Der er mange måder at gendanne slettede filer fra harddiske. De slettede filer går ikke nødvendigvis tabt for altid, og med de relevante programmer kan du gendanne dem. Men hvad nu hvis du ikke ønsker det? Måske har du nogle filer, som du vil slette for altid. Måske indeholder de følsomme oplysninger, som du ikke ønsker at blive gendannet. For at gøre det skal du sørge for, at filerne ikke bare slettes, men også overskrives på en sådan måde, at de ikke kan gendannes. I denne artikel analyserer vi de bedste gratis værktøjer til sikker sletning af filer på Windows -computere:

Hvordan vi testede de permanente viskelædere

Før vi testede hver filmakulator, oprettede vi en tom mappe på vores testcomputer. Derefter placerede vi mange forskellige filer inde i den. I alt indeholdt mappen 2,66 GB data i 123 filer med forskellige filformater: bmp, cur, docx, jpg, mkv, mp3, pdf, png, txt og xlsx .

Dernæst brugte vi hver filmakuleringsapp fra vores roundup til at tørre alt inde i denne mappe. For hvert af makuleringsprogrammerne brugte vi den mest komplekse slettemetode, den tilbød. Vi bemærkede også, hvor mange slettealgoritmer hver app tilbyder, og hvor let den er at bruge. Så, da alle vores testfiler var slettet og sikkert overskrevet, kørte vi Recuva for at kontrollere, om nogen af ​​de slettede filer stadig kunne gendannes.

Vi gentog alle disse trin for hver filmakuleringsapp, som vi testede. Vi valgte de apps, du ser nedenfor, fordi de er gratis og også populære. Vi ønskede ikke at inkludere kommerciel software, da ikke mange hjemmebrugere er villige til at bruge penge på sådanne programmer.

1. Viskelæder

Eraser er en lille app, der sikkert kan slette filer, mapper, ubrugt diskplads eller endda hele drev. For at bruge Eraser skal du downloade og installere det. Når du er færdig, tilføjer den automatisk sikker sletning til Windows højreklik-menuen.

Ud over de kontekstuelle menuindstillinger giver Erasers^(Eraser) interface dig også mulighed for at oprette planlagte sletteopgaver. Denne funktion er praktisk, hvis du arbejder med data, som du ønsker at blive slettet regelmæssigt.

Mens den understøtter 13 forskellige slettemetoder, er den, den bruger som standard, Gutmann- standarden. Denne metode overskriver de slettede filer 35 gange, hvilket betyder, at processen kan tage et stykke tid, afhængigt af antallet af filer, du sletter.

Nu var det tid til at tjekke, hvor godt Eraser klarede sig. Så vi kørte Recuva på den udslettede mappe. Resultatet var, at ingen af ​​de slettede filer kunne gendannes.

Download: Viskelæder^(Eraser)

2. Alternativ filmakulator

Alternativ File Shredder^{(Alternate File Shredder)} er en lille app, der lader dig slette filer permanent. Dens grænseflade er enkel og let at forstå, og hvis du vælger denne mulighed under installationsprocessen, tilføjer appen også en sletningsindstilling Send til File Shredder^{(Send to File Shredder)} til højrekliksmenuen fra Windows . Alternativ File Shredder^{(Alternate File Shredder)} lader dig slette både individuelle filer og hele mapper.

Alternativ File Shredder^{(Alternate File Shredder)} tilbyder kun én slettemetode: tilfældig dataskrivning. Du kan dog vælge, hvor mange gange de slettede filer skal overskrives. Du kan også vælge at makulere filnavne, så ikke kun indholdet af filerne bliver slettet, men også deres navne.

Da sletteprocessen var afsluttet, startede vi Recuva og tjekkede, om nogen af ​​filerne kunne gendannes. Recuva var i stand til at finde 113 af de slettede filer og kunne gendanne 109 af dem. Ingen af ​​de gendannede filer kunne dog bruges, da de alle var beskadigede.

Download: Alternativ File Shredder^{(Alternate File Shredder)}

3. Moo0 File Shredder

Moo0 File Shredder er en let applikation med en minimalistisk brugergrænseflade. Når du har startet det, skal du blot trække og slippe enhver fil eller mappe, som du vil slette permanent. Desværre tilføjer Moo0 File Shredder ikke nogen slettemulighed til Windows 'højrekliksmenuer, og den forsøger også at samle nogle "Yderligere gratis værktøjer^(Tools) " under installationen. Sørg for at fjerne markeringen af ​​denne mulighed under installationen.

