Frame every photo and video. Crop nothing.
Matteur fits any photo or video into any shape - square, portrait, story, wide or print size - with a clean colour border. Your whole picture stays in, saved at full resolution.
Three Steps to a Framed Photo
Pick
Choose a photo or video with your phone's own picker. Matteur only sees what you choose.
Frame
Choose an aspect ratio, then adjust the margin, rounded corners, colour, position and credit - or apply a saved preset.
Save
Save to your gallery at full resolution, ready for Instagram, Reels, stories, prints or anywhere else.
Everything You Need, Nothing You Don't
Every Format
1:1, 4:5, 3:4, 2:3, 9:16, 16:9 and more - square posts, portrait feeds, stories and widescreen. One tap flips any ratio.
Videos Too
Frame videos up to 4 minutes with the same tools. Save in Full HD or at original size up to 4K.
Creator Credit
Add your name or @handle in one of four fonts, with size, bold and colour, and drag it anywhere on the frame.
Print Sizes
4×6, 5×7, 8×10 and 11×14 inches, with margins in mm, a print-quality check and the DPI saved in the file.
Margin & Corners
Slide the margin and corner radius to taste, and choose exactly which corners are rounded.
Full Palette
36 curated colours, a colour wheel, hex codes, and an eyedropper that picks a colour straight from your photo.
Free Positioning
Drag the photo anywhere - off-centre, into the margin or past the edge - or nudge it with the arrow buttons.
Presets
Save your favourite looks, credit included, and apply them in one tap. Export them as a file to back up or move to a new phone.
True to the Original
Photos saved at original resolution, turned the right way up, with location data removed.
Your Photos Stay Yours
Matteur works entirely on your phone. We believe in privacy-first software.
No Internet Access
The app doesn't even ask for internet permission, so nothing can be uploaded.
No Tracking, No Accounts
No analytics, no ads, no sign-up. You are completely anonymous.
Only What You Pick
The system picker shares just the photo or video you choose, not your whole library.
Pro Tips
Questions
Does Matteur crop my photo?
Never. The whole photo always fits inside the frame, and the border fills the rest. You can still drag the photo past the edge on purpose if you want that look.
Will my photo lose quality?
No. Matteur saves photos at their original resolution as a high-quality JPEG. Only extremely large results (over 50 megapixels) are scaled down so phones can handle them. Videos are saved in Full HD or at their original size, up to 4K.
Can I add a border to videos?
Yes. Pick a video the same way you pick a photo and frame it with the same tools: aspect ratio, margin, corners, colour, position and credit. Videos can be up to 4 minutes long. HDR videos are converted to standard colour so they look right everywhere.
Can I use Matteur for prints?
Yes. Choose a print size (4×6, 5×7, 8×10 or 11×14 inches, in either orientation) and set the margin in millimetres. Matteur shows how sharp the print will be at that size, and writes the right DPI into the saved photo.
Is it really free?
Yes. Every feature is free, with no ads, no watermark, no subscription and no account.
Are my photos uploaded anywhere?
No. The app has no internet access at all. Photos and videos are processed on your phone, and location data is removed from saved photos.
Can I move my presets to a new phone?
Yes. Export them as a small file from the Presets tab, send it to your new phone and import it there. You can add them to your existing presets or replace them.
Which phones are supported?
Android phones and iPhones (iOS 15 or later). Matteur is coming soon to Google Play and the App Store.
Something else? Email stackbits.in@gmail.com.
Ready to frame your photos and videos?
Clean borders, every format, full resolution. Free, private and ad-free.