tonhowtf/omniget · error

Ghostscript nao encontrado

Error message

Ghostscript nao encontrado

What it means

When compression mode is "gs" but the ghostscript executable cannot be located on the system, the tool throws "Ghostscript nao encontrado" ("Ghostscript not found") instead of attempting compression. Raster-based compression can proceed, but explicit gs mode cannot without the binary.

Solutions

1. Install ghostscript (apt install ghostscript / brew install ghostscript / choco install ghostscript).
2. Ensure the gs binary's directory is on PATH for the app process.
3. Use a different compression mode that doesn't require ghostscript.
4. In Docker, add ghostscript to the image packages.

Example fix

// Dockerfile before
FROM ubuntu:24.04

// after
FROM ubuntu:24.04
RUN apt-get update && apt-get install -y ghostscript

fn ghostscript_available() -> bool {
    std::process::Command::new("gs").arg("--version").output()
        .map(|o| o.status.success()).unwrap_or(false)
}
// choose mode: if !ghostscript_available() && opts.mode == "gs" { opts.mode = "raster".into(); }

let result = compress(&opts, &progress).await;
match result {
    Err(e) if e.to_string().contains("Ghostscript nao encontrado") => {
        let mut fallback_opts = opts.clone();
        fallback_opts.mode = "raster".into(); // path that does not need gs
        compress(&fallback_opts, &progress).await
    }
    other => other,
}

When it happens

Trigger: Calling compress with opts.mode == "gs" on a machine where the gs/ghostscript binary is not installed or is absent from PATH.

Common situations: Fresh OS installs without ghostscript; Windows users without gs in PATH; Docker/CI images stripped of ghostscript; sandboxed Tauri environments with a minimal PATH.

Understand the failure class

Background: "not installed", "pip install", "required for": how missing-dependency errors surface across open-source libraries — this error's family across 34 libraries.

Related errors

• ghostscript falhou
• tesseract nao esta instalado
• ghostscript não gerou nada
• Ghostscript não encontrado nesta máquina
• aria2c binary not found after extraction

AI-assisted analysis of tonhowtf/omniget@8600b91f42 (2026-09-12). Data as JSON: /api/errors/74c484f1d7ed5359. Report an issue: GitHub.

Appendix: source

Thrown at src-tauri/omniget-core/src/core/tools/pdf.rs:1183

            .unwrap_or(0);
            report(&progress, "done", 1, Some(1), None);
            return Ok(CompressResult {
                output: output.to_string_lossy().to_string(),
                before,
                after,
                method: "ghostscript".into(),
                pages,
            });
        }
        if opts.mode == "gs" {
            return Err(anyhow!(
                "ghostscript falhou: {}",
                String::from_utf8_lossy(&o.stderr).trim()
            ));
        }
        let _ = std::fs::remove_file(&output);
    } else if opts.mode == "gs" {
        return Err(anyhow!("Ghostscript nao encontrado"));
    }
    let dpi = if opts.dpi == 0 { 110 } else { opts.dpi };
    let quality = if opts.quality == 0 { 60 } else { opts.quality };
    let out =
        tokio::task::spawn_blocking(move || rasterize(&input, &output, dpi, quality, &progress))
            .await??;
    Ok(CompressResult {
        output: out.output,
        before,
        after: out.bytes,
        method: "raster".into(),
        pages: out.pages,
    })
}

/// Dangerzone sem contêiner: cada página vira pixels e o PDF é remontado
/// só com imagens. Scripts, formulários, links e anexos não sobrevivem.
pub fn sanitize(

View on GitHub (pinned to 8600b91f42)