Free up space on your Windows PC. See what's eating your drive, get a ranked list of fixes, and clear room. Nothing leaves your computer.
Top-level folders on every fixed drive, biggest first. Now you can see what's filling a second drive (D:, E:…), not just C:.
The largest single files in your profile (≥100 MB, skips app data). These are your files, so look before you delete. Open the folder, confirm it's junk, then remove it.
| File | Size | Location |
|---|
| Location | Size | Risk | Clear it |
|---|
Each command is copy-and-run in PowerShell. Safe = junk you won't miss. Review = check before running. Advanced = needs Admin or changes system behavior.
Sizes are Windows' own estimates and can be rough. Uninstall only things you recognize and don't need. Keep anything that keeps your computer running (drivers, runtimes, Windows components).
| Program | Size (MB) |
|---|
| Item | Starts from | Using now | Note |
|---|
Turning a startup item off is reversible: it stops the app launching at boot, it doesn't uninstall anything. The safest place to toggle these is the Startup settings button above.
These match names that are commonly trialware or manufacturer extras a lot of people remove. It's a heads-up, not a verdict: keep anything you actually use. Your call.
The programs using the most memory at the moment your scan ran. Closing one frees its memory until you open it again. Core Windows processes are left out, since those keep your PC running.
| Program | Memory | Note |
|---|
Each one is copy-and-run in PowerShell or a one-click Windows screen. Safe = a reversible toggle. Review = check before you run it. Advanced = needs Admin.
Items Defender has logged on this PC. It usually quarantines these automatically, so this is a record, not a live threat list.
| Item | Severity | Status |
|---|
Startup items that are unsigned or run from an unusual place (Temp, Downloads, AppData). This does not mean they're bad: plenty of legitimate apps look like this. It means they're worth recognizing. If you don't know what one is, copy its fingerprint and paste it into the search box at virustotal.com for a free reputation check.
These use the scanners built into Windows. Safe = read-only check. Review = takes a while or needs a download. Advanced = needs Admin.
Never opened PowerShell? No problem. It's a built-in Windows app, and this scan only reads: it changes nothing, deletes nothing, and sends nothing anywhere. Here's every step.
Just below, click Copy to copy the command, or Download as .ps1 file to save it. Both are the exact same read-only script.
Press the Windows key, type PowerShell, and click the app in the results. (No need to "Run as administrator" for the scan.)
Right-click inside the blue window to paste (or press Ctrl+V), then press Enter. It runs right there — no install, no setup. (Downloaded the file instead? See step 4.)
Don't double-click it — Windows opens a .ps1 in Notepad, and blocks "Run with PowerShell" on downloaded scripts (a safety default, not a bug). Instead, open PowerShell and run it directly, which sidesteps the block:
powershell -ExecutionPolicy Bypass -File "$HOME\Downloads\diskdetox-scan.ps1"
When it finishes, it saves disk-health.json to your Desktop and copies it to your clipboard. Scroll down to 2 · Load your results and click Paste data (or Load file… and pick it from your Desktop).
New to this? The step-by-step walkthrough above shows every step with pictures. The scan is read-only: it deletes nothing and reads only folder and program names and sizes, never file contents, and nothing leaves your PC.
Running the file: Windows opens a downloaded .ps1 in Notepad when you double-click it, and blocks "Run with PowerShell" on downloaded scripts. That's a Windows safety default, not a bug. To run it, open PowerShell and paste this one line:
powershell -ExecutionPolicy Bypass -File "$HOME\Downloads\diskdetox-scan.ps1"
Simpler: use Copy above and paste the script straight into PowerShell instead.
The scan sizes folders across all your drives and finds your largest files, so on a full or large drive it can take a few minutes. That's normal. Cloud-only OneDrive files are skipped automatically, so they don't slow it down or get counted.