How do I clean temporary files online for free?

Upload the folder you want to clean, run a scan, review the flagged junk (temp, cache, logs, duplicates, empties), then download a cleanup script to run locally or a clean-copy ZIP without the junk. It’s free, with no sign-up, and your files never leave your browser.

Is this temporary file cleaner free?

Yes. Scanning, analysis, reports, the cleanup script and the clean-copy ZIP are all free, with no watermark and no daily limit. A developer API is available for automated, high-volume storage cleanup.

Does this delete files from my computer automatically?

No — and by design it cannot. A web page is sandboxed and cannot read or delete files on your disk. It analyses an uploaded folder and gives you a reviewable cleanup script (or a clean-copy ZIP) so YOU stay in control of every deletion.

Why can’t a website delete my temp files directly like CCleaner?

Browsers run web pages in a strict sandbox: a page can only see files you explicitly upload and can never write to or delete from your filesystem. Desktop apps like CCleaner have OS-level access; a website does not. That’s why this tool produces a cleanup script you run locally instead.

How does the temporary file cleaner work?

You upload a folder (via the directory picker, drag-and-drop, or a ZIP). The tool reads file names, paths, sizes and dates, classifies each file as junk or a keeper, hashes candidates to find duplicates, scores your storage, and then exports a cleanup script, a clean ZIP and reports — all in your browser.

Is it safe to use an online junk file cleaner?

With this tool, yes: nothing is uploaded to a server, so there is no privacy risk from transferring files. It also never deletes anything on its own — you review the flagged files and run the cleanup yourself.

Do I need to install anything?

No. Unlike CCleaner, BleachBit or CleanMyMac, there is nothing to install. It works in any modern browser on Windows, macOS, Linux, Chromebook, Android and iOS.

What’s the difference between this and a disk cleanup tool?

Desktop disk-cleanup tools have direct OS access and can delete system temp files automatically. This is a browser tool: it analyses folders you upload and clears this site’s own browser storage, then hands you a script to perform disk deletions safely and transparently.

Can I clean my whole C: drive or Mac with this?

A browser can’t scan an entire drive on its own. You can upload large folders (Downloads, project folders, user directories) to analyse them, and the generated cleanup script can target whatever paths you point it at locally.

What are temporary files?

Temporary files (.tmp, .temp, ~$ lock files, .swp) are created by apps for short-term work — autosaves, in-progress edits, intermediate data — and are meant to be deleted automatically, but often aren’t. They accumulate and waste space.

What are cache files?

Cache files store data an app expects to reuse (downloaded assets, thumbnails, compiled output) to make things faster. They’re safe to delete — the app simply regenerates them — but they can grow very large (browser caches, build caches, package-manager caches).

Log files (.log) record what an application did — events, warnings, errors. They’re useful for debugging but pile up over time, especially rotated logs (app.log.1, app.log.2). Old logs are usually safe to remove.

What are crash dumps?

Crash dumps (.dmp, .mdmp, .stackdump, .crash) capture a program’s memory state when it crashed, for diagnostics. Unless you’re actively debugging a crash, they’re safe to delete and can be large.

What are build files and why are they junk?

Build artifacts — node_modules, dist, build, .next, target, __pycache__, .gradle, coverage — are generated from your source code and can be recreated at any time by rebuilding. They’re often the single biggest space waster on a developer machine.

What are backup files?

Backup copies (.bak, .old, .orig, trailing ~) are created by editors and tools before changing a file. Once you’re happy with the current version, old backups are usually safe to clear — review them first.

What are partial downloads?

Partial/incomplete downloads (.part, .crdownload, .partial, .aria2) are leftovers from interrupted downloads. They’re unusable and safe to delete.

What is residual app data?

When you uninstall or update software, it often leaves behind configuration, cache and update files. In an uploaded folder these show up as orphaned caches, installer leftovers and stale config — the tool flags the obvious ones.

What are orphaned files?

Orphaned files are leftovers no longer referenced by any app — caches from removed programs, temp files from finished tasks, empty folders after a cleanup. The scanner surfaces empties and folders that become empty after cleaning.

What counts as junk in this tool?

Files matched as temporary, cache, log, build artifact, backup, partial download, thumbnail/system cache, installer leftover, crash dump, empty (0-byte) or duplicate. Old and large files are also tagged so you can review them.

Why should I clean temporary files?

To free storage space, reduce clutter, speed up backups and file search, and keep folders organised. On developer machines, clearing build caches alone can reclaim many gigabytes.

