Is GIMP Safe? How to Verify You're Downloading Official GIMP

GIMP itself is completely safe software. The risk is not in the software - It is in where you download it from. This page explains how to identify the official sources, spot fake sites, verify your download cryptographically, and understand the security warnings your operating system may show.

Official and Trusted Download Sources

There are a small number of genuinely safe places to get GIMP. These are the only sources you should trust:

The key principle: if you are on a website other than these and that site is offering a GIMP download, stop and navigate directly to gimp.org instead. There is no legitimate reason to download GIMP from a third-party file hosting site. See the dedicated installation guides for Windows, macOS, and Linux for step-by-step help after downloading.

How to Identify Fake GIMP Sites

The GIMP name is well-known, and search engine results for "download GIMP" frequently surface unofficial sites that range from mildly annoying (bundleware) to actively malicious (malware). Here are the red flags to watch for:

Visual and UX Red Flags

• Multiple "Download" buttons - Fake sites often have three or four different green "Download Now" buttons on the page. The real one is buried among advertisements designed to look like buttons.
• "Turbo Download", "Fast Download", or "Secure Download" buttons - These typically download a proprietary download manager or installer wrapper, not GIMP itself.
• Urgency messaging - "Your version is out of date! Update now." appearing on a download page for software you haven't installed yet is a red flag.
• Pop-up ads or redirects - The official GIMP site does not display pop-up advertisements.
• Requests to disable antivirus - Legitimate software never asks you to disable your security software before installation.

Domain Red Flags

• Domains that are not gimp.org - The official site is gimp.org. Any other domain - Even ones that look similar like "gimp-download.org" or "gimp-free.com" - Is not official.
• Country-code TLDs with GIMP branding - Sites like gimp.co, gimp.net, or gimp.io are not official.
• HTTPS but wrong domain - Having an HTTPS certificate does not make a site legitimate. Malicious sites can and do obtain certificates. Always check the domain name, not just the padlock icon.

File Red Flags

• EXE files with unexpected names - Official GIMP Windows installers are named in the format gimp-3.2.4-setup.exe. A file named GIMPInstaller.exe or download-manager.exe is not official.
• File size mismatch - The GIMP installer is approximately 200–300 MB. A "GIMP download" that is only 2–5 MB is a downloader stub, not the real installer.

SHA-256 Checksum Verification

Even if you download from what appears to be the official source, you can cryptographically verify that the file you received is exactly the file the GIMP project published. This is done using the SHA-256 checksum that GIMP publishes alongside each download.

The GIMP download page at gimp.org lists SHA-256 checksums for every installer. After downloading, verify your file matches the published checksum using your operating system's built-in tools:

Windows (Command Prompt or PowerShell)

# Using certutil (Command Prompt)
certutil -hashfile gimp-3.2.4-setup.exe SHA256

# Using PowerShell
Get-FileHash gimp-3.2.4-setup.exe -Algorithm SHA256

Compare the output hash to the SHA-256 value listed on the GIMP download page. They must match character for character. If they differ by even a single character, do not install the file - It has been tampered with or corrupted in transit.

macOS (Terminal)

shasum -a 256 gimp-3.2.4.dmg

Linux (Terminal)

sha256sum gimp-3.2.4.tar.bz2

Many users skip this step and never encounter a problem. But if you are downloading GIMP for a production environment, a client's computer, or a system where security matters, checksum verification takes thirty seconds and eliminates the risk of installing a modified installer.

macOS Gatekeeper Warning - Why It Appears and What to Do

When you first open GIMP on macOS, you may see a dialog saying something like: "GIMP.app can't be opened because Apple cannot check it for malicious software." or "GIMP.app is from an unidentified developer."

This is normal and expected behavior for official GIMP builds. Here is why it happens:

Apple's Gatekeeper system requires applications to be signed with an Apple Developer ID certificate (costing $99/year) and, for the strongest warning to be suppressed, also notarized by Apple's servers. The GIMP project does not pay for Apple notarization. This is a financial and philosophical choice - The developers do not believe they should have to pay Apple for the right to distribute free software.

The warning does not mean GIMP is malicious. It means GIMP has not paid Apple's certification fee. To open GIMP after seeing this warning:

1. Open System Settings (or System Preferences on older macOS)
2. Go to Privacy & Security
3. Scroll down to find a message about GIMP being blocked
4. Click Open Anyway

Alternatively, right-click (or Control-click) the GIMP.app icon in Finder and select "Open" from the context menu. This bypasses the Gatekeeper block for that specific application.

You only need to do this once. After you confirm you want to open GIMP, macOS remembers the exception and GIMP will open normally from that point forward.

Windows SmartScreen Warning

On Windows, you may see a blue dialog from Windows Defender SmartScreen saying: "Windows protected your PC - Windows Defender SmartScreen prevented an unrecognized app from starting."

Like the macOS Gatekeeper warning, this is normal for GIMP. SmartScreen assigns trust based on how many users have run a particular installer - A process called reputation building. New GIMP releases initially have no reputation because the installer file is brand new. After thousands of users install it over days or weeks, SmartScreen's reputation score rises and the warning disappears for that specific build.

To proceed with the GIMP installer when SmartScreen appears:

1. Click "More info" on the SmartScreen dialog (this reveals additional options)
2. Click "Run anyway"

If the SmartScreen dialog does not show a "More info" link, the file may genuinely be problematic - Go back and verify your download source and checksum before proceeding.

What Open Source Means for Security

GIMP's open-source nature provides a meaningful (though not absolute) security advantage over closed-source software. GIMP is free to download from the official source.

Because GIMP's source code is publicly available at gitlab.gnome.org/GNOME/gimp, any security researcher, developer, or curious user can read every line of code that GIMP contains. There is nowhere to hide a keylogger, cryptocurrency miner, or data exfiltration routine in code that thousands of eyes can inspect.

This transparency is not a guarantee - Bugs and vulnerabilities exist in open-source software too, and most people do not personally review source code. But it does mean:

• Independent security researchers can audit GIMP and publicly disclose any vulnerabilities they find
• The compiled binary can be verified against the published source code by anyone with the tools to do so
• Any attempt to introduce malicious code into GIMP must pass through a public code review process where other contributors would see it
• Distributions that package GIMP (Linux distros, Homebrew, Flathub) also review the source before building their packages

Scanning with VirusTotal

If you want additional confidence before running a GIMP installer, you can scan it with VirusTotal - A free service that runs the file through over 70 different antivirus engines simultaneously.

How to Use VirusTotal

1. Go to virustotal.com
2. Click the Choose file button on the "File" tab
3. Select your downloaded GIMP installer
4. Wait for the scan to complete (usually 30–60 seconds)

Interpreting VirusTotal Results

For official GIMP installers, you should expect to see a result like "0/72 security vendors flagged this file as malicious" or very close to that. A small number of false positives (1–3 detections out of 70+) sometimes occur with new installers and are typically heuristic detections that clear up as the file becomes more widely seen.

If VirusTotal shows many detections (10 or more), treat that as a serious warning and do not proceed with the installation. Delete the file and download again from the official source, then re-scan.

Note: VirusTotal has a file size limit of 650 MB. GIMP installers are typically well under this limit.

Fake GIMP Domains to Avoid

The following are examples of the types of unofficial sites that appear in search results for GIMP downloads. These sites are not affiliated with the GIMP project and should be avoided:

The single rule that eliminates all risk from fake sites: bookmark https://www.gimp.org/downloads/ and always download GIMP from there. If you are on a different site and about to click a download link, stop, close the tab, and go to gimp.org directly. This takes five seconds and completely eliminates the risk of downloading a tampered or bundled version.