PDF to black and white (greyscale)
For printing without colour
Up to 200 MB at a time. On a phone, large documents take longer and need more memory.
You can pick several PDFs. Each gets its own result, and you can also download them all as one ZIP.
Pages are turned into images of up to 144 dpi (4 megapixels per page at most). Searchable text, links, bookmarks and fillable forms don't carry over. Check the preview first.
Keep the original. Editing a PDF can invalidate a digital signature, and special features, forms and bookmarks may not carry over to the new file.
Choose a PDF or drop it here Choose PDF files or drop them here Choose JPG, PNG or WebP images or drop them here Up to 200 MB at a time. On a phone, large documents take longer and need more memory. Working… Processing page {n} of {total}… Done. Download your file. Choose a file first. The selected files are over 200 MB. Pick a smaller file or fewer files. “{name}” is empty. Choose another file. “{name}” is not a PDF. Choose a PDF document. “{name}” is not a JPG, PNG or WebP image. Choose a supported format. This PDF is password-protected. Open it in a program where you have access, save a copy without the password and try again. Not enough memory for this job. Choose a smaller file, a lower resolution or fewer pages. The processing library didn't load. Refresh the page and choose the file again. This file can't be processed. It may be damaged or use an unsupported encoding. Save a fresh copy and try again. The PDF has no pages to process. Enter pages from 1 to {count}, for example 1-3,5. The end of a range can't be lower than its start. The result would use too much memory. Choose fewer pages or a lower resolution. “{name}” is too large to process in the browser. Resize it to 16 megapixels at most and no more than 10,000 pixels on the longer side. Download {name} Move up Move down Remove Page {n} Pages: {n} Loaded: {name}. Pages: {n}. Order updated. Download the new file when you've finished. Can't show a preview of page {n}. Choose just one PDF file here. Add at least two PDF files to merge. Keep at least one page. Pages (leave empty for all pages) For example 1-3,5,8-10. The first page is page 1. Bring back all pages Drag to change the order, or use the arrow buttons. Remove anything you don't want in the result. JPEG quality Smaller file (55%) Medium quality (75%) Better quality (90%) Image resolution 96 dpi 144 dpi 200 dpi To keep things stable on phones, each image is capped at 4 megapixels. Larger pages get a lower resolution automatically. Keep the original. Editing a PDF can invalidate a digital signature, and special features, forms and bookmarks may not carry over to the new file. Before: {before}. After: {after}. {percent}% smaller. Before: {before}. After: {after}. The new file isn't any smaller. If you don't need other changes, keep the original. Enter margins between 0 and 40 mm. Images selected: {n}. Save PDF Rotation from the original 90° clockwise 180° 270° clockwise (90° anticlockwise) Choose PDF files Turn on JavaScript in your browser to process files. Settings changed. Run it again. Selected document Preview before you download Keep working on this file File for the next step Next step Continue Delete temporary files Temporary transfer files deleted. The file is kept for a short time in this browser only. It's deleted as soon as the next tool picks it up, or on your next visit after 15 minutes at the latest. Passing files between tools doesn't work in this browser. Download the result and choose it in the next tool. The transfer has expired, was already used or isn't available. Choose the file from your device. Compress PDF Merge PDF Rotate PDF Extract pages Insert pages Crop margins Change page size Pages per sheet Merge fronts and backs Remove blank pages Add page numbers Header & Bates numbering Add a watermark Convert to greyscale Flatten forms and comments Edit metadata Edit bookmarks Split by size or bookmarks Split by page ranges Convert to JPG Delete or reorder pages Check the values you entered. Numbers must be within the range shown. Type the text you want to add. Choose the second file too. Choose two PDF files for this. Find blank pages Tick the pages to remove. Look at each one before you confirm. No blank pages found. You can still tick pages to remove by hand. Possibly blank This page has content Remove page {n} Each line should read: page number | title. The page must exist in the document. The document has no bookmarks pointing to pages. You can add them with the Bookmarks tool. You can't remove every page. Keep at least one. Files loaded: {n}. You can pick several PDFs. Each gets its own result, and you can also download them all as one ZIP. Second file Choose another file Number position Bottom centre Top centre Pages are turned into images of up to 144 dpi (4 megapixels per page at most). Searchable text, links, bookmarks and fillable forms don't carry over. Check the preview first. Keep the original. Layout and content stay visible, but forms, links and comments are dropped when pages are combined. Digital signatures stop being valid. Pages are turned into images of up to 144 dpi (4 megapixels per page at most). Searchable text, links, bookmarks and fillable forms don't carry over. Check the preview first. Current bookmarks Result page Previous Next Done. The source had forms, links or comments, so the pages were turned into images to keep how they look. Text search and interactive features don't carry over. Merge the images into a PDF Sign PDF Fill in a form Edit PDF Redact data permanently Protect with a password Remove a known password Repair PDF Convert to PDF/A Save the PDF tools for offline use Saving the PDF pages and programs, including OCR languages and the Office add-on (about 110 MB). Your documents are not stored in this cache. The PDF tools are saved for offline use in this browser. Passwords and documents are not in the cache. The browser may clear the cache later to free up space. Saving for offline use didn't work. Check your connection and free space; downloading results still works. Recognise text (OCR) Extract text Convert to Word Extract tables for Excel Convert to PowerPoint Extract images Compare PDF files Convert to PNG or WebP This browser can't save the chosen image format. Choose PNG and try again.Word back to PDFExcel back to PDFPowerPoint back to PDFAdvanced settingsCancelCancelled. You can try again.Start over← Change settings+ Add moreDone: {name} is readyPreviewKeep working on this fileRecognise text on scanned pagesLanguage of the scanned textFind sensitive dataCheck the suggestions and untick anything you want to keep.No sensitive data found.By bookmarksBy textEvery N pagesText that starts a new partPages per partspoji-pdf,potpisi-pdf,zastiti-pdf,pdf-u-jpg,sazmi-pdf,podeli-pdfResize; use the arrow keys for fine adjustmentThe file stays on your device. No sign-up.ImportantClose previewChoose a PDF fileChoose PDF filesSelect all pagesKey sentencesAll PDF toolsChoose another fileYour file stays on your device. No sign-up, no limits.
Converting a PDF to black and white strips out the colour and creates a new copy in which every page is an image. Before printing on a mono printer, you can see whether a chart still makes sense in shades of grey. Text in the result isn't searchable, and the file may even grow. Your colour original isn't changed.
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How it works
Choose one or several PDFs and press “Save PDF”. If you then need a smaller file for email, run the result through Compress PDF and compare sizes.
Worked example
A report has a chart with a red line and a green one. In greyscale the two come out almost the same shade. Before you print 30 copies, go back to the source file and make one of the lines dashed.
Questions people ask
How do I print a PDF in black and white without this tool?
In the print dialog, choose black and white or greyscale. This tool is for when you're sending a mono version to someone, or want to check how it will look first.
Will the file be smaller?
Not necessarily. Pages with vector drawings become images, and the file can get bigger.
Can I search the text in the greyscale copy?
No, each page is an image. Hold on to the original with its text.
Does it save printer ink?
It saves colour ink, since only black is used. Large dark areas still use plenty of black.
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Updated: 13 November 2026