PDF to Grayscale

Kill the colour.

Save the ink.

Drop your PDF here

or tap to browse · max 200 MB

Three steps. Zero uploads.

Drop

Drag your PDF onto the page. It never leaves your device.

Convert

Every page is rendered and desaturated locally in your browser. No server involved.

Download

Save the grayscale PDF. Nothing was ever uploaded.

Your PDF never leaves your machine.

Most online grayscale converters upload your document to a remote server, strip the colour there, and send back the result. Your file passes through infrastructure you cannot audit.

fwip works differently. The conversion engine runs entirely in your browser. Your PDF is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Frequently asked.

How do I convert a PDF to grayscale without uploading it?▾

Drop your PDF onto fwip. Each page is rendered and desaturated entirely inside your browser using the Canvas API. The grayscale pages are assembled into a new PDF on your device. No server is involved.

Does converting PDF to grayscale reduce file size?▾

Often yes. Removing colour information and re-encoding pages as JPEG can significantly shrink image-heavy PDFs. Text-only documents see smaller gains.

Will grayscale conversion affect text quality?▾

fwip renders each page at 150 DPI and embeds the result as a JPEG image. Text remains sharp and legible, though the output is rasterised rather than vector. For most printing needs the quality is excellent.

Is there a page or file size limit for PDF grayscale conversion?▾

The browser version handles files up to 200 MB comfortably. For larger files or batch processing, the offline bundle has no size limit.

Like it? Own it.

Offline. No browser. No internet. No excuses.

$15

This tool

PDF to Grayscale · offline
Batch processing
No file size limit
3 devices · one payment

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All 36 pdf tools · offline
Batch processing
No file size limit
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