 Disk Imager has slower release cadence, occasional maintenance updates. Still alive as a project but in steady-state, no major feature work anticipated. The tool is “done” in the sense that it does its job and there’s not much to add.
Both will still be around in 2030. Neither is at risk of being abandoned.
Flashing Multiple Cards for a Pi Cluster
If you’re building a Pi cluster (K3s on four Pi 4s, a Proxmox-on-Pi experiment, a distributed home DNS setup), you’ll be flashing 3-10 SD cards with nearly identical configurations. This is where the tool choice really matters.
Pi Imager’s pre-config screen lets you save settings as a preset. Flash card 1 with hostname “node1”, then open Pi Imager again, change hostname to “node2”, flash, repeat. Each Pi boots already configured with correct WiFi, SSH keys, hostname, and username. This is a 30-minute job for a 4-node cluster instead of a 2-hour job.
Win32 Disk Imager, in contrast, gives you an identical raw image on each card. You’d have to then boot each one, SSH in, run sudo raspi-config (or equivalent), set hostname, reboot, repeat. Adds an extra 5-10 minutes per node.
For cluster deployments, Pi Imager is a clear productivity win. For flashing a dozen cards with truly identical configs (no per-host customization), Win32 Disk Imager’s simplicity can actually be faster, no wizard to click through each time.
When Pi Imager Falls Short
A few scenarios where Pi Imager is genuinely the wrong tool:
- Restoring from a backup IMG. Pi Imager’s Custom option can flash a local .img file, but it warns you about potential issues and won’t let you write a backup that doesn’t match the exact expected signature of an OS image. Win32 Disk Imager doesn’t care what’s in the .img, it writes it.
- Flashing recovery images for other SBCs. Orange Pi, Banana Pi, ODROID, NanoPi, Rock Pi, these are all SBCs with their own .img images. Pi Imager officially only supports Raspberry Pi hardware (though it’ll write images for other SBCs if you force it). Win32 Disk Imager flashes any raw .img.
- Industrial controllers, dashcams, SBCs with proprietary firmware. If the vendor ships an .img file for flashing, Win32 Disk Imager is the tool. Pi Imager’s OS picker lists nothing relevant.
- Air-gapped / offline environments. Pi Imager wants to check for updates and validate image checksums against online sources. Win32 Disk Imager operates entirely offline. Useful for secure environments or factory flashing stations without internet.
- Scripted / unattended flashing. Neither tool has great CLI support, but Win32 Disk Imager’s behavior is more predictable in automated scenarios (it’s simpler). Pi Imager’s wizard dialogs make it harder to script.
The “You Probably Want Both” Conclusion
Here’s my recommendation if you’re building out an imaging setup in 2026:
- Install Raspberry Pi Imager first. Use it for any new Pi setup, headless deployments, or when you want the pre-config settings.
- Install Win32 Disk Imager alongside it. Use it to back up working Pi SD cards to .img files, and for flashing non-Pi OS images (Armbian on other SBCs, OpenWrt on routers, recovery images for industrial controllers).
- Keep 7-Zip too. For extracting .img.xz or .img.gz downloads before feeding them to Win32DI.
These three tools cover every Pi-adjacent flashing workflow and cost nothing. Total disk footprint under 100 MB combined.
FAQ
Does Pi Imager work with non-Pi SD card images?
Yes, via the “Use custom” option. But you lose Pi Imager’s pre-config customization (it only applies to Raspberry Pi OS-based images). For non-Pi images, Win32 Disk Imager is equally effective and slightly more direct.
Can I use Pi Imager to back up a Pi SD card?
No. Pi Imager is write-only. For backups on Windows, use Win32 Disk Imager (Read button). On Mac/Linux, use dd.
Does Pi Imager’s pre-config really configure WiFi without needing a monitor?
Yes, that’s the whole point. The pre-config settings get written to the SD card’s boot partition in a format the Pi reads on first boot. WiFi, SSH, hostname, and user/password are all set up before the OS even fully starts. You can power the Pi up headless, wait 90 seconds, then SSH in from your main PC. No HDMI cable, no keyboard, no mouse.
Which tool is safer?
Both are safe. Pi Imager is officially signed by the Raspberry Pi Foundation, downloads official OS images from verified mirrors, and checksums everything. Win32 Disk Imager is open source, widely trusted, and does simple raw writes. Neither has had a meaningful security incident. Both pass Windows SmartScreen and antivirus scans cleanly (once you whitelist Win32DI for Controlled Folder Access, which we cover in the Error 5 fix guide).
Can Pi Imager flash a larger SD card (64 GB) with an image originally made for a smaller card (32 GB)?
