📱 Social Media Image Resizer

Last updated: May 6, 2026

📱 Social Media Image Resizer

Resize to exact platform dimensions — runs entirely in your browser, nothing uploaded.

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Click to choose an image, or drag & drop
JPG, PNG, WEBP, GIF — processed locally
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or enter custom dimensions
Higher = larger file; PNG ignores this.
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Why Your Social Media Images Are Being Cropped Wrong — And How to Fix It Once and For All

You spend twenty minutes editing a photo in Lightroom. The colors are perfect, the composition is tight, your subject is dead-center. Then you upload it to Instagram and the platform chops off the face. You post a company announcement on LinkedIn and the banner image looks like it was designed for a postage stamp. Sound familiar?

The problem is almost never the image quality. It's the dimensions. Every social platform has its own rigid, often counter-intuitive size requirements, and they update them just frequently enough to keep you guessing. This guide breaks down exactly what those dimensions are in 2025, why they differ, and how to get them right the first time.

1. Instagram: The Platform That Changed How We Think About Aspect Ratios

Instagram launched as a square-only platform, which is why 1080 × 1080 pixels is burned into the memory of every social media manager alive. But Instagram hasn't been square-only since 2015. Today you have three main aspect ratios to choose from:

  • Square (1:1) — 1080 × 1080 px: Still the safest bet for grid consistency. Works in feed, Explore, and Reels covers without any cropping.
  • Portrait (4:5) — 1080 × 1350 px: Takes up the most vertical screen real estate in the feed, which means more eye contact time before a user scrolls. Studies consistently show portrait posts get higher engagement.
  • Landscape (1.91:1) — 1080 × 566 px: Use this sparingly. It shows the least of your image in the feed and gets the smallest "footprint" on mobile.
  • Stories and Reels (9:16) — 1080 × 1920 px: Full-screen vertical. If you design a Reel cover at 1080 × 1080 and it goes vertical in playback, your subject will be cropped. Always design native vertical for Reels.

Profile photos are displayed at 110 × 110 px on mobile but stored at 320 × 320 px. Always upload at 320 × 320 or larger — Instagram compresses down, never up.

2. Facebook: More Surface Area, More Confusing Specs

Facebook has more image placement types than any other major platform, which is where the confusion starts. The feed, the cover photo, the event banner, and ads all have different rules.

  • Feed Photo — 1200 × 630 px: The standard shared link preview and photo post size. Facebook renders this at 500 px wide on desktop and about 470 px on mobile, but always upload at full resolution.
  • Cover Photo — 820 × 312 px (desktop), 640 × 360 px (mobile): Facebook scales the cover to fit both. The safe zone for text and logos is the center 820 × 312 px area. Anything near the edges may be cropped on mobile.
  • Stories — 1080 × 1920 px: Same as Instagram Stories since the platforms share infrastructure.
  • Single Image Ad — 1200 × 628 px: Facebook recommends keeping text under 20% of the image area for ads to avoid reduced reach. This is still true in 2025 even though the hard 20% rule was relaxