PDF Dark Mode

Drag it in or click Select PDF File. It renders in the reader.

Use the render toggle to flip to Inverted for light-on-dark, or stay on True for the original look.

In Settings, adjust Brightness and Contrast and pick a Page Background (white, cream, or dark). Choose Scroll or Page view and set the zoom.

Read comfortably, go fullscreen if you like, or download a dark-mode copy.

Open the PDF, then use the render toggle to switch to Inverted — the page flips to light text on a dark background. Adjust the brightness, contrast, and background in Settings to suit your eyes, and read in scroll or single-page view. Everything runs in your browser, with no upload.

Inverted is true dark mode: it flips the page to light text on a dark background, ideal for text-heavy reading. True keeps the document's original colours. Use Inverted for comfortable night reading of text, and True (with a dark page background) when a document has images you want to keep looking natural.

Yes. Once you've set up the dark view, use the download button to save a dark-mode version of the file. That copy stays dark in any PDF reader and on any device — useful for reading on a tablet or e-reader at night without re-applying settings each time.

Open Settings and use the Brightness and Contrast sliders to make the text crisp without glare. The Page Background option lets you pick clean white, a warm cream/sepia tone that's gentle on the eyes, or full dark. Combine these to find the most comfortable reading setup.

With full Inverted mode, yes — photos get flipped like a negative, since inversion affects everything on the page. For documents with important images or charts, switch to True mode and choose a dark page background, which darkens the surround while leaving the images looking natural.

Reading in dark mode doesn't touch your file — it only changes how it's displayed. If you download a dark-mode copy, that's a separate new file; your original stays exactly as it was on your device. So you can switch back to the normal version anytime.

No. The PDF is rendered entirely in your browser, so it never leaves your device or reaches a server. That matters for private or work documents. You can even disconnect from the internet after the page loads; closing the tab clears the file from memory.

Yes. The tool works in any modern browser on iPhone or Android, which is where a lot of night reading happens. Open the PDF, toggle dark mode, and read — or download the dark copy. Larger documents render faster on a laptop, but reading works smoothly on mobile.

Yes. Reading and saving in dark mode is free, the downloaded copy has no watermark, and there's no account to create. Open a file, set your dark view, and read or download — no paywall.

On phones and laptops with OLED screens, yes — those displays use less power for dark pixels, so a mostly-black page can extend battery life during long reading. On standard LCD screens the battery effect is minimal, but the eye-comfort benefit still applies.

Yes. The reader offers a continuous Scroll view for flowing through a document and a single Page view for focusing on one page at a time. You can also zoom in and out and go fullscreen, all while keeping your dark-mode settings.

Mainly comfort: light text on a dark background reduces glare during night reading and long sessions, which many people find easier on the eyes. It can also save battery on OLED screens. A cream/sepia background is a gentler middle ground if pure dark feels too stark.