Yes. Both tools do this fine. The image writes to the first 32 GB of the larger card, and the Pi’s filesystem auto-expands on first boot to use the remaining space (if the image is configured for it, which Pi OS is). Works identically in both tools.
Can I go the other way, shrink a 64 GB image to fit a 32 GB card?
Neither tool does this alone. Use PiShrink (a bash script you run on Linux or in WSL) to shrink the image file first, then flash the shrunk image with either Win32DI or Pi Imager. PiShrink is the standard tool for this, very common in the Pi backup workflow.
Which one is better for OctoPrint or Home Assistant?
Pi Imager for the first install (both OS images are in its OS picker, one click to download and flash). Win32 Disk Imager for subsequent backup. That’s the usual pattern: Pi Imager for setup, Win32DI for maintenance.
Does Pi Imager verify after writing?
Yes, automatically. It re-reads the SD card and compares to the source image checksum. Reports “Write Successful” only after verify passes. You don’t have to manually click anything. Win32 Disk Imager has the same functionality via the Verify Only button, but it’s not automatic, you have to opt in.
Can I install Pi Imager on Windows 11 in 2026 without issues?
Yes, it’s well-maintained for Windows 11. Download from raspberrypi.com/software. Standard Windows installer, doesn’t need admin after install (it auto-elevates per session). Works identically on Win 10.
Does Pi Imager fix the Error 5 Access Is Denied problem that Win32 Disk Imager has?
Partially. Pi Imager handles admin privileges more gracefully (it prompts once and stays elevated), and it has smoother interaction with Windows Defender. But it’s not immune, Controlled Folder Access can block Pi Imager too, just less often. If you’re seeing persistent Error 5 with Win32DI, Pi Imager is worth trying as a workaround for Pi images specifically.
Can Pi Imager write to USB drives (not just SD cards)?
Yes. The Storage dropdown shows any removable drive, SD card or USB stick. Useful for setting up a Pi that boots from USB (which Pi 4 and Pi 5 both support). Win32 Disk Imager does the same, any removable drive is a valid target.
How do I edit Pi Imager’s pre-config settings after flashing?
You can’t directly edit them once flashed, Pi Imager applies the settings to the SD card’s boot partition. But you can mount the SD card on any machine and manually edit firstrun.sh in the boot partition if needed. After the Pi has booted once, the firstrun config is consumed and deleted, at that point you’d just SSH in and change settings on the running system.
Can I use Pi Imager to make a bootable USB for Windows or Linux?
Not really. Pi Imager is designed for Pi-flavored images. If you pick “Use custom” and feed it a Windows or Linux ISO, it’ll write the raw ISO bytes to the USB, but the result may or may not boot depending on the ISO type (most modern Linux isohybrid ISOs work, Windows ISOs don’t). For Windows/Linux bootable USBs, use Rufus instead (see our Win32 Disk Imager vs Rufus article).
Is there any reason to prefer Win32 Disk Imager over Pi Imager for brand-new Pi setups?
A few niche ones: if you want to flash an older/legacy Pi OS build not in Pi Imager’s list, if you need to write a custom-built Pi OS image you compiled yourself, or if you prefer minimal tools over wizards. For 95% of users doing standard Pi setups, Pi Imager is the better choice.
Wrapping Up
Raspberry Pi Imager replaced Win32 Disk Imager as the default Pi setup tool for 95% of use cases, but it didn’t replace it entirely. The Read to IMG function Win32 Disk Imager has, the one that lets you back up a working Pi before you break it, remains its reason to exist for Pi users. Install both, use Pi Imager for new setups, use Win32 Disk Imager for backups and restores. Total effort to set up the combo: about 4 minutes. Time saved across all your future Pi work: hours. The full Win32 Disk Imager guide covers the Read/Write/Verify flow in detail for when you’re ready to start backing up your SD cards.
Related Guides
Pair this guide with the rest of the Win32 Disk Imager knowledge base. These cover the adjacent workflows you’ll hit when working with disk images, bootable USBs, and Windows partition management.
- How to Use Win32 Disk Imager — Complete Beginner Guide — The full reference for the Win32 Disk Imager tool itself — install, UI walkthrough, and common workflows.
- Win32 Disk Imager vs Rufus — Which Is Better in 2026? — Hands-on benchmarks and feature comparison — when to pick Win32 Disk Imager, when Rufus wins, and why you probably want both installed.
- Win32 Disk Imager Error 5: Access Is Denied — 9 Working Fixes — The full troubleshooting tree for Error 5 on Win 10/11 — Controlled Folder Access, antivirus conflicts, SD lock switches, Safe Mode, and Group Policy.
- Write an IMG File to USB with Win32 Disk Imager — Step-by-step for writing a .img or .iso to USB on Windows 10/11 with real benchmarks and error fixes.