These days we share photos on WhatsApp and social media almost without thinking, but we don't always feel like showing them off. all the information that appears in an imageLicense plates, children's faces, documents, screens… Luckily, on Android there are several very simple ways to pixelate or blur specific parts of a photograph before publishing or sending it.
In this article you will see in detail how you can How to censor areas of a photo on Android step by stepYou can do this from WhatsApp, using specialized apps, or even the gallery on some phones, like Xiaomi devices with MIUI. You'll see options for... pixelate, blur, or even cover with a black box That which you don't want to show, quickly and without complicating your life.
Why it's worth pixelating parts of your photos on Android
Before we get into the details, it's worth remembering that every time you upload an image to the internet you are exposing personal data and details that you may not want to shareIt could be your children's faces, your car's license plate, the interior of your house, or any sensitive text visible in the photo.
Camera and gallery apps don't always include a direct way to blur or pixelate specific elementsAnd often we end up sending the photo as is due to a lack of a clear tool. Not even advanced applications like Google PhotosWith all its artificial intelligence, they currently offer a function dedicated to censor faces or selected areas with one or two taps.
That's why the functions of pixelation integrated into WhatsApp such as dedicated quick editing apps, which focus precisely on that task: to cover up sensitive information in the simplest way possible and without needing to know about image editing.
Pixelate photos directly from WhatsApp on Android
WhatsApp has long included a fairly comprehensive image editor that allows draw, cut out, add text, stickers and also pixelate parts of a photo Just before sending it. This option first arrived on iOS and took a little longer to appear on Android, but now it's available on most phones.
To begin, you only need to have WhatsApp updated to the latest available versionThe pixelation feature is being rolled out gradually, so if you don't see it yet, you may need to wait a few days or update the app from Google Play.
The idea is very simple: you select the photo, open the editor, choose the pixelation tool, and You paint with your finger the exact area you want to hideas if you were using a paintbrush. In a matter of seconds you'll be able to Share the already censored image without leaving WhatsApp.
On Android, accessing this feature is very similar to iOS, although with small changes in the tool's locationThe pencil and options bar work the same, but the pixelation icon is not next to the colors, but in another area of the editor.
When you finish applying the effect to the image, WhatsApp doesn't save an extra copy to your gallery, but instead send the edited photo directly to the chatIf you want to keep it, you'll need to save it from the conversation or use a previously edited copy from another app.
How to manually pixelate a photo in WhatsApp step by step
If you want to censor a photo right before sending it, the process on Android is very straightforward and easy to follow. First, open the chat where you want to share the image and Tap the attach icon to select a photoeither from the camera or from the gallery.
When you choose the photo, WhatsApp takes you to a preview screen where you can add text, crop, rotate, or apply drawings to the imageIn the top right you'll see the classic pencil icon, which is the one that gives access to the drawing tools and, among them, the pixelation tool.
Once you tap the pencil, you'll see the available options at the bottom. On Android, the pixelation tool appears like an icon with small squares which clearly distinguish it from normal colors. It is usually located at the far right of the row of options.
By selecting that tool, any stroke you make with your finger on the photo will become a pixelated area. In other words, you'll be able to painting over faces, license plates, text, or any other delicate parts that you don't want to be clearly visible. It doesn't need to be precise down to the millimeter; the effect covers the entire area you walk through.
Once you have covered the important areas, simply confirm by pressing the button. OK or send in the upper right cornerThe photograph then travels to the chat with the pixels applied, and the recipient will never see the original uncensored version.
Differences between pixelating photos on iOS and Android with WhatsApp
Although the idea is the same in both systems, there are small nuances that are worth understanding to avoid wasting time looking for the tool. In iOS, the option to Pixelated is integrated directly into the color barso you just have to slide to the end of that bar and choose the effect.
On Android, however, the implementation is slightly different: the pixelation button It is placed in the lower right corner of the editorSeparated from the colors, it features an icon that mimics the characteristic square pattern of the mosaic. This makes it very easy to recognize once you know where it is.
In both cases, the flow is similar: you select a photo, enter the editor, tap the pencil and You manually design the area you want to censorThe gesture you make with your finger is the same one you would use to draw, only the stroke becomes a block of pixels.
