PosteRazor for Linux: Install Guide
PosteRazor — the free, open-source tool that slices one big image into a multi-page PDF poster you can print on a regular printer — has an official Linux build. There is no complicated installation: you download an archive, install two small system libraries it depends on, extract, and run. This guide covers the download, the dependencies (FLTK and FreeImage), and how to get it running on Ubuntu/Debian, Fedora, Arch, and other distributions.
sudo apt install libfltk1.3 libfreeimage3 (package names vary by distro; check your package manager). Extract the archive, make the binary executable with chmod +x PosteRazor, and launch it with ./PosteRazor. There is no official AppImage, Flatpak, or Snap — the tarball is the official Linux distribution.
Download PosteRazor for Linux
The Linux build is hosted on the official SourceForge project page. The button below goes through our download redirect:
Version note: the last stable release of PosteRazor is v1.5.2, and the Linux build comes from the v1.5.x line. It is old but it is the genuine official build. To verify the file yourself, compare it against the official SourceForge project page.
What you get: no installer, just an archive
Unlike Windows software, the Linux build of PosteRazor ships as a compressed archive (tarball), not a .deb or .rpm package. There is no setup wizard and nothing is copied into system directories — you simply extract it wherever you like (your home folder is fine) and run the binary. The trade-off is that you must provide the shared libraries it was built against: FLTK (the GUI toolkit) and FreeImage (the image-loading library).
Step 1: install the dependencies
PosteRazor needs the FLTK and FreeImage runtime libraries. Package names differ between distributions, so use your distro’s package manager and search if the exact names below don’t match. The Ubuntu/Debian command is confirmed:
| Distribution | Command (package names may vary) |
|---|---|
| Ubuntu / Debian / Mint / Pop!_OS | sudo apt install libfltk1.3 libfreeimage3 |
| Fedora / RHEL / CentOS | sudo dnf install fltk freeimage (adjust names via dnf search if needed) |
| Arch / Manjaro | sudo pacman -S fltk freeimage (adjust names via pacman -Ss if needed) |
| openSUSE | Search YaST / zypper search for fltk and freeimage packages |
If a package name doesn’t exist on your distro, search first (e.g. apt search fltk) — library package names change across releases, and the search will show you the current one.
Step 2: extract and run
- Open a terminal in the folder where you downloaded the archive, or extract it with your file manager (right-click → Extract Here).
- In the terminal, move into the extracted folder, for example:
cd ~/Downloads/posterazor-* - Make the binary executable:
chmod +x PosteRazor - Launch it:
./PosteRazor
The 5-step wizard opens: load image → set paper → set overlap → set layout → save the multi-page PDF. Print the PDF at 100% scale and tape the sheets together into your poster.
Step 3 (optional): add a launcher to your app menu
If you’d rather not open a terminal every time, create a .desktop file so PosteRazor appears in your applications menu:
- Create the file
~/.local/share/applications/posterazor.desktopwith a text editor. - Paste in the following, adjusting the
ExecandIconpaths to wherever you extracted PosteRazor:
[Desktop Entry]
Type=Application
Name=PosteRazor
Exec=/home/YOURNAME/apps/posterazor/PosteRazor
Terminal=false
Categories=Graphics;
- Save, then look for PosteRazor in your app menu or activities overview.
Troubleshooting
“error while loading shared libraries: libfltk…” — the FLTK runtime isn’t installed. Run the dependency install command for your distro above, then try again.
“error while loading shared libraries: libfreeimage…” — same story for FreeImage. Install it via your package manager.
“Permission denied” when running ./PosteRazor — the executable bit is missing. Run chmod +x PosteRazor in the extracted folder.
The window opens but looks tiny or dated — normal. PosteRazor’s FLTK interface is old and doesn’t do HiDPI scaling well; the generated PDF output is unaffected.
Nothing happens at all — launch it from the terminal (./PosteRazor) instead of double-clicking, so you can see the actual error message, then match it to the cases above.
A note on AppImage / Flatpak / Snap
There is no official AppImage, Flatpak, or Snap of PosteRazor — the tarball described on this page is the only official Linux distribution. You may find community-made packages in the AUR or other third-party repositories; those are unofficial, so check their build scripts and comments before installing. If you just want the tool with zero system changes, PosteRazor Online runs the same workflow in your browser.
Frequently asked questions
Which Linux distributions does PosteRazor support?
The official build is a portable tarball, so it runs on any reasonably modern distribution as long as the FLTK and FreeImage libraries are installed. The steps above cover Ubuntu/Debian, Fedora, Arch, and openSUSE; other distros just need the equivalent library packages.
What dependencies does PosteRazor need on Linux?
Two: the FLTK GUI toolkit runtime and the FreeImage image library. On Ubuntu/Debian install them with sudo apt install libfltk1.3 libfreeimage3. Other distributions carry the same libraries under slightly different package names — search your package manager if the names differ.
Is there an official AppImage of PosteRazor?
No. There is no official AppImage, Flatpak, or Snap. The tarball is the official Linux distribution. Community packages exist but are unofficial.
How do I uninstall PosteRazor on Linux?
Since nothing is installed into system directories, “uninstalling” just means deleting the folder you extracted it to (and the optional .desktop launcher file, if you made one). The FLTK/FreeImage libraries can stay — other programs may use them — or be removed with your package manager.
PosteRazor won’t start — how do I see what’s wrong?
Always launch it from a terminal with ./PosteRazor instead of double-clicking. The terminal shows the real error (usually a missing shared library), which points directly at the fix.
Can I use PosteRazor on Linux without installing anything?
Yes — PosteRazor Online runs the full poster-splitting workflow in your browser with nothing to download or install.