Som standard lader grænsefladen dig vælge den slettemetode, der skal bruges. Hvis du trykker på knappen Detaljeret beskrivelse^{(Detailed Description)} , udvides programmets vindue og giver dig mulighed for at se flere detaljer om hver af de tilgængelige metoder. Moo0 File Shredder tilbyder 4 slettealgoritmer, inklusive Gutmann .

Da vi kørte Recuva for at kontrollere, om nogen af ​​slettede filer kan gendannes, var vi glade for at opdage, at de alle blev slettet permanent.

Download: Moo0 File Shredder

4. Freeraser

Freeraser er en anden app designet til at hjælpe dig med at slette filer sikkert. Dens grænseflade er usædvanlig minimalistisk: det er bare en simpel skraldespand.

Men hvis du højreklikker på den, åbnes en kontekstmenu, der giver dig flere muligheder. Vi ville også gerne have, hvis Freeraser havde en slettemulighed i Windows ' kontekstuelle menuer. Det gør den desværre ikke.

Sund fornuft og den officielle dokumentation fortæller os, at for at slette filer eller mapper; det er tilstrækkeligt at trække og slippe sådanne elementer på Freerasers^(Freeraser) ikon. Men på vores Windows 10 bærbare computer virkede denne funktion ikke, så vi var nødt til at bruge appens menu til at vælge det sæt filer, vi ville slette. Når du har valgt de filer, der skal slettes, og bekræfte handlingen, ændres Freerasers^(Freeraser) bin, så du ved, at sletteprocessen blev startet. Freeraser tilbyder 3 makuleringsalgoritmer, inklusive de 35 gennemløb, Gutmann- metoden.

Efter at alle filerne var blevet slettet sikkert, relancerede vi Recuva for at se, om nogen af ​​dem stadig kunne gendannes. Det var heldigvis ikke tilfældet.

Download: Freeraser

5. Filmakulator

File Shredder er et andet program designet til at hjælpe dig med at slette filer permanent. Dens grænseflade er en smule mere kompliceret end størstedelen af ​​de andre programmer, der er inkluderet i vores roundup. Det er dog ligetil at bruge og forstå. File Shredder tilføjer også sletteindstillinger i Windows 'højrekliksmenuer.

For at slette filer eller mapper med File Shredder , kan du trække og slippe dem på dens grænseflade, eller du kan bruge en af ​​knapperne Tilføj fil(er)^{(Add File(s))} eller Tilføj mappe . ^{(Add Folder)}File Shredder tilbyder 5 slettemetoder, inklusive den komplekse Gutmann - metode.

Efter at File Shredder slettede hver fil fra vores testmappe, forsøgte vi at gendanne dem ved hjælp af Recuva . Men ingen af ​​de slettede filer kunne gendannes.

Download: File Shredder

6. WipeFile

WipeFile er et let, bærbart viskelæder med en letforståelig brugergrænseflade. Den hurtigste måde, hvorpå du kan vælge, hvilke filer eller mapper du vil slette permanent, er at trække og slippe dem på vinduet. WipeFile tilbyder fjorten forskellige metoder til fjernelse af data, inklusive Gutmann - metoden.

Da vi kørte Recuva for at kontrollere, om nogen af ​​slettede filer kan gendannes, kunne vi ikke finde nogen, og det er et fremragende resultat.

Download: WipeFile

7. BitKiller

BitKiller er endnu et lille bærbart værktøj, der lader dig slette filer permanent fra dine Windows -enheder. Dens brugergrænseflade er enkel og ligetil og tilbyder dig fem forskellige metoder til dataoverskrivning. Gutmann- metoden er også til stede, så det er en god ting.

Efter at vi brugte BitKiller til at slette alle filerne i vores testmappe, forsøgte vi at gendanne dem ved hjælp af Recuva . Gode ​​nyheder: ingen af ​​de slettede filer kunne gendannes.

Download: BitKiller

8. DP Wipe

DP Wipe kommer med en enkel brugergrænseflade, der understøtter træk og slip og kun tilbyder få muligheder. Den kan dog bruge seks forskellige datasletningsmetoder, og Gutmann er en af ​​dem.

