Convert a PDF to greyscale

Optimize PDF · quick answer

What Grayscale PDF does

Grayscale PDF is a browser-based Filozy tool built for this task: Drop the color without flattening the text into pixels. It runs on this device, creates a separate result, and does not require an account or document upload.

Use Grayscale PDF to choose one PDF, remove color while preserving text and vector content where possible. The converter reports whether images were re-encoded and warns when a tightly compressed scan can grow. Filozy starts the document engine only after you choose a file, performs the work inside this tab, and creates a new result for you to save. Your selected document, its filename, and its contents are not sent to Filozy.

How to grayscale pdf in your browser

1. Choose one PDFSelect one PDF from the dropzone. Filozy reads it locally and shows the relevant preview or controls before changing anything.
2. Review the settingsUse the page preview and available options to decide exactly how grayscale pdf should handle this document.
3. Create and check the resultRun the tool, review the reported page count, size, or notes, then save the newly created file while keeping the original.

Before you start

• Decide whether the priority is smaller size, cleaner page edges, compatibility, or visual quality.
• Keep the original because optimization can intentionally remove editable or unused document data.
• Open image-heavy or scanned pages at normal reading size so quality changes are easy to notice.

Limits worth knowing

• The result depends on the structure and quality of the source document, so visually inspect the exported file before relying on it.
• Browser memory varies by device. Very large or unusually complex PDFs may work better when processed in smaller groups.

Frequently asked questions