Will cleaning temp files make my computer faster?

It can help indirectly: freeing space avoids low-disk slowdowns, smaller folders back up and sync faster, and fewer files speed up indexing and search. It won’t speed up your CPU, but a less-cluttered disk runs more smoothly.

How much space can I recover?

It depends on the folder. Developer projects often have hundreds of MB to many GB in node_modules, build and cache folders; Downloads folders accumulate installers and duplicates. The dashboard shows exactly how much is recoverable before you act.

Is it safe to delete temporary files?

Generally yes — true temp, cache, build and log files regenerate or are no longer needed. This tool marks each file Safe / Review / Important / Protected so you never delete something important by accident.

How often should I clean temp files?

For most people, monthly is plenty. Developers may clean build/cache folders more often (or after finishing a project). Downloads folders benefit from a periodic duplicate-and-old sweep.

How do I scan a folder for junk files?

Click "Choose folder" (or drag a folder in), pick a scan mode, and the tool reads every file, classifies it and shows a dashboard with recoverable space, a waste breakdown and a file table.

Quick Scan classifies files by name, extension and path only (no content hashing), so it’s instant. It finds obvious junk — temp, cache, logs, build folders — but skips duplicate detection.

What is Standard Scan?

Standard adds size and age analysis and detects duplicates by hashing same-size candidates (capped for speed). It’s the recommended default.

Deep Scan hashes more content to find duplicates and verify empty/zero-byte files across larger folders. It’s slower but more thorough.

What is Smart (AI) Scan?

Smart Scan runs a deep scan and adds priority scoring and recommendations, surfacing the highest-value cleanup opportunities first. It’s heuristic and content-aware within your uploaded files — no data is sent anywhere.

What is Enterprise scan mode?

Enterprise mode raises the hashing caps for very large trees and uses a virtualized table so the interface stays smooth with huge file counts.

Can I scan a ZIP archive?

Yes. Upload a .zip and the tool reads its contents and classifies the files inside exactly like a folder — useful for auditing an archived project or backup.

Can it handle very large folders?

Yes, within your device’s memory. Hashing is capped per file and overall to stay responsive (shown as a "partial" scan when reached), and the file table is virtualized so even hundreds of thousands of files remain browsable.

Does scanning upload my files anywhere?

No. The directory picker and drag-and-drop give the page read access in memory only. All scanning, hashing and classification happen on your device; nothing is transmitted.

How long does a scan take?

Quick scans are near-instant. Standard/Deep depend on how many same-size files must be hashed and total size — typically seconds to a minute for normal folders. A live dashboard shows the stage and progress.

How does it find temporary files?

It matches well-known patterns — .tmp, .temp, ~$ Office locks, .swp/.swo vim swaps, .rej/.orig — plus files inside tmp/ and temp/ folders.

How does it detect cache files?

By path (.cache, .turbo, .vite, .parcel-cache, .sass-cache, .mypy_cache, .pytest_cache, cache/) and by .cache extensions, so framework and tool caches are surfaced.

How does it find build artifacts?

By folder name — node_modules, dist, build, out, target, .next, .nuxt, .svelte-kit, .angular, coverage, __pycache__, .gradle — and by compiled extensions like .pyc, .class, .o, .obj.

Does it detect npm, yarn and pnpm caches?

Within an uploaded folder it flags package-manager and build caches (.cache, node_modules, etc.). It cannot reach your global npm/yarn/pnpm cache on disk — that’s outside the browser sandbox — but the generated script can target those paths locally.

Does it find empty files?

Yes. Zero-byte files are flagged as empty (safe to remove), and the tool also reports folders that would become empty once the selected junk is removed.

Does it find empty folders?

The directory picker doesn’t expose truly-empty folders, but the tool computes which folders become empty after cleaning the flagged junk — which is the more useful signal — and lists them.

Can it find old files?

Yes. Choose a threshold (30 days, 90 days, 6 months, 1 year, 2 years) and files older than that are tagged "old" for review. Old files are flagged, not auto-deleted, since they may still matter.

Can it find large files?

Yes. Large files are tagged and the dashboard lists the largest files and folders so you can target the biggest space wins first.

How does it detect installer leftovers?

It flags installer/setup binaries (.exe, .msi, .dmg, .pkg, .deb, .rpm, .appimage and names containing setup/installer) commonly left in Downloads after installing software.

Does it detect thumbnail and system caches?