Da DP Wipe afsluttede sletningen, kørte vi Recuva på den slettede mappe. Resultatet var, at ingen af ​​de slettede filer kunne gendannes.

Download: DP Wipe

Det bedste gratis viskelæder til Windows er:

Nedenfor kan du se en tabel, vi har lavet for at få et bedre billede af vores resultater.

Hvis du ser på de tal og funktioner, som hvert program tilbyder; vinderen skiller sig ud med det samme. Ud af alle de gratis apps, som vi testede i denne roundup, er Eraser den bedste filmakulator.

Sammenlignet med de andre apps tilbyder Eraser et af de mest omfattende udvalg af slettealgoritmer og den bedste brugergrænseflade samt flere konfigurationsmuligheder. Alle de andre programmer halter sammenlignet med Eraser . Den eneste, der tilbyder endnu flere algoritmer, er WipeFile , men den passer ikke til Eraser med hensyn til brugergrænsefladen. De andre kommer ikke engang i nærheden af ​​antallet af inkluderede slettemetoder, selvom nogle af dem tilbyder de bedste på denne branche: Gutmann- og DoD- algoritmerne.

Andre fungerer godt nok, men mangler kontekstuelle menuindstillinger (inklusive WipeFile ), som gør hele sletningen meget hurtigere og mere komfortabel.

Konklusion

Vi håber, at vores gratis sammenfatning af filmakulatorer var nyttig. Selvom du ikke bruger sådan et program regelmæssigt, skader det ikke at have et klar på din Windows -enhed. Du ved aldrig, hvornår du skal sikre dig, at nogle filer slettes permanent, uden chance for gendannelse. Endnu mere, hvis du arbejder på en computer, som du deler med andre.

8 best free data erasing apps that permanently delete your files and folders

There are many ways to reсover deleted files from hard drives. The deleted files are not necessarily lost forever, and with the appropriate programs, you can reѕtore them. Howеver, what if you do not want that? Maуbe you have sоme files that you want to erase forever. Maybe they contain sensitive information, which you do not want to be reсovered. To dо that, you have to mаke sure the files are not just deleted, but also overwritten in such a mаnner that they сannot be recovered. In this article, we analyze the best freе tools for ѕecurely wiping files on Windows cоmputers:

How we tested the permanent file erasers

Before testing each file shredder, we created an empty folder on our test computer. Then, we placed lots of different files inside it. In total, the folder contained 2.66 GB of data in 123 files, with various file formats: bmp, cur, docx, jpg, mkv, mp3, pdf, png, txt, and xlsx.

Next, we used every file shredding app from our roundup, to wipe everything inside this folder. For each of the shredding programs, we used the most complex erasing method it offered. We also noted how many erasing algorithms each app offers and how easy it is to use. Then, when all our test files were deleted and securely overwritten, we ran Recuva to check if any of the deleted files could still be recovered.

We repeated all these steps for each file shredding app that we tested. We chose the apps you see below because they are free and also popular. We did not want to include commercial software, as not many home users are willing to spend money on such programs.

1. Eraser

Eraser is a small app that can securely delete files, folders, unused disk space or even entire drives. To use Eraser, you have to download and install it. When done, it automatically adds secure delete options to the Windows right-click menu.

In addition to the contextual menu options, Eraser's interface also allows you to create scheduled erasing tasks. This feature is handy in case you work with data that you want to be wiped out regularly.

While it supports 13 different erasure methods, the one it uses by default is the Gutmann standard. This method overwrites the deleted files 35 times, which means that, depending on the number of files you delete, the process might take a while.

Now it was time to check how well Eraser performed. So we ran Recuva on the wiped folder. The result was that none of the deleted files could be recovered.

Download: Eraser

2. Alternate File Shredder

Alternate File Shredder is a small app that lets you permanently delete files. Its interface is simple and easy to understand and, if you select this option during its install process, the app also adds a Send to File Shredder erasing option to the right-click menu from Windows. Alternate File Shredder lets you delete both individual files and entire folders.

Alternate File Shredder offers only one erasing method: random data writing. However, you can choose the number of times the deleted files are overwritten. You can also choose to shred file names, so not only the contents of the files get erased, but also their names.

When the erase process was completed, we started Recuva and checked if any of the files were recoverable. Recuva was able to find 113 of the deleted files and could recover 109 of them. However, none of the recovered files could be used, as they were all corrupted.

