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We live with screens everywhere — on commutes, at cafés, in open-plan offices and at the kitchen table. A privacy filter is a simple, inexpensive way to keep prying eyes from seeing what’s on your laptop, tablet or monitor. Beyond protecting sensitive information, these thin films cut glare, reduce reflections and can even add a light blue-light shield. If you often work in public or handle confidential documents, a privacy filter is one of those small purchases that pays for itself in peace of mind.
Privacy filters use a microscopic louvers system that narrows the viewing angle of a screen. From directly in front, the display looks normal, but from about 30 to 60 degrees off-axis the image darkens or disappears. Think of it like Venetian blinds for your display — the content is clear when you’re looking straight on, but sideways glances see only a darkened surface. The same technology comes with variations such as one-way or two-way privacy and added anti-glare or blue-light filtering layers.
Not all privacy filters are the same. Some attach with a removable frame, others stick on with micro-adhesive, and a few are tempered-glass solutions for extra durability. There are one-way privacy filters that prevent side views from left and right, and two-way versions that block view from top and bottom too — ideal for shared workstations. Choose based on your device type (laptop, monitor, tablet or phone), whether you need touch sensitivity preserved, and how often you’ll remove or reapply the filter.
Laptop privacy filters are sized by diagonal screen measurement in inches, with common sizes like 13.3 in, 15.6 in and 17.3 in. They’re built to match the display area, not the outer bezel, so accurate measuring in inches matters. For frequent travelers, look for a thin, adhesive-free model that slips into the bezel or mounts with a magnetic frame.
External monitors come in many sizes from around 19 in up to 34 in or more. For widescreen displays, make sure the filter matches the aspect ratio — 16:9 is common. Frameless stick-on filters give a seamless look but may be harder to remove without residue; framed pop-on filters can be adjusted and cleaned more easily.
Tablets and phones often need touch-compatible privacy films. These are usually thinner and use micro-adhesive so touch response and camera clarity are preserved. If you use a stylus, check that the film won’t interfere with precision. Screen size is measured in inches diagonally for tablets as well, so pick the matching size for a snug fit.
When comparing options, focus on five things: the viewing privacy angle, screen size compatibility in inches, attachment type, anti-glare or blue-light properties, and touch or pen compatibility. A wider privacy angle number (meaning a narrower actual viewing range) gives better confidentiality, but can sometimes dim the screen. Anti-glare coatings reduce reflections outdoors, while blue-light filters lower eye strain for long sessions.
Manufacturers list privacy effectiveness in degrees. A filter that blocks visibility beyond 30 degrees gives stronger privacy than one that only limits view past 60 degrees. If you often work in crowded spaces, aim for a filter rated for tighter viewing angles. Remember, stronger privacy can slightly reduce brightness straight-on, so you may need to bump up screen brightness.
Frames often clip onto a laptop or monitor and allow quick removal. Adhesive filters are stick-on and offer a seamless look but can be fiddly to remove and reapply. Magnetic options are neat if your device supports a magnetic bezel. Consider how often you’ll transfer the filter between devices and choose an attachment method that matches your routine.
Some filters combine privacy with anti-glare or blue-light reduction. Anti-glare is helpful outdoors or under strong office lights, and blue-light filters can ease eye strain during long work sessions. If you already use blue-light software, you might prefer privacy-only filters to avoid double filtering that noticeably alters color accuracy.
There are several reliable retailers in the UK where you can buy privacy filters, each with its strengths. Below are popular options and what they typically offer, along with tips on when to choose each one. Prices vary by brand and size, so check screen size in inches before you buy.
Amazon carries a vast selection of privacy filters from budget films to branded premium options. You can filter by screen size in inches, read hundreds of user reviews and find third-party sellers offering custom-cut options. Amazon is great if you want variety and fast search filters to match a 13.3 in or 15.6 in laptop quickly.
Currys stocks branded laptop accessories and often carries privacy filters from household electronics suppliers. It’s a good place to try a branded filter from 3M or Targus in person if you visit a store, but you’ll also find options listed online by diagonal inches and device compatibility. Choose Currys if you want well-known brands and straightforward model matching.
John Lewis offers a curated selection of tech accessories and tends to stock higher-quality brands. Their filters are usually aimed at customers who value design and durability. If you prefer a better finish and are looking for a framed or branded protective filter, John Lewis is a solid place to check.
