Print without black ink

Black cartridge empty, but the color one is still full? Convert your document so that everything black becomes dark blue (or any color you like) and print it with your color cartridge. Works with PDF and Word (.docx) files.

100% private: your document never leaves your device. Everything happens in your browser — no upload, no server, no sign-up. Feel free to turn off your Wi-Fi and try it.

Drop your PDF or .docx here

or click to browse — max 50 MB

Print color

How it works

  1. 1. Pick your document

    Choose the PDF or Word file you need to print. It is opened locally in your browser — it is never uploaded anywhere.

  2. 2. Pick a color

    Dark blue is the recommended default: it stays easy to read and your printer can mix it from the color cartridge. Prefer dark green, brown or purple? Your call.

  3. 3. Download & print

    Download the converted copy and print it as usual. Your printer will use the color cartridge instead of the empty black one.

Why dark blue?

Inkjet printers mix cyan, magenta and yellow to print colors. Dark blue is made mostly of cyan and magenta, so it comes out deep and crisp — almost like real black — while using only the color cartridge. Printer experts recommend it as the most readable stand-in for black text in an emergency. Pure bright blue works too, but the darker the shade, the closer it looks to the black you are used to.

Frequently asked questions

Is my document uploaded to a server?

No. NoBlackInk runs entirely in your browser. Your document is read, converted and saved on your own device — no network request is ever made with your file. You can disconnect from the internet after the page loads and it will still work.

Which files are supported?

PDF (.pdf) and modern Word documents (.docx). The legacy .doc format is not supported — open it in Word or LibreOffice and save it as .docx first.

What exactly gets converted?

Everything that is pure black: text, lines and shapes in your document. Dark grays, colors and embedded images (photos, logos, scanned pages) are left unchanged.

My document has scanned pages or images — will those be converted?

No. Images inside a document (including scanned pages, which are just pictures of text) cannot be recolored by this tool. Only real text and vector graphics are converted.

Will it work with my printer?

It works with any inkjet printer that still has color ink. Note that some printer models refuse to print when any cartridge is completely empty — in that case, also check your printer settings for a “color only” or “ink backup” mode.

Does the conversion change my original file?

No. NoBlackInk creates a converted copy for download; your original document stays untouched.