Invert PDF Colors — Dark Mode for Scanned Pages
Turn a bright page into easy-on-the-eyes dark mode — export it as an image, drop it below and invert the colors in one click.
Drop your PDF page image here
or click to browse — you can also paste with Ctrl+V
🔒 Processed entirely in your browser — your image is never uploaded. Downloads also strip GPS and other metadata.
How to invert the colors of a PDF page
- Export the page as an image: most PDF readers can save or export a page as PNG, or simply take a screenshot of it.
- Drop that image above and press Invert All — white paper becomes near-black, text becomes light.
- Download the inverted page and keep it as a dark-mode copy, or replace the original page in your PDF with any PDF editor.
Scanned documents and dark printouts
A scanned page is really a photograph of paper, and photographs can be inverted like any other image. That fixes the two most common scan problems: pages that came out too dark or yellowed to read snap back to legible, and bright white papers stop glaring at you when you read in bed or on a night flight. Old microfilm and photographic negatives of documents work the same way — invert first, read after.
Rescue a scan that came out backwards: black background, white text
Sometimes a scanner or scanning app flips a page by accident: the Negative or Film mode was left on from a previous job, a duplex run scanned the backs before the fronts, or thin paper let light bleed through and the auto-exposure guessed wrong. The result is a page of white text on a black ground, and you do not need to rescan it. Export the bad page as an image, drop it into the tool above, press Invert All, download the light version, and replace the page in your PDF with any PDF editor. For a whole stack of pages, a desktop batch tool such as IrfanView can invert an entire folder of scans in one pass before you rebuild the file. If a flatbed scanner is within reach, rescanning is still the cleaner fix — but for one page inside a 40-page contract, thirty seconds of pixel flipping beats hunting down the machine. As a bonus, the rescued page is light, so printing it costs no extra toner.
Why invert instead of using a reader's dark mode?
PDF reader dark modes often just draw a dark veil over the page, which dims the text along with the background. Inverting the page image itself gives you true light text on a dark ground — what you see in the exported file is exactly what you get in any viewer, on any device, even printed for reference.
Screen filter or a saved file? Three ways to "invert a PDF"
People say "invert a PDF" about three very different things, and picking the wrong one is why so many forum threads about this end in frustration. A screen filter — Acrobat's Replace Document Colors under Preferences → Accessibility, a browser extension, or your operating system's full-screen color flip — changes what your monitor shows and nothing else. No setting is stored in the file: close the app, send the PDF to someone else, or print it, and the page is bright white again, exactly as the long "save a PDF with inverted colors" threads on Adobe's own forums confirm. A server-side converter instead tries to rewrite the color objects inside the document, which can work for plain text pages but often mangles fonts and layout along the way. The third way is the pixel route this page takes: flatten the page to an image, invert the pixels, rebuild. It is permanent, it looks identical in every viewer, and it is the only one of the three that works on a scan.
| What you need | Text-based PDF | Scanned PDF |
|---|---|---|
| A quick look on this screen | Reader dark mode or Replace Document Colors | Any screen filter — or the tool above |
| To save, share or print the flip | Export pages, invert, rebuild | Export pages, invert, rebuild |
Invert PDF colors on Mac, iPhone, iPad, Android and in your browser
Every platform has a built-in way to flip a page for viewing. All of them are display-only — handy for a quick read, gone the moment the app closes, and none of them writes the flip into the file.
Adobe Acrobat (desktop)
Open Preferences → Accessibility and check Replace Document Colors (Edit → Preferences on Windows, the Acrobat menu on macOS). It remaps the document's text and background objects — which is also why it never touches a scanned page, as the decision table above explains.
macOS
System Settings → Accessibility → Display has an invert-colors switch, and the keyboard shortcut Command+Option+Control+8 toggles it anywhere, full screen, in any app — including your PDF reader. The shortcut ships disabled: enable it once under System Settings → Keyboard → Keyboard Shortcuts → Accessibility. Either way it is a view flip only; the file on disk is untouched.
iPhone and iPad
Settings → Accessibility → Display & Text Size lists Classic Invert and Smart Invert. Classic Invert flips everything including photos; Smart Invert tries to spare images and is usually the better pick for reading documents. Add either to Control Center for one-tap access — again, nothing is saved into the file.
Android
There is no system-wide PDF invert, but popular readers cover the need: Xodo has a night mode, and several dedicated PDF viewers ship dark themes designed for reading scanned pages. Night modes are a viewing layer, not a conversion.
Desktop browsers
Chrome and Firefox both have extensions that invert specific pages, and some browser-based PDF viewers offer a dark theme of their own. Fine for reading on this screen — and when the flipped page has to live in the file itself, the tool at the top of this page is the way.
Quality, searchable text and very long documents: the honest trade-offs
What the flip does to your pixels is pure, lossless math — every red, green and blue channel becomes 255 minus itself — so sharpness is decided entirely by the image you export: a 200 DPI page comes back exactly as sharp as it went in. What does change is the page's nature. Once an inverted page is rebuilt into a PDF it is a picture page: the original text layer is gone, so nothing on it can be selected or searched until the file has been through OCR again. Modern OCR engines read white-on-black text perfectly well, so the usual workarounds are simple — OCR the original before you invert, OCR the rebuilt file after, or keep the original as your searchable copy and use the dark version purely for reading. The last honest note is size: a 700-page textbook is hundreds of separate page images, and this tool takes one image up to 30 MB at a time. Flip the chapters you are actually going to read tonight, not the whole book.