One thing to keep in mind is that the pixelation level is fixed in the WhatsApp editor: you can't choose between different mosaic intensities or degrees of blurIf you're looking for more precise control over how the effect is applied, you'll want to use a companion app.
Even so, for most everyday situations—sharing a family photo, a partial document, or the inside of the car—WhatsApp's native option is sufficient. Quick, practical and more than enough to protect your privacy a little without resorting to advanced tools.
Specialized apps for blurring and pixelating faces on Android
When you need to do this type of editing frequently, it's best to rely on applications that focus exclusively on detect and censor faces or other sensitive areasOne of the most representative is a free app whose purpose is, literally, blur or pixelate faces automatically.
These types of apps are characterized by their simplicity: no complex artistic filters or dozens of tools. Their goal is to be a kind of “Quick button” to erase faces or private data In just a few steps. Open the photo, let it detect the faces, and choose how you want to censor them.
Most of these apps work similarly: when you upload an image from the gallery, automatically recognize faces that appear in it and are displayed as thumbnails below the main photo. From there, you can tap each face to change the type of censorship.
They usually offer several effects available for each zone: strong pixelation, soft pixelation, blur of varying intensity and even the option of covering the face with a completely opaque black box for total concealment.
Once you are satisfied with the result, all that remains is for you to do something else. Save the processed image to your galleryFrom there you can share it on any social network, attach it to an email, or send it via WhatsApp already censored, without needing to edit it again in other apps.
How do "Blurred Faces" apps work on Android?
Apps like "Blurred Face" or similar have gained popularity because they solve a very specific problem: Selectively hide faces in a photo in less than a minuteThe first thing you do is open the app and choose an image from your gallery; you don't need to create an account or configure anything complicated.
When you upload the photo, the app analyzes its content and, if it detects faces, it shows you a preview of each face found in a strip just below the main image. This way you can quickly identify who's who without constantly zooming in.
By tapping on each of those faces you can alternate cyclically between different types of visual censorshipFor example, two levels of pixelation (one finer and one coarser), two blur intensities, and the classic totally opaque black box.
This way of working is very convenient when you have group photos, as you can hide only certain people and leave others visibleSomething that would take considerably more time and require much more precision with your fingers using the manual WhatsApp editor.
Once you've finished adjusting the faces you want to censor, press the save button and the app will generate a new copy of the image with the applied modificationsFrom there, you can share it wherever you want without worrying about processing it again.
What if the app doesn't detect faces properly or you want to censor another area?
Not all photos make it easy: people might be in profile, out of focus, or too far away, and automatic detection might fail. In these situations, these types of apps usually display a message indicating that No recognizable faces have been found or that the result is unreliable.
Far from being a problem, these tools usually include a manual mode that allows you draw the area you want to cover yourselfYou usually do this by drawing a rectangle or a freeform shape over the area of the image you want to censor.
That box, once selected, allows the same effects as faces: you can apply an intense pixelation, a soft or strong blur, or directly placing a black block to completely conceal it. This way they're not only useful for faces, but also for license plates, screens, documents, or text.
This manual option also comes in handy when in the photo Elements appear that automatic detection does not identify as faces.but that you still want to protect. For example, the postal address on a package, a telephone number on a piece of paper, or any information about your surroundings.
Once the manual area is configured, the process is the same again: You save the edited photo to your mobile phone and you can use it already censored wherever you need it, without having to make additional edits in other applications.
Advantages, limitations, and business model of these apps
One of the reasons these tools have gained popularity is that they are usually free and without too many restrictionsYou can edit as many photos as you want and access all the pixelation and blurring options right from the start.
The usual counterpart is the presence of in-app adsThese ads allow the service to remain free, although they can sometimes be a bit annoying if you use the app frequently or for long periods.
In many cases a relatively inexpensive one-time payment is offered—for example, a few euros for lifetime purchases— to remove ads and, occasionally, unlock a minor additional feature. These are not monthly subscriptions, but a fixed price.
Otherwise, these types of apps usually work quite smoothly: open photo, detect faces, choose effects, save. The interface is designed to be intuitive even for those with no editing experienceprioritizing large buttons and clear steps.
Perhaps the biggest drawback today is that some still don't allow process multiple photos in batches in a single operation. That is, you have to do it one by one, which can get a bit tedious if you want to censor an entire album at once.