Yes — Thumbs.db, ehthumbs.db, .DS_Store, desktop.ini and similar OS-generated files are flagged as thumbnail/system caches.

Can it find duplicate files?

Yes. It groups files of identical size, hashes them with SHA-256, and reports exact duplicates with the wasted space, keeping the first copy and flagging the rest for review.

How accurate is duplicate detection?

It’s exact: only files with identical content (matching size and SHA-256 hash) are grouped, so there are no false positives. Very large folders are sampled up to a byte cap, shown as a partial scan.

Does it find duplicate temp and cache files?

Yes — duplicate detection runs across all files, so repeated temp files, cached copies, logs, backups and exports are grouped together with their reclaimable space.

Will it delete the original when removing duplicates?

No. In each duplicate group the first copy (alphabetical by path) is kept and only the extra copies are flagged. You review and choose before anything is cleaned.

Can it detect similar (not identical) images?

Exact-duplicate detection is content-hash based. For perceptual/near-duplicate image matching, use the dedicated Duplicate File Finder tool, which adds perceptual hashing.

Can this clean my browser cache?

It can clear THIS website’s browser storage — its localStorage, sessionStorage, IndexedDB, Cache Storage, cookies and service workers — instantly, from the "Clean this browser" tab. Browsers isolate each site, so a web page cannot clear other sites’ caches or your whole-browser cache; for that use your browser’s Ctrl+Shift+Delete.

Temporary File Cleaner Online Free – Remove Junk & Recover Storage Space

Smart junk detection

Classifies temp, cache, log, build, backup, partial, duplicate, empty & old files by name, path, size and age — across an uploaded folder or ZIP.

100% private

Everything runs in your browser. Your files are never uploaded, logged or stored — ideal for confidential and work folders.

Duplicate detection

SHA-256 content hashing groups byte-identical files and shows exactly how much space the extra copies waste.

Honest cleanup

A browser can’t delete from disk, so you get a reviewable PowerShell/bash script (dry-run by default) or a clean-copy ZIP.

Browser-storage cleaner

Really clears THIS site’s localStorage, sessionStorage, IndexedDB, Cache Storage, cookies and service workers, with usage stats.

Storage intelligence

Dashboard with recoverable space, waste breakdown, largest folders, four storage scores and PDF/CSV/JSON/XML reports.

What is a temporary file cleaner?

A temporary file cleaner identifies files your system no longer needs — temporary files, caches, logs, crash dumps, build artifacts, duplicates and old leftovers — and helps you remove them to recover storage and reduce clutter. Over time these files accumulate silently and can consume gigabytes, especially on developer machines and busy Downloads folders.

This cleaner is different from desktop apps like CCleaner or BleachBit: it runs entirely in your browser. You upload a folder (or a ZIP), it classifies every file, finds duplicates and empties, scores your storage, and then gives you a safe, transparent way to clean — a reviewable cleanup script or a clean-copy ZIP — because a web page is sandboxed and cannot delete files from your disk on its own.

Analyse an uploaded folder or ZIP for junk — 100% in your browser
Detect temp, cache, log, build, backup, duplicate, empty & old files
Score storage efficiency, cleanup opportunity and organisation
Clear THIS site’s browser storage (localStorage, IndexedDB, caches, cookies)
Export a cleanup script (PowerShell/bash) or a clean-copy ZIP
Generate PDF/CSV/JSON/XML reports — nothing is uploaded

Why clean temporary files?

Temporary and cache files exist to make software faster, but they are meant to be disposable. When they aren’t cleaned up they waste storage, slow down backups and file search, and clutter your folders. Reclaiming that space keeps your device healthy and your projects tidy.

Cleaning also reveals structural waste: duplicate exports, abandoned build folders, stale logs and old downloads. The dashboard quantifies exactly how much you can recover before you remove anything.

Free up storage space and avoid low-disk slowdowns
Faster backups, sync and file search with fewer files
Better organisation — remove duplicates and empty folders
Reclaim gigabytes from build and cache folders on dev machines
Improved performance and a tidier, more reliable workspace

Types of junk files

Temporary files

.tmp, .temp, ~$ locks, vim swaps — short-lived files that were never cleaned up.

Cache files

Framework, tool & app caches (.cache, .turbo, .vite) — regenerated automatically.

Log files

.log and rotated logs — useful for debugging, safe to clear once old.

Build artifacts

node_modules, dist, build, target, __pycache__ — recreated by rebuilding.