Argos is useful for budget-conscious shoppers who need a quick match by screen size in inches. They often stock basic privacy films suitable for casual users. Argos can be a good choice when you want an affordable privacy solution without advanced features like blue-light reduction or tempered glass protection.
AO.com and Ebuyer are specialist electronics retailers that list filters alongside laptops and monitors. They provide detailed product descriptions so you can match filter inch size and aspect ratio easily. If you’re buying a new monitor and want to add a matching privacy filter at checkout, these sites are convenient.
Scan and independent specialist computer retailers often offer niche privacy filters and can source custom sizes for uncommon monitors. If you have an ultrawide 34 in display or a less-common size, specialists are more likely to supply an exact-match filter made to the diagonal inch measurement you need.
Office suppliers stock privacy filters aimed at workplace buyers, often with bulk discounts for multiple units. If you’re buying several 24 in monitors for an office, these shops and business-focused resellers can help match sizes and provide bulk pricing. They also stock clip-on frame options popular in corporate settings.
Get the correct size by measuring the display diagonally from one corner of the visible screen to the opposite corner in inches. Do not measure the outer bezel — privacy filters are made to the active display area. Common laptop sizes include 13.3 in, 14 in, 15.6 in and 17.3 in; monitors typically start around 19 in and go up to 32 in or larger. If your screen is an odd size, look for custom-cut or universal frames sold by specialist retailers.
Use a tape measure in inches and make sure you measure only the viewable screen. If your device has rounded corners, measure the widest diagonal point. For widescreens, check the aspect ratio: many filters are designed for 16:9 displays, so a 27 in 16:9 filter won’t necessarily fit a 27 in 21:9 ultrawide monitor.
Installing a privacy filter is usually straightforward, but the method depends on the type. Frame models clip on in seconds, adhesive films require careful alignment, and magnetic filters snap into place if the device supports magnets. Clean filters with a microfiber cloth and a small amount of screen-safe cleaner — avoid household solvents. Proper care keeps the louvers working and reduces scratches that could compromise privacy.
For adhesive films: clean the screen, peel backing in stages, align the film by inches and press out bubbles with a soft card. For clip-on frames: align the frame, clip each side evenly, and check the view angle in inches to confirm full coverage. For magnetic or slide-in frames: position the frame and ensure the magnet or rail secures the filter without gaps. Always follow the manufacturer’s instructions for best results.
Use a soft microfiber cloth and a small amount of distilled-water-based cleaner or a solution formulated for screens. Avoid abrasive materials and pressure that could damage the louvers. If a filter develops deep scratches or peeling, replacing it is typically more cost-effective than attempting repairs.
Several brands dominate the privacy-filter market. 3M is well-known for quality and optical clarity, Ocushield focuses on anti-blue-light and medical-grade protection, Targus and Kensington make business-friendly clip-on frames, and Fellowes offers a range of framed and stick-on options. Each brand lists compatible diagonal inch sizes clearly, so match the inch measurement to your device for a correct fit.
Budget privacy films are great for casual use — they’re inexpensive and easy to replace. Premium filters cost more but offer better optical clarity straight-on, stronger privacy angles, dual-function anti-glare or blue-light protection, and durable tempered-glass options that resist scratches. If you handle highly sensitive data or use your device outdoors often, investing in a premium filter aligned to your device’s inch size makes sense.
Businesses often buy privacy filters in bulk for open-plan offices and hot-desking setups. Office suppliers and specialist resellers provide business pricing for multiple units and can recommend framed or adhesive systems depending on whether monitors are shared. For large deployments, measure monitor diagonal inches carefully and standardize on an attachment method to simplify installation and maintenance.
Before checkout, confirm the screen diagonal in inches, choose the preferred attachment method, decide whether you need touch compatibility, and pick any extras like anti-glare or blue-light reduction. Compare offers across retailers like Amazon UK, Currys, John Lewis, Argos, AO.com, Ebuyer and specialist shops to find the best balance of features and price for your inch-sized device.
Privacy filters are a small investment that keeps your work private, simplifies on-the-go computing and lowers glare. Whether you pick a simple 13.3 in laptop film for commuting or a premium 27 in monitor filter for the office, matching the diagonal measurement in inches and choosing the right attachment type are the most important steps to success.
Conclusion: Protecting your screen is practical and affordable — measure in inches, choose the right style, and pick a trusted retailer to buy from.
| £ 81,70 |
| 3m Privacy Filter For 27in Monitor 16 9 Pf270w9b | £ 110,65 |