More free image tools
Negato started with color inversion and grew into a full local image toolkit. Invert image colors of any format, invert a PNG with transparency preserved, flip a logo to its dark-mode version, or compress images before you re-insert them into a document. The pipeline pairs well with this page: after you invert a rough scan, run it through the pure black and white converter for a crisp cleanup copy, or keep natural tones with the black and white photo converter — all free and processed entirely in your browser.
Frequently asked questions
Can I upload a PDF file directly?
Not yet — the inverter works on pixels, and a PDF is a document format. Export or screenshot the page you need as a PNG or JPG, drop it in above, and you get the same inverted result. Work one page at a time.
Why doesn't Replace Document Colors in Acrobat change my scanned PDF?
Replace Document Colors remaps the text and background objects stored inside a document, and a scanned page has no text objects — it is one flat photograph of paper, so the setting has nothing to change. To flip a scan you have to invert the pixels themselves: export the page as an image, drop it into the tool above, and rebuild the PDF from the result.
Why would I invert a PDF's colors?
Three common reasons: reading bright scanned pages at night without the glare, rescuing scans that came out too dark to read, and keeping a dark-mode copy of a document for your own notes.
How do I get the inverted page back into my PDF?
Insert the downloaded image as a new page or replace the original page in any PDF editor, or print the image to PDF from your operating system. Many people simply keep the inverted copy as a separate dark-mode version.
Is an inverted page easier to read at night?
For most people, yes — and the reason is physical. In a dim room a bright white page works like a small lamp pointed at your face, and its glow bleeds around every letter; light text on a dark ground removes that light source, which is the whole idea behind dark mode. The inversion itself is a true color flip, so the text stays exactly as sharp, and if a scan was faint to begin with the Invert Grayscale mode is worth trying for extra contrast — the grayscale converter tames colored scan noise the same way. One honest caveat: eyes differ, and research on whether dark mode protects your eyes long-term is still unsettled, so trust how your own eyes feel after ten minutes of reading.
Can you OCR or search an inverted PDF page?
Yes — inversion loses no information, and white text on a black ground is still text: modern OCR engines read it without trouble. The catch is format, not legibility: a rebuilt page is a picture, so it carries no selectable text until something runs OCR on it. If you only need the dark version for reading, there is nothing to do; if the flipped file has to be searchable on its own, give it an OCR pass after rebuilding.
Will the inverted page keep its resolution?
Yes. Inversion rewrites colors only — the output keeps the exact pixel dimensions of the image you dropped in, so text stays crisp. For the sharpest result, export the PDF page in the 150–300 DPI range before inverting it — the flip brings back exactly the sharpness you exported.
How do I invert a multi-page PDF?
Export the pages you need as images first — most desktop PDF readers can save or export a page as a PNG or JPG, and a screenshot works for the few that cannot — and mobile readers usually have an export-page option. Then drop each page image here. One image per page keeps the resolution of every page at its best.
Can I invert a scanned document that is already dark?
Yes — that is one of the most common jobs for this page. A dark printout or underexposed scan flips into a bright, readable page in one click, and you can download the result as a light PNG that prints without draining a toner cartridge.
Can I print an inverted page without wasting ink or toner?
Direction matters. Rescuing a scan that came out too dark gives you a light page that prints cheaply — often cleaner on toner than the muddy original. The expensive direction is the other one: flipping a normal white page to dark mode and printing it coats the whole sheet in toner, so keep dark versions on screen and print from the original, or flip the page back to light first.
Is it safe to invert confidential documents here?
Yes — everything runs locally in your browser. The page image is never uploaded to a server, the tool keeps working if you disconnect from the internet after the page loads, and downloads strip GPS and other metadata. Contracts, transcripts and similar documents never leave your device.
Does inverting a page image make text harder to read?
It depends on the source: crisp black-on-white text becomes crisp white-on-black text, which many readers prefer at night. What inversion cannot do is sharpen a blurry scan — if the letters were soft before flipping, they stay soft after. Export pages in the 150–300 DPI range for the cleanest results.
Which export settings should I use in my PDF reader?
Choose PNG over JPG when the reader offers both: PNG keeps sharp text edges without compression fuzz, and this page downloads PNG uploads as lossless PNGs. A resolution of 150–300 DPI is plenty for reading; go higher only if you plan to print.
Invert Image
Turn any picture into a color negative — all colors, single RGB channels or grayscale.
Open the inverter →Invert PNG Colors
Flip a PNG to its negative with the transparent background kept — no black boxes, downloads at full size.
Open the PNG inverter →Invert Logo Colors
Make the dark-mode version of your logo — export as a PNG, flip the colors, keep transparency.
Open the logo inverter →Compress Image
Shrink JPG, PNG and WebP files with a quality slider and live size readout — transparency aware.
Open the compressor →PNG Color Changer
Change the color of a PNG in one click — tolerance you control, transparency kept.
Open the color changer →Rotate Image
Turn a photo 90°, 180° or any custom angle — the canvas expands so nothing is cropped.
Open the rotator →Black & White Converter
Convert any photo to black and white with natural luminance shades — transparency preserved.
Open the B&W converter →Compress PNG to 100KB
Shrink big PNG files toward a 100 KB target in your browser.
Open the PNG compressor →