How to hide private info in a screenshot before you share it (iPhone, Android, Windows, Mac)
Screenshots are the fastest way to show a problem, and the fastest way to share an email address, an order number or a password reset link with the whole internet. Two minutes of cropping and covering fixes that.
What to look for before you share
| Easy to miss | Where it hides |
|---|---|
| Your name and email address | Top corner of web apps, the From line, the account menu, a browser profile picture. |
| Phone number, home address | Delivery details, order pages, contact cards. |
| Order, ticket, booking or account numbers | Often enough to call a company and pretend to be you. |
| Links in the address bar | Reset links, invite links and shared document links work for whoever has them. |
| Codes and keys | One-time codes, API keys, Wi-Fi passwords, a QR code on screen (it can be scanned from the picture; the screenshot redactor's Find QR codes button boxes every readable one for you and re-checks the saved copy). |
| Notifications and tabs | A message preview or a tab title that shows someone else's name. |
| Faces and places | Video-call thumbnails, a photo in the background, a street sign through a window. |
Covering it with the tools you already have
App menus change between versions, so these are the general routes rather than exact button names.
iPhone and iPad
Right after taking the screenshot, tap the small preview to open Markup (or open the screenshot in Photos, tap Edit, then the markup pen). Crop first with the crop handles. To cover text, add a shape (the + button) such as a square, set it to a solid fill and a dark colour, and stretch it over the text; or use the pen (not the highlighter) at its thickest setting until no letters show. Tap Done and save, then share the saved picture.
Android
Most phones show an edit or pencil button on the screenshot preview, and Google Photos has Edit › Markup. Crop first, then use the pen at full thickness, or a shape tool with a fill if your phone's editor has one. Avoid the highlighter, which is see-through. Save as a copy if offered.
Windows
The Snipping Tool (Win+Shift+S, then open the snip) lets you crop, draw and, in recent Windows 11 versions, use Text actions › Quick redact to black out email addresses and phone numbers it finds. Check the result: it only covers what it recognises. Save with Save as to a new file name. Paint can also draw a filled rectangle.
Mac
Click the floating thumbnail after ⌘+Shift+4, or open the screenshot in Preview and show the markup toolbar. Add a rectangle from the shapes menu, set its fill colour to black, and place it over the text. Crop with the selection tool and Tools › Crop. Use File › Export to save a new PNG or JPEG, which flattens the shapes into the picture.
Why not blur?
Blur and pixelation keep a fuzzy average of the letters underneath, and short or predictable text (PINs, codes, emails) can be matched by trying every guess with the same blur. Solid boxes and crops leave nothing behind. The full explanation and a comparison table are in is pixelating or blurring a password safe?
Last check
- Open the saved copy, not the editor.
- Zoom in on each box: flat colour, no edges of letters.
- Look once more around the whole picture for a second copy of the same detail.
- Screenshots normally carry no location, but photos of a screen taken with a camera do; check those with the photo metadata viewer.
Related
Is pixelating or blurring a password safe? · Redact a PDF properly (black boxes that don't hide anything) · Check if a photo shows your location · Why compressed photos get blocky · Try it: pixelate a pretend PIN and watch it get found
Questions
How do I black out text in a screenshot on iPhone?
Open the screenshot in Markup, add a square shape with a solid dark fill over the text (or use the pen at its thickest setting, not the highlighter), then save and share the saved copy.
Can someone undo my markup on a screenshot?
Not if the cover is fully opaque and saved into a new picture. A see-through highlighter can be undone by raising contrast, and in some editors shapes stay separate layers until you export.
What should I hide in a screenshot before posting it?
Names, email addresses, phone numbers, addresses, order or account numbers, anything in the address bar, codes, keys, QR codes, notifications and faces.
Is cropping a screenshot safe?
Yes, when the app saves a new picture. An old bug in some phone and Windows tools kept the cropped-off part in the file; it is fixed in updated versions, and saving as a new file avoids it.
Do screenshots include my location?
Usually not, because they are not taken by the camera. But they show whatever is on screen, which can include a map or an address.
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