Explainer · Published October 16, 2026 · 8 min read
Why Some Websites Blur or Block Screenshots, and What Actually Works
Quick answer
If you are trying to screenshot a website that blurs or won't let you, the cause is rarely your tool. A normal web page cannot stop your operating system from taking a screenshot. When a capture comes out black, blurred or refused, one of five things is happening: DRM-protected video, an app or browser window marked as secure (common on Android), a script that blurs the page when it loses focus, a paywall that never sent the full text, or a desktop app that excludes its window from capture. Each has a different cause and a different legitimate option.
Symptom decoder
Find the row that matches what you see, then jump to the explanation.
| What the screenshot shows | Most likely cause |
|---|---|
| Page is fine, the video area is black | DRM-protected video |
| Phone says the screenshot is blocked by security policy | Secure window flag |
| Whole page blurred or covered only in the screenshot | Blur-on-focus script |
| Text below a paragraph is blurred on screen too | Paywall or teaser |
| One app window is black in a full-screen capture | Window excluded from capture |
1Black video on streaming sites
| You see | The page, the controls and the subtitles are captured, but the video itself is a black rectangle. |
|---|---|
| What happens | Streaming services encrypt video with DRM systems such as Widevine. The browser decrypts and draws the frames through a protected path, often with hardware decoding, and screen capture is not given access to it. |
| What you can do | Use the service's own share or clip features where they exist, or official press stills. Getting around DRM is restricted by law in many countries and is not covered here. |
2"Can't take screenshot due to security policy"
| You see | Android shows a message such as "Can't take screenshot due to security policy", or the screenshot is black. |
|---|---|
| What happens | The app marked its window with Android's FLAG_SECURE. Banking apps, password managers, some messengers and Chrome's Incognito tabs on Android use it, and the system then excludes the window from screenshots and screen recordings. Android 14 also added an API that lets apps detect screenshots of their screens. |
| What you can do | Open the same page in a normal (non-incognito) tab if it is a public page, or use the app's own export or share feature. For your own banking or account data, the provider's statement download is the reliable route. |
3The page blurs the moment you try
| You see | The page looks normal, but your screenshot shows it blurred, covered by a notice, or blank. |
|---|---|
| What happens | The site listens for the browser telling it that the tab lost focus or became hidden (the blur and visibilitychange events), and some also react to the Print Screen key. Opening a snipping tool moves focus away, the script applies a CSS blur, and the tool captures the blurred state. Exam, proctoring and some content sites do this on purpose. |
| What you can do | Treat it as the site's policy. If you need the content for a legitimate reason (a receipt, a support ticket, an accessibility need), ask the site for an export or a PDF version, or use the browser's Print to PDF where the site allows it. |
4Blurred text behind a paywall
| You see | The first paragraphs are readable, the rest is blurred or faded, even on screen. |
|---|---|
| What happens | Most paywalls send only a teaser. The blurred part is often placeholder text or nothing at all, styled to look like an article. No screenshot tool can capture text that was never delivered to your browser. |
| What you can do | Subscribe, use a gift or share link from a subscriber, or check whether your library provides access. Archive copies are only a legitimate option where the publisher allows them. |
5One desktop app shows up black
| You see | In a full-screen capture or a screen share, everything is visible except one window. |
|---|---|
| What happens | Windows lets apps exclude a window from capture with SetWindowDisplayAffinity (WDA_EXCLUDEFROMCAPTURE), and macOS apps can set a window's sharingType to keep it out of captures. Password managers, DRM players and meeting tools with content protection use it. Company devices may also have data loss prevention software that blocks capture. |
| What you can do | This is a deliberate protection, often required by your employer. Ask the app owner or IT for an approved way to share the information. |
Myth vs reality
| Myth | Reality |
|---|---|
| "This website knows I took a screenshot." | On a computer, a web page cannot see OS screenshots. It can only see focus changes and some key presses. Native mobile apps are different: iOS notifies apps after a screenshot, and Android 14 added a similar callback. |
| "Disabling right-click stops screenshots." | It only blocks the context menu. Keyboard shortcuts and screenshot tools are unaffected. |
| "A blurred paywall has the text underneath." | Usually it does not. The full article is sent only to subscribers. |
| "Black video means my screenshot tool is broken." | It is DRM working as intended. The rest of the page captures fine. |
| "Sites can block screenshots completely." | Websites cannot. Apps can mark their windows as secure on Android and exclude them on Windows and macOS. |
What actually works (legitimately)
- For ordinary pages that just won't fit: use a full-page capture instead of stitching (the full page screenshot guide explains why stitching breaks). Chrome has one built in, see the hidden DevTools command.
- For receipts, statements and bookings: use the site's download or email option. It is a better record than an image.
- For articles: Print to PDF or reader mode, where the publisher allows it, keeps text searchable.
- For evidence (disputes, compliance): a timestamped capture with the URL in the record is worth more than a cropped image. Services that archive pages with a timestamp serve that purpose better than a phone screenshot.
- For DRM video and secure apps: use the official share, clip or export features. Circumventing the protection is not a workaround we recommend or describe.
If it is your own site: capture it cleanly for QA
Teams sometimes ship blur overlays, consent walls or "focus lost" screens and then cannot take clean screenshots of their own product for docs, tests or app store listings. Since you own the page, the clean way is to switch those layers off for the capture:
screenshot apiA better long-term fix is a test flag in the app (for example a query parameter only honored on staging) that disables the overlays, so every tool you use gets the clean state.
Takeaways
- Websites cannot disable screenshots; apps and DRM can.
- Blur in the image but not on screen usually means a focus or key-press script.
- Blur on screen too usually means the content was never sent.
- Use official exports for records, and capture your own sites with overlays turned off.
Sources
FAQ
Why do I get a black screen when I screenshot Netflix or another streaming site?
The video is protected by DRM. The browser decrypts and draws it through a protected path that screen capture tools are not allowed to read, so the video area comes out black while the rest of the page captures normally.
Can a website stop me from taking a screenshot on my computer?
A web page cannot disable your operating system's screenshot tools. It can only react to signals it sees, such as the tab losing focus or certain key presses, and blur or hide its own content in response.
What does "can't take screenshot due to security policy" mean?
On Android, an app or a browser mode such as Chrome Incognito has marked its window as secure. The system then refuses to include that window in screenshots and screen recordings.
Is it legal to screenshot a website?
Taking a screenshot for personal reference is generally fine, but publishing or reusing it can involve copyright, terms of service and privacy. Bypassing DRM or other access controls is a separate issue and is restricted in many countries.
Why does a page look sharp on screen but blurred in my screenshot?
Usually a script blurs the page when the window loses focus, which happens the moment you open a snipping tool. The site does this on purpose, so ask it for an export or PDF if you need a copy.
Clean screenshots of pages you are allowed to capture
For your own sites, staging, clients and public pages: full-page captures with cookie banners blocked, overlays hidden and the exact viewport you need. The free tier gives you 300 screenshots, no credit card required.