Download: Alternate File Shredder

3. Moo0 File Shredder

Moo0 File Shredder is a lightweight application with a minimalist user interface. Once you launch it, all you have to do is drag and drop any file or folder that you want to delete permanently. Unfortunately, Moo0 File Shredder does not add any erasing option to Windows' right-click menus, and it also tries to bundle some "Additional Free Tools" during its installation. Make sure you uncheck this option during the installation.

By default, the interface lets you select the erasing method to be used. If you press the Detailed Description button, the program's window expands and lets you see more details about each of the methods available. Moo0 File Shredder offers 4 erasing algorithms, including Gutmann.

When we ran Recuva to check if any of deleted files can be recovered, we were happy to find that they were all permanently wiped.

Download: Moo0 File Shredder

4. Freeraser

Freeraser is another app designed to help you securely delete files. Its interface is exceptionally minimalist: it's just a simple trash bin.

However, if you right-click on it, a contextual menu opens, offering you more options. We would have also liked if Freeraser had an erase option in Windows' contextual menus. Unfortunately, it does not.

Common sense and the official documentation tells us that to delete files or folders; it suffices to drag and drop such items onto Freeraser's icon. However, on our Windows 10 laptop this feature did not work, so we had to use the app's menu to select the set of files we wanted to wipe. Once you select the files to be wiped and confirm the action, Freeraser's bin changes so that you know the erasing process was started. Freeraser offers 3 shredding algorithms, including the 35 passes, Gutmann method.

After all the files were securely deleted, we relaunched Recuva, to see if any of them were still recoverable. Fortunately, that was not the case.

Download: Freeraser

5. File Shredder

File Shredder is another program designed to help you delete files permanently. Its interface is a bit more complicated than the majority of the other programs included in our roundup. However, it is straightforward to use and understand. Also, File Shredder adds erasing options in Windows' right-click menus.

To wipe files or folders with File Shredder, you can drag and drop them on its interface, or you can use one of the Add File(s) or Add Folder buttons. File Shredder offers 5 erasing methods, including the complex Gutmann method.

After File Shredder erased every file from our test folder, we tried to recover them using Recuva. However, none of the deleted files could be recovered.

Download: File Shredder

6. WipeFile

WipeFile is a lightweight, portable file eraser with an easy to understand user interface. The fastest way in which you can select what files or folders you want to delete permanently is to drag and drop them onto its window. WipeFile offers fourteen different data removal methods, including the Gutmann method.

When we ran Recuva to check if any of deleted files can be recovered, we could not find any, and that is an excellent result.

Download: WipeFile

7. BitKiller

BitKiller is yet another small portable tool that lets you permanently delete files from your Windows devices. Its user interface is simple and straightforward and offers you five different data overwrite methods. The Gutmann method is present too, so that is a good thing.

After we used BitKiller to erase all the files in our test folder, we tried to recover them using Recuva. Good news: none of the deleted files could be recovered.

Download: BitKiller

8. DP Wipe

DP Wipe comes with a simple user interface that supports drag and drop and only offers a few options. However, it can use six different data erasing method, and Gutmann is one of them.

Once DP Wipe ended the erasing, we ran Recuva on the wiped folder. The result was that none of the deleted files could be recovered.

Download: DP Wipe

The best free file eraser for Windows is:

Below, you can see a table we created to get a better picture of our findings.

If you look at the numbers and features each program offers; the winner immediately stands out. Out of all the free apps that we tested in this roundup, Eraser is the best file shredder.

When compared to the other apps, Eraser offers one of the most extensive selections of erasure algorithms and the best user interface, as well as more configuration options. All the other programs are lagging when compared to Eraser. The only one that offers even more algorithms is WipeFile, but it is no match to Eraser regarding the user interface. The others do not even come close to the number of erasing methods included, even if some of them offer the best ones on this line of work: the Gutmann and the DoD algorithms.

Others work well enough but lack contextual menu options (including WipeFile), which do the whole erasing thing much faster and more comfortable.

Conclusion

We hope that our free file shredders roundup was helpful. Even if you do not use such a program on a regular basis, it does not hurt to have one ready on your Windows device. You never know when you need to make sure that some files are deleted permanently, with no chance of recovery. Even more so, if you are working on a computer that you share with others.

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