Pixelate photos from your Xiaomi gallery with the Mosaic tool
If you have a Xiaomi phone with MIUI, you might not know that the app itself... Gallery includes advanced editing features that go far beyond cropping or rotating images. Among them is a very useful tool for hide, blur, or pixelate specific areas of a photograph.
This option is normally called "Mosaic" within the gallery editor. It works like a paintbrush: you simply choose the style you want to apply (more artistic, more pixelated, blurry, etc.) and paint over the part of the photo you want to censor.
It's especially useful when you want to share a picture of your car and don't want to show the license plate, or if you're uploading a family photo and prefer to keep it private. hide the faces of some members who do not wish to appear on social media.
Furthermore, Xiaomi's gallery Mosaic mode is quite flexible: it not only lets you cover areas with different effects, but also It allows you to undo or delete parts of the mosaic. if you make a mistake or if you think you've covered too much.
This way you can precisely adjust the censored area until the result is to your liking, without fear of ruining the original photo, since the editor normally save a new copy or allow reverting changes if you change your mind later.
Steps to hide areas of a photo using the MIUI gallery
The workflow on Xiaomi devices with MIUI is quite straightforward. To begin, open the app. Gallery and enter the photograph you want to edit.From there, tap on the editing options, which are usually at the bottom of the screen.
Within the editor, you need to look for the mode called "Mosaic" or similar. When you select it, you'll see a kind of brush with different styles or patterns which you can choose to decide how the effect will look on the photo.
Once you've configured the style, drag your finger across the image, right over the area you want to pixelate or blur. As you paint, the mosaic will be applied, allowing you to... hide text, license plates, faces, or any object that interests you.
If you go too far or the result doesn't quite convince you, you can usually use the undo option or even erase specific parts of the mosaic you have drawn, correcting only the necessary areas without having to start from scratch.
When you're satisfied, save the photo; depending on the model and settings, MIUI may overwrite the original image or create an edited copyIt's a good idea to check this beforehand if you want to always keep the uncensored version for security reasons.
Advanced apps like Pixelate: AI, filters, and precise anonymization
In addition to simple tools, there is a whole category of more powerful applications, such as Pixelate and others like it, designed for those looking for very fine control over how the elements of the photo are hidden and they want to take advantage of artificial intelligence features.
These apps allow you to not only pixelate and blur, but also Apply posterization filters, crosshatch patterns, sketch effects, or full black blocks.The idea is to offer various visual forms of censorship, adapted to each user's style or the context in which you will share the image.
One of its strengths is the integration of AI-based facial recognitionThis allows the application to automatically detect all faces in the photo and lets you decide, with a tap, which ones you want to anonymize and which ones you prefer to keep visible.
Many also incorporate systems for detect blocks of text within the image. This allows you to quickly select a paragraph, dialog box, or label and choose whether to leave it legible or hide it with some kind of blur or pixelation.
An additional advantage of these more comprehensive apps is that they usually integrate well with Android's sharing workflow; that is, you can open a photo in Pixelate from any other application. Censor what you need and return it ready to send by courier, mail or social media without too many intermediate steps.
Extra features and ad-free Pro version
Regarding the business model, many of these advanced applications can be used for free, but they show ads during the editing processIf you're going to use them very intensively, this might slow down your workflow a bit.
To fix this, almost all of them offer an upgrade to a Pro version or similar, usually through a one-time payment that removes ads and, in some cases, unlocks additional settings or extra filters for censorship.
This single-license model is often attractive compared to subscriptions because it allows you to pay once and forget about it, keeping the app ad-free forever on your account.
Regarding privacy, these tools are designed precisely to strengthen it: the goal is for you to be able to reliably anonymize your photos before sharing themwhether in professional environments (reports, documentation) or personal environments (networks, WhatsApp groups).
Choosing between a minimalist app, your phone's gallery, or a powerful solution like Pixelate depends on how much control you need, and whether you value the AI-powered automatic detection and how comfortable you want your daily workflow with photos to be.
With all these options at your fingertips, from WhatsApp's built-in editor to MIUI's mosaic features and dedicated AI-powered apps, it's easy to find a way to pixelate photos on Android step by step that best suits you: you can do it on the fly before sending an image, prepare already censored copies in your gallery, or rely on advanced tools to protect faces, texts, and sensitive objects without giving up sharing your moments whenever you want.
