Reference
Image size presets
Every size below is built directly into the resizer's preset picker: choose one from the list and both the width and height fields fill in automatically. This page exists so you can see exactly where each number comes from, rather than trusting a number you can't verify. Where a platform publishes its own current spec, that's the source; where a size is a broadly used convention rather than a single platform's rule (an A4 page at a given print resolution, for instance), that's noted instead.
Social media image sizes
Social platforms update their recommended image sizes occasionally, so a number copied from an old blog post can be stale by the time you use it. The figures below reflect each platform's current published guidance at the time this page was written; open the image resizer in another tab to try any of them directly.
| Use | Dimensions | Aspect ratio | Notes |
|---|---|---|---|
| Instagram post | 1080 × 1080 px | 1:1 (square) | Instagram also accepts 1080×1350 (portrait, 4:5) and 1080×566 (landscape, 1.91:1); square is the safest default across the feed and grid view. |
| Instagram / TikTok story | 1080 × 1920 px | 9:16 (vertical) | Full-screen vertical video and image format shared by Instagram Stories, TikTok, and YouTube Shorts cover art. |
| Facebook shared image | 1200 × 630 px | ~1.91:1 | Facebook's own recommended size for link previews and shared photos; also the most widely used Open Graph image size across the web. |
| Facebook cover photo | 820 × 312 px | ~2.63:1 | Displays at different crops on desktop and mobile, so keep the important part of the image centered. |
| X (Twitter) post image | 1600 × 900 px | 16:9 | Displays uncropped in the timeline at this ratio; smaller images are upscaled by the platform, which can soften them. |
| LinkedIn profile banner | 1584 × 396 px | 4:1 | A wide, short strip behind your profile photo; keep text and faces away from the very edges, which can be cropped on some screen sizes. |
| YouTube thumbnail | 1280 × 720 px | 16:9 | YouTube's minimum recommended width is 640px, but 1280×720 is the current recommended size for a sharp result on large displays. |
Documents and print
Print sizes need one extra piece of information beyond width and height in pixels: the resolution, usually expressed as DPI (dots, or more precisely pixels, per inch). See the resizing guide for the full explanation of how DPI and pixel dimensions relate; the presets below assume the print resolution noted in each row.
| Use | Dimensions | Basis |
|---|---|---|
| US passport photo | 600 × 600 px | The US State Department's published passport photo requirement is a 2 by 2 inch square photo; at 300 DPI (a standard print resolution) that works out to exactly 600×600 pixels. |
| A4 print at 300 DPI | 2480 × 3508 px | An A4 page measures 210 by 297 millimetres (8.27 by 11.69 inches); multiplying each side by 300 DPI gives 2480×3508 pixels, a common target for a sharp, professionally printed document or photo. |
Web and general use
These sizes aren't tied to a specific platform's rules; they're common conventions for web design and everyday sharing.
| Use | Dimensions | Notes |
|---|---|---|
| Favicon | 512 × 512 px | A large square source is the safest starting point for a favicon, since browsers and devices generate their own smaller versions (16px, 32px, 180px for Apple touch icons, and so on) from it. |
| HD wallpaper | 1920 × 1080 px | The pixel dimensions of a standard 1080p display, still the most common desktop and laptop screen resolution. |
| 4K wallpaper | 3840 × 2160 px | Exactly double the linear dimensions of 1080p (four times the pixel count), matching a 4K / UHD display. |
Using a preset versus typing your own size
A preset is the faster path whenever you're targeting a known platform requirement: pick it from the list, and both dimensions are set correctly in one step, with no arithmetic required on your end. Typing a custom width and height is the better choice whenever your target doesn't match any of the presets exactly, for example an unusual print size, a specific web layout's image slot, or a file size limit that's easier to hit with a slightly smaller custom size than the nearest preset provides.
The two approaches combine well in practice: start from the preset closest to what you need, then fine-tune from there if the exact target differs slightly. Selecting a preset always sets both width and height directly (not scaled from the original), so if the source photo's aspect ratio doesn't match the preset's ratio, the result is stretched or squashed to fit rather than cropped; see the resizing guide's aspect ratio section for what to do when that matters.
Why these particular sizes, and not others
Platforms occasionally change their recommended dimensions, and any fixed list risks going stale eventually. These particular sizes were chosen because they're the ones people search for and need most often: the core social sharing formats (square and vertical post, wide link preview), the sizes needed for identification documents and print, and the two most common screen/wallpaper resolutions. If a platform updates its guidance after this page was written, the underlying resizer still works for any size you type in manually; only the preset shortcut would need updating to match a new official number. As with every page on this site, none of these dimensions or any photo you resize are sent anywhere; see the privacy policy for the full detail.
Frequently asked questions
Why is the Instagram post size 1080 by 1080 and not something else?
Do I have to use exactly these pixel counts?
Why does the passport photo preset use 600 by 600 instead of inches?
What if my target size isn't in this list?
Will these presets change over time?
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