vSize
Where the disk space has gone, and what is wasting it.
The problem
The drive says it is full and Windows will not tell you why. Explorer works out one folder at a time, slowly, and stops as soon as you click somewhere else — so finding the twelve gigabytes that appeared last month means opening folders for half an hour and guessing.
And the tools that do answer it often answer it wrongly. Windows is full of junctions and hard-linked files; a scanner that walks through the first and adds up the second reports space that does not exist, which is worse than no answer at all.
What it does
1A map you can read at a glance
A folder taking 40% of the drive gets 40% of the picture. Click into it, and the trail at the top takes you back out. The rectangles are kept as close to square as the numbers allow, so the small ones are still big enough to see and to click.
2It does not count anything twice
A junction is not walked through — it is a second route to bytes that live elsewhere. A file with two names is counted once, and the other name is listed greyed rather than vanishing. Windows uses both heavily, and adding them up naively invents gigabytes.
3Size on disk, for real
Not an estimate from the cluster size — what is actually allocated. A three-byte file does not take three bytes; it takes a cluster, or on NTFS sometimes none at all. vSize shows both numbers and the gap between them.
4The wasted space, named
That gap is where a folder of ten thousand tiny files turns out to be taking four hundred megabytes. No file manager shows it, and it is often the answer.
5The plain answers as well as the picture
The biggest folders, the biggest single files, which kinds of file add up to the most, and how much has not been touched in a year — which is where a clear-out actually starts.
6What changed since last time
vSize keeps the totals of each measurement, so it can say which folders have grown since Tuesday. It keeps the totals, not the tree — a summary, not a copy of your drive.
7It stops when you tell it to
A whole drive takes minutes. The count climbs as it goes and the Stop button works immediately; what has been measured so far is still shown.
8A report for whoever asked
The biggest folders, the biggest files or the totals by kind, saved as a CSV that opens in any spreadsheet.
Why it is worth it
vSize does not delete, move or change anything, and there is nothing in it that can. Hand it to anybody. The deciding is theirs; vOrg files things away when they have decided.
Every rectangle’s area is its share to four decimal places, and that is tested rather than assumed. A treemap that is slightly out is a lie people believe, because the eye reads area without being asked to.
Binary units, the same as Windows. A tool that disagrees by 7% about the same folder is a tool people stop believing.
Some system folders need administrator rights. vSize reports how many it skipped rather than quietly leaving them out of the total and looking confident.
How you use it
"Measure this folder" from Explorer, or choose a drive from the list vSize opens with.
The big rectangles are where the space went. Click one to go inside it.
Biggest folders, biggest files, by kind, by age — whichever question you actually have.
And vSize will tell you what grew.
What it needs
| Windows | 10 or 11, 64-bit |
|---|---|
| Installs to | Your user profile — no administrator prompt |
| Reads | Any drive or folder Windows lets it open |
| Network | None — vSize never connects to anything |
| Goes with | vOrg, for filing away what you find |
What it will not do, said plainly
vSize changes nothing. It will not delete a file, empty a recycle bin, or offer to "clean" anything — it measures, and the deciding is yours. That is a deliberate line: a tool that both finds big files and deletes them is a tool that will one day delete the wrong one.
Some folders need administrator rights to look inside. vSize is not run as administrator by default, so those are skipped — and it says how many, rather than quietly leaving them out of the total.
A file with two names shares its bytes between both places, so there is no right answer to which folder they belong to. vSize counts them at the first name it comes across and marks the other; the total is right either way, but the two folders cannot both be credited without inventing space.
See vSize on your own machine
A short screen-share is usually enough — we open it on your PC, with your files.
Or write to info@issmart.in.
vTouch
vPress
vPDF
vScreen
vBack
vNote
vFTP
vName
vLog
vLogServer
vSys
vCom
vShot
vCmd
vTag
vAudio
vBooks
vOrg
vPort
vScan
vCon
vCopy
vAuto
vClean
vShow