Backup copies

.bak, .old, .orig, trailing ~ — editor/tool backups you may no longer need.

Partial downloads

.part, .crdownload, .partial — unusable leftovers from interrupted downloads.

Crash dumps

.dmp, .stackdump, .crash — memory snapshots from program crashes.

Duplicate files

Byte-identical copies found by SHA-256 — keep one, remove the rest.

Empty files

Zero-byte files and folders that become empty after cleaning.

Installer leftovers

.exe, .msi, .dmg, .pkg setups left in Downloads after installing.

How to clean temporary files

Upload a folder

Drag in a folder (or a ZIP, or pick "Choose folder"). Everything is read in your browser — files never leave your device. You can also clean this site’s browser storage from the second tab.

Run a scan

Pick Quick, Standard, Deep, Smart or Enterprise. The tool classifies every file as temp, cache, log, build artifact, backup, duplicate, empty or old, and scores your storage.

Review recommendations

See a storage dashboard, waste breakdown and a file table. Each item is tagged Safe / Review / Important / Protected. Filter, search, preview and select what to remove.

Clean the files

Because a browser can’t delete from your disk, download a reviewable cleanup script (PowerShell or bash) to run locally, or a clean-copy ZIP without the junk.

Recover space

Run the script (or keep the clean ZIP), export a PDF/CSV/JSON report, and watch your recoverable space turn into free space.

What a browser can — and cannot — clean

Honesty matters here. A website runs in a sandbox: it can only read files you explicitly upload, and it can never write to or delete files on your disk, read other websites’ data, or touch your operating system. So this tool cannot silently scan your C: drive or auto-delete system temp files the way an installed app can.

What it can do is real and useful: deeply analyse the folders you give it, clear this website’s own browser storage, and hand you a precise, reviewable cleanup script (or a clean-copy ZIP) so the actual disk deletion happens locally, with your full consent and control.

Use cases

Windows cleanup

Upload your Downloads or a project folder to find installers, .tmp files, Thumbs.db, duplicates and old files, then run the generated PowerShell script to reclaim space — a focused complement to Disk Cleanup and Storage Sense.

Mac cleanup

Scan a folder for .DS_Store clutter, caches, duplicates and old downloads, and get a bash cleanup script for macOS — free and private, with no CleanMyMac install.

Linux cleanup

Audit home or project directories for caches, logs, build output and duplicates, and export a bash script to clear them. Ideal for tidying servers and workstations.

Browser cleanup

Use the "Clean this browser" tab to clear this site’s localStorage, sessionStorage, IndexedDB, Cache Storage, cookies and service workers, and see your origin storage usage — plus guidance to clear your whole-browser cache.

Developer workstations

node_modules, dist, .next, target, coverage and package caches are the biggest space wasters. Scan a projects folder to see exactly how much each reclaims, then script the cleanup.

Download folder cleanup

Find duplicate downloads, old files, partial downloads and installer leftovers in your Downloads folder, and clean them safely with a reviewable script.

Cloud storage cleanup

Download a synced folder, scan it for duplicates and stale junk, and re-upload the clean copy — a practical way to trim cloud storage costs.

Enterprise storage audits

Classify large storage trees, quantify recoverable space and duplicates, and export reports for storage governance and data-lifecycle decisions — with the API for automation at scale.

Privacy, security & data handling

Everything happens on your device. Your uploaded folder is read into memory, analysed, hashed and packaged in the browser, and nothing is transmitted, logged or retained. Close the tab and it’s gone.

The tool never deletes anything by itself: disk cleanup is done by a script you review and run, and browser-storage clearing affects only this site and always requires a click. A heuristic risk check flags executables and scripts, but it is not antivirus — it’s an advisory signal.

Related tools

Duplicate File Finder

Find & remove duplicate files

Compare Folders

Diff & sync two folders

Bulk File Rename

Rename & organise in bulk

File Merger

Merge files together

Archive Extractor

Extract ZIP/RAR/7Z & more

File Size Reducer

Shrink files & images

File Splitter

Split large files into parts

File Metadata Viewer

Inspect file metadata

Storage cleanup API

Automate storage audits at scale — junk detection, cache & storage analysis, duplicate cleanup and batch processing, with async jobs, webhooks, API keys, team accounts and usage analytics.

Free

$0/mo

100 scans / mo
Junk & duplicate detection
Cleanup script & reports
Community support

Start free

Pro

$19/mo

10,000 scans / mo
Cache & storage analysis API
Async jobs & webhooks
Batch processing

Go Pro

Business

$69/mo

100,000 scans / mo
Storage audit API
Team accounts & API keys
Usage analytics

Choose Business

Enterprise

Custom

Unlimited volume & SLA
Storage governance
Retention & DLP policies
Dedicated support

Contact sales

Frequently asked questions

94+ answers about cleaning temp files, cache, logs, duplicates & browser storage.

A temporary file cleaner finds and helps you remove files your computer no longer needs — temporary files, caches, logs, crash dumps, build artifacts, duplicates and old leftovers — so you recover storage space and reduce clutter. This one runs entirely in your browser: you upload a folder, it analyses and classifies the junk, and gives you a safe way to clean it.

Troubleshooting

Why can’t I select a folder on my phone?

Some mobile browsers don’t support the directory picker. Upload a ZIP of the folder instead, or use a desktop browser for full folder scanning.

The scan says "partial" — what does that mean?

To stay responsive, duplicate hashing is capped by total bytes on very large folders. Duplicates found are still exact; some files beyond the cap simply weren’t hashed. Use Deep/Enterprise mode to raise the cap.

It flagged a file I want to keep.

Select it and click "Whitelist selected", or just don’t include it in your selection. Whitelisted files are excluded from the junk list and the cleanup script.

The cleanup script didn’t delete anything.

It runs in dry-run mode by default (it only prints what it would delete). Open it, set the correct base folder, then change the dry-run flag to enable real deletion.

My browser-storage numbers look small.

navigator.storage.estimate() reports your origin’s usage, which for a fresh visit is tiny. Cache Storage and IndexedDB sizes aren’t always itemised by the browser, so counts may show without exact bytes.

The clean-copy ZIP is missing some files.

Very large packaging is capped to stay within memory; skipped files are reported. Reduce the selection or use the cleanup script for large folders instead.

Preview shows nothing for a file.

Binary files can’t be shown as text; images preview directly, and other types show their metadata. Download the file to open it in a dedicated app.

Will running the script harm my system?

It only deletes the paths you selected under the base folder you set, and it’s dry-run by default. Review it first; never run a deletion script you haven’t read.

Smart junk detection

Classifies temp, cache, log, build, backup, partial, duplicate, empty & old files by name, path, size and age — across an uploaded folder or ZIP.

100% private

Everything runs in your browser. Your files are never uploaded, logged or stored — ideal for confidential and work folders.

Duplicate detection

SHA-256 content hashing groups byte-identical files and shows exactly how much space the extra copies waste.

Honest cleanup

A browser can’t delete from disk, so you get a reviewable PowerShell/bash script (dry-run by default) or a clean-copy ZIP.

Browser-storage cleaner

Really clears THIS site’s localStorage, sessionStorage, IndexedDB, Cache Storage, cookies and service workers, with usage stats.

Storage intelligence

Dashboard with recoverable space, waste breakdown, largest folders, four storage scores and PDF/CSV/JSON/XML reports.

What is a temporary file cleaner?

Analyse an uploaded folder or ZIP for junk — 100% in your browser
Detect temp, cache, log, build, backup, duplicate, empty & old files
Score storage efficiency, cleanup opportunity and organisation
Clear THIS site’s browser storage (localStorage, IndexedDB, caches, cookies)
Export a cleanup script (PowerShell/bash) or a clean-copy ZIP
Generate PDF/CSV/JSON/XML reports — nothing is uploaded

Why clean temporary files?

Cleaning also reveals structural waste: duplicate exports, abandoned build folders, stale logs and old downloads. The dashboard quantifies exactly how much you can recover before you remove anything.

Free up storage space and avoid low-disk slowdowns
Faster backups, sync and file search with fewer files
Better organisation — remove duplicates and empty folders
Reclaim gigabytes from build and cache folders on dev machines
Improved performance and a tidier, more reliable workspace

Types of junk files

Temporary files

.tmp, .temp, ~$ locks, vim swaps — short-lived files that were never cleaned up.

Cache files

Framework, tool & app caches (.cache, .turbo, .vite) — regenerated automatically.

Log files

.log and rotated logs — useful for debugging, safe to clear once old.

Build artifacts

node_modules, dist, build, target, __pycache__ — recreated by rebuilding.

Backup copies

.bak, .old, .orig, trailing ~ — editor/tool backups you may no longer need.

Partial downloads

.part, .crdownload, .partial — unusable leftovers from interrupted downloads.

Crash dumps

.dmp, .stackdump, .crash — memory snapshots from program crashes.

Duplicate files

Byte-identical copies found by SHA-256 — keep one, remove the rest.

Empty files

Zero-byte files and folders that become empty after cleaning.

Installer leftovers

.exe, .msi, .dmg, .pkg setups left in Downloads after installing.

How to clean temporary files

Upload a folder

Drag in a folder (or a ZIP, or pick "Choose folder"). Everything is read in your browser — files never leave your device. You can also clean this site’s browser storage from the second tab.

Run a scan

Pick Quick, Standard, Deep, Smart or Enterprise. The tool classifies every file as temp, cache, log, build artifact, backup, duplicate, empty or old, and scores your storage.

Review recommendations

See a storage dashboard, waste breakdown and a file table. Each item is tagged Safe / Review / Important / Protected. Filter, search, preview and select what to remove.

Clean the files

Because a browser can’t delete from your disk, download a reviewable cleanup script (PowerShell or bash) to run locally, or a clean-copy ZIP without the junk.

Recover space

Run the script (or keep the clean ZIP), export a PDF/CSV/JSON report, and watch your recoverable space turn into free space.

What a browser can — and cannot — clean

Use cases

Windows cleanup

Mac cleanup

Scan a folder for .DS_Store clutter, caches, duplicates and old downloads, and get a bash cleanup script for macOS — free and private, with no CleanMyMac install.

Linux cleanup

Audit home or project directories for caches, logs, build output and duplicates, and export a bash script to clear them. Ideal for tidying servers and workstations.

Browser cleanup

Developer workstations

node_modules, dist, .next, target, coverage and package caches are the biggest space wasters. Scan a projects folder to see exactly how much each reclaims, then script the cleanup.

Download folder cleanup

Find duplicate downloads, old files, partial downloads and installer leftovers in your Downloads folder, and clean them safely with a reviewable script.

Cloud storage cleanup

Download a synced folder, scan it for duplicates and stale junk, and re-upload the clean copy — a practical way to trim cloud storage costs.

Enterprise storage audits

Classify large storage trees, quantify recoverable space and duplicates, and export reports for storage governance and data-lifecycle decisions — with the API for automation at scale.

Privacy, security & data handling

Related tools

Duplicate File Finder

Find & remove duplicate files

Compare Folders

Diff & sync two folders

Bulk File Rename

Rename & organise in bulk

File Merger

Merge files together

Archive Extractor

Extract ZIP/RAR/7Z & more

File Size Reducer

Shrink files & images

File Splitter

Split large files into parts

File Metadata Viewer

Inspect file metadata

Storage cleanup API

Automate storage audits at scale — junk detection, cache & storage analysis, duplicate cleanup and batch processing, with async jobs, webhooks, API keys, team accounts and usage analytics.

Free

$0/mo

100 scans / mo
Junk & duplicate detection
Cleanup script & reports
Community support

Start free

Pro

$19/mo

10,000 scans / mo
Cache & storage analysis API
Async jobs & webhooks
Batch processing

Go Pro

Business

$69/mo

100,000 scans / mo
Storage audit API
Team accounts & API keys
Usage analytics

Choose Business

Enterprise

Custom

Unlimited volume & SLA
Storage governance
Retention & DLP policies
Dedicated support

Contact sales

Frequently asked questions

94+ answers about cleaning temp files, cache, logs, duplicates & browser storage.

Troubleshooting

Why can’t I select a folder on my phone?

Some mobile browsers don’t support the directory picker. Upload a ZIP of the folder instead, or use a desktop browser for full folder scanning.

The scan says "partial" — what does that mean?

It flagged a file I want to keep.

Select it and click "Whitelist selected", or just don’t include it in your selection. Whitelisted files are excluded from the junk list and the cleanup script.

The cleanup script didn’t delete anything.

It runs in dry-run mode by default (it only prints what it would delete). Open it, set the correct base folder, then change the dry-run flag to enable real deletion.

My browser-storage numbers look small.

The clean-copy ZIP is missing some files.

Very large packaging is capped to stay within memory; skipped files are reported. Reduce the selection or use the cleanup script for large folders instead.

Preview shows nothing for a file.

Binary files can’t be shown as text; images preview directly, and other types show their metadata. Download the file to open it in a dedicated app.

Will running the script harm my system?

It only deletes the paths you selected under the base folder you set, and it’s dry-run by default. Review it first; never run a deletion script you haven’t read.