Filozy
← All tools

Runs entirely in your browser

Convert a PDF to greyscale

Converts a PDF to greyscale by rewriting the colour where the file records it, so text stays selectable and searchable instead of being flattened into pictures.

Rename file

Optimize PDF · quick answer

What Grayscale PDF does

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.

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.

Essential questions

Does Grayscale PDF upload my file?

No. The selected file is opened and processed by code running in this browser tab. Document bytes and filenames are not sent to Filozy.

Will this change my original file?

No. Browsers cannot silently overwrite the file you selected. Filozy creates a separate result for you to save or pass to another local tool.

See a worked example, troubleshooting and the full FAQ →