Social media image sizes, checked against your image
Drop an image and see which formats it already suits and what each of the others would crop away. Runs in your browser; your image never leaves your device.
The four that matter
Square 1:1 and portrait 4:5 for feed posts, 9:16 for a story, and 2:3 for a pin. These are the ratios PlanBatch renders, each at 2160 pixels on the short side, which is enough for any of them without producing files nobody needs.
Crops are centred, so plan for it
Every preview here takes the middle of your image, which is what the platforms do too. If the important part of a photo sits near an edge, it is the first thing lost when the ratio changes. Shooting or exporting a little loose gives the crop room to work.
The profile grid is a separate question
An image that works as a post can still be cropped again on your Instagram profile, which renders every thumbnail at 3:4. Once the post ratio is settled, check the thumbnail in the grid crop checker.
Resizing these one at a time?
PlanBatch renders every format it needs from one template, so the same post comes out correctly sized for each platform without anyone cropping anything by hand.
Every format, rendered for you
One template, one spreadsheet, and a correctly sized post for every network you publish to.
More free tools
All free, all no signup, all running in your browser.
Grid crop checker
See exactly what the profile grid keeps of your post since the January 2026 change, and what gets cropped away.
OpenCarousel splitter
Split one wide image into seamless 1:1 or 4:5 carousel slides, entirely in your browser.
OpenCaption length checker
One caption against every network at once, with the exact number of characters to cut.
OpenCommon questions
Which sizes does this check?
The ones PlanBatch renders: square 1:1, portrait 4:5, story 9:16 and pin 2:3, each at 2160 pixels on the short side. The page reads them from the same configuration the renderer uses, so it cannot drift from what the product actually outputs.
How is this different from the grid checker?
The grid checker answers what Instagram's 3:4 profile grid keeps of a post you have already made. This one answers whether an image works as a post at all, and for which platform. Different questions, and most people need both at different moments.
Why 4:5 rather than 1:1 for a feed post?
Portrait takes more vertical space in the feed, so it is the safer default when you have the choice. Square is the safer default when the same image also has to work as a grid tile.
Is my image uploaded anywhere?
No. The image is read and cropped in your browser. Nothing is sent to a server.