Banner sizes

Social: Instagram post 1080 × 1080, Instagram portrait 1080 × 1350, Instagram story and Reels cover 1080 × 1920, link preview (Open Graph, Facebook and LinkedIn posts) 1200 × 630, Facebook page cover 820 × 312, X post 1600 × 900, X header 1500 × 500, LinkedIn page banner 1584 × 396, YouTube thumbnail 1280 × 720. Display ads (IAB): medium rectangle 300 × 250, large rectangle 336 × 280, leaderboard 728 × 90, mobile leaderboard 320 × 50, wide skyscraper 160 × 600, half page 300 × 600, billboard 970 × 250. Custom: any size from 16 to 4096 px per side. Platforms change their sizes now and then; check the platform's current guide for anything you publish widely.

Fill scales the image to cover the banner and crops the longer axis around the focus point: the centre by default, or the top, bottom, left or right edge, or any point you set on the preview by clicking it, by moving the ring with the arrow keys (one percent a step, ten with Shift), or with the two sliders for across and down. Whole image scales it to fit inside and fills the rest with the background colour. An SVG is rendered 2048 px wide at its own aspect ratio, from its viewBox or its width and height; an SVG with neither is refused. Downscaling happens in halving steps with high-quality smoothing; upscaling a small source to a large banner will look soft.

One line of white, bold system text centred on a translucent dark band across the top, centre or bottom. The font size follows the banner's shape and shrinks until the line fits; very long text on a small banner becomes small, and on the smallest custom sizes (16 px a side) the band fills the height and the text is squeezed into the width rather than dropped. There is no font choice, colour choice or second line; for real typesetting use a design tool and export the result here.

PNG is lossless, keeps sharp edges and text, and every platform accepts it. With Fill, a PNG keeps the transparent areas of your image transparent; with Whole image, the bands and any transparent areas take the background colour, so the file is fully opaque. JPEG is much smaller for photographs; pick a quality from 60 to 95 percent (85 is a good default). JPEG has no transparency, so transparent areas always take the background colour, and a headline on a JPEG shows slight compression fringes at low quality.

No. The output is the exact pixel size; it does not warn about a platform's maximum file size, profile-picture overlap on covers, or text-to-image ratios for ads.

No. The page loads a small script into your browser and every operation runs on your device. You can check this yourself in the browser's network panel: after the page has loaded there are no upload requests. Closing the tab discards the file.

No. These basic tools are free, have no limits set by us and store nothing on our servers. The practical limit is your device's memory for very large files.

Nothing you open or type. While the tab is open, the tool pages keep a short list of the steps taken in it, in the tab's session storage: the step (page opened, started, succeeded, first success, used again or failed), the tool's name, the time, how many files were used and, for a failure, an error code; never a file name, the contents of a file or your text. It holds at most the latest 200 steps, and the browser deletes it when the tab closes. The page never sends it. Where a Report a problem button is shown, you can attach the last 20 steps to your report; nothing is attached unless you tick that box. In local storage the page keeps only choices you made: a Light or Dark theme until you choose System again, the language you picked with the EN / 中文 switch if it differs from your browser's language, and this tool in your recently used list if you switched that list on at the tools page.