360 photo viewer that also straightens crooked photos
Open a 360 photo and look around it right here, in your browser. If the horizon is crooked, straighten it automatically or with the sliders, then download it at full resolution with its 360 metadata, ready for your virtual tour.
Your photo never leaves your device: it is opened and processed in this page, and nothing is uploaded.
Drop a 360 photo here
or
JPEG, PNG or WebP, in the 2:1 format 360 cameras and apps export (equirectangular). Up to 16384 x 8192.
Why 360 photos come out crooked
A 360 photo is level when the camera stood perfectly upright. A tilt of two or three degrees is enough to make walls lean and the horizon rise on one side and drop on the other as you look around. It usually comes from one of these:
- The tripod was not level: one leg shorter, a slope, a thick rug, or a head that was not tightened.
- The camera or phone app joined the photos with the wrong idea of where up is. Motion sensors drift a little while the camera moves, and the stitched photo inherits the error.
- The camera was held at an angle on a stick or by hand, so the whole sphere is turned.
How the tool straightens it
Rooms are full of vertical lines: door frames, wall corners, the sides of furniture. The tool looks at eight views around the horizon of your photo, finds those lines and works out which way is truly up, then turns the whole sphere so that up is straight up again. Nothing is cropped or stretched: every pixel is moved, at the photo's full resolution. If the photo has no clear vertical lines (a garden, a beach) or is tilted by more than about 10 degrees, use the sliders instead.
How to avoid it next time
- Level the tripod before each room: a bubble level on the tripod head, or the level in your camera's app if it shows one.
- Turn on the horizon correction in your 360 camera's app if it has one (some cameras call it zenith or top and bottom correction).
- On a stick or monopod, keep it upright and let the camera hang straight; do not lean it towards the room.
- Check the first room before you shoot the rest of the property: a tilt in one room usually means every room.
How to check a photo before you publish it
- Open it in the viewer above and look straight ahead with the grid on.
- Find a door frame or a wall corner near you and one across the room: both should run along the grid lines.
- Turn all the way round: the horizon line should stay on the windows and furniture at the same height, not climb on one side.
- Look down: a level photo has the tripod, or the floor patch covering it, centred under you.
Questions
Is my photo uploaded?
No. The photo is opened, shown and processed in this page, on your device. It is not sent to Vistura or anywhere else, and nothing is kept after you close the page.
Which files work?
JPEG, PNG and WebP photos in the 2:1 equirectangular format that 360 cameras and apps export, up to 16384 x 8192. Cube maps, HEIC files and panoramas that are not 2:1 are not supported yet. The tool treats every 2:1 photo as a full 360 photo, so if a flat or cropped picture looks bent in the viewer, do not download it as 360. The download is always a JPEG.
Why does Facebook not show my photo as 360?
Google documents a small piece of metadata inside the file (GPano XMP) that marks a photo as 360 for its products, and most 360 viewers and tour software look for it too (Google Maps also needs a compass heading, which this file does not carry). Facebook's help says photos from 360 cameras, Photo Sphere apps and stitching software are turned into 360 photos automatically when you share them from the Facebook app for iPhone or Android. It does not say what in the file it reads; the Photo Sphere apps it lists write this same metadata. Some editors and apps remove it when they save. The photo you download here always includes it, whether or not you straighten it.
Does the straight photo keep its quality?
It keeps the full resolution and is saved as a high-quality JPEG. The original's EXIF data and GPS location are not copied into the new file.
Is it really free?
Yes: no account, no email, no watermark and no limit on how many photos you straighten.
Turn this photo into a virtual tour
Add a 360 photo of each room to Vistura, connect the rooms and share one link with buyers. The free plan has 3 active tours, with Vistura branding.