Is it a Virus?
✔ NO - Safe
Must be located at C:\Program Files\Sejda\Sejda PDF Desktop\sejda-pdf.exe
Warning
Typically benign when from the official installer
If located outside Program Files or without a valid signature, exercise caution
Can I Disable?
✔ YES
Close Sejda tasks or disable startup/background processing as needed
What is sejda-pdf.exe?
sejda-pdf.exe is the launcher for Sejda PDF Desktop. It starts the GUI or a CLI wrapper to perform offline PDF tasks such as merging, splitting, compressing, converting, and editing files. The executable coordinates the bundled runtime and modules to execute operations locally.
Sejda-pdf.exe launches the Java-based Sejda core, providing a GUI or CLI interface. It delegates PDF processing to internal modules and libraries, enabling reliable, offline operations without requiring a browser, while preserving document structure.
Quick Fact: Sejda PDF Desktop runs as a standalone application; operations occur locally without sending files to the cloud unless you choose cloud-based features.
Types of Sejda Processes
- GUI Process: Main window and user interactions for PDF tasks
- CLI Wrapper: Command-line interface for batch and automated jobs
- Worker Modules: Internal components handling merging, splitting, and conversion
- Updater/Background: Background checks for updates or license verification
Is sejda-pdf.exe Safe?
Yes, sejda-pdf.exe is safe when downloaded from Sejda's official site or bundled installer. Use only authentic installers to avoid tampering.
Is sejda-pdf.exe a Virus or Malware?
The legitimate sejda-pdf.exe is not a virus. Malware may masquerade with similar names; verify digital signature and path.
How to Tell if sejda-pdf.exe is Legitimate or Malware
- File Location: Must be in C:\Program Files\Sejda\Sejda PDF Desktop\sejda-pdf.exe or C:\Program Files (x86)\Sejda\Sejda PDF Desktop\sejda-pdf.exe. Any other location is suspicious.
- Digital Signature: Right-click sejda-pdf.exe → Properties → Digital Signatures. Should show a valid signature from "Sejda Ltd".
- Resource Usage: Normal usage is 1-15% CPU per task and 20-180 MB memory. Extremely high usage when idle is suspicious.
- Behavior: Should run when launching Sejda or processing a job. Constant background activity or unexpected network calls may indicate malware.
Red Flags: If sejda-pdf.exe is located in unusual folders (like Temp, AppData\Roaming, or System32), runs when not launching Sejda, has no digital signature, or uses persistent network connections, scan with antivirus software. Watch for similarly named files like "sejda-pdf32.exe" or "sejda-pdf64.exe" from untrusted sources.
Why Is sejda-pdf.exe Running on My PC?
sejda-pdf.exe runs when you actively use Sejda PDF Desktop or when background tasks like updates or automated batch jobs are configured.
Reasons it's running:
- Active PDF Tasks: A merge, split, extract, convert, or compress job is currently executing, spawning worker processes.
- Background Tasks: Update checks, license verifications, or file watching for automation may run in the background.
- CLI or Script Invocation: If you launched sejda-pdf.exe from a batch file or automation script, its processing components start accordingly.
- File Associations: PDFs or related file types may be registered to open with Sejda by double-clicking, triggering the executable.
- Auto-Update / Maintenance: Sejda may periodically run minor maintenance tasks or check for updates, briefly using CPU and memory.
Can I Disable or Remove sejda-pdf.exe?
Yes, you can disable sejda-pdf.exe. You can close Sejda tasks, disable startup, and uninstall Sejda PDF Desktop if desired.
How to Stop sejda-pdf.exe
- End Active Tasks: In the GUI, cancel running jobs or use the CLI to terminate a batch task.
- Close GUI: Close the Sejda window or use the system tray to exit.
- Disable Startup: Task Manager → Startup tab → Disable Sejda PDF Desktop
- Stop Background Tasks: In Sejda Settings → Updates, disable automatic updates and background processing
- Uninstall: Windows Settings → Apps → Sejda PDF Desktop → Uninstall
How to Uninstall Sejda PDF Desktop
- ✔ Windows Settings → Apps → Apps & Features → Sejda PDF Desktop → Uninstall
- ✔ Control Panel → Programs → Programs and Features → Sejda PDF Desktop → Uninstall
- ✔ Restart your computer after uninstall
Common Problems: High CPU or Memory Usage
If sejda-pdf.exe is consuming excessive resources:
Common Causes & Solutions
- Large or complex PDFs (many pages, complex layouts): Annotate or split tasks, reduce concurrently running jobs, or use the CLI with batch options to limit UI overhead.
- Background updates or monitoring enabled: Disable automatic updates in Sejda Settings and disable background file watching.
- Many concurrent tasks: Limit parallel jobs in CLI or close unnecessary GUI tabs/tasks.
- Outdated software: Update Sejda PDF Desktop to the latest version from official sources.
- Corrupted installation: Run repair or reinstall Sejda PDF Desktop from the official installer.
- System memory pressure: Close other applications or run heavy tasks one at a time; consider increasing physical RAM if needed.
Quick Fixes:
1. Cancel long-running tasks in the GUI or via CLI
2. Close Sejda and restart the application
3. Check for updates and install the latest version
4. Limit parallel operations in your batch scripts
5. Ensure sufficient free memory and disk space
Frequently Asked Questions
Is sejda-pdf.exe safe?
Yes, sejda-pdf.exe is safe when downloaded from Sejda official sources. Verify the path is C:\Program Files\Sejda\Sejda PDF Desktop\sejda-pdf.exe and that the digital signature shows Sejda Ltd.
Where is sejda-pdf.exe located on Windows?
Typical locations are C:\Program Files\Sejda\Sejda PDF Desktop\sejda-pdf.exe or C:\Program Files (x86)\Sejda\Sejda PDF Desktop\sejda-pdf.exe.
How do I use sejda-pdf.exe from the CLI?
Open a command prompt and run sejda-pdf.exe with the desired command flags (e.g., for batch operations). Refer to Sejda CLI documentation for syntax and supported options.
Can I uninstall Sejda PDF Desktop?
Yes. Use Windows Settings → Apps → Sejda PDF Desktop → Uninstall or the Control Panel uninstall option. Your local PDFs remain on disk unless you delete them manually.
Why is sejda-pdf.exe running in the background?
Background activity may occur during updates, license checks, or when a batch job is queued. You can disable background processing in Sejda settings or stop startup tasks.
How can I reduce Sejda's memory usage?
Process smaller PDFs at a time, close unused tasks, disable unnecessary features, update to the latest version, and use the CLI for batch processing to reduce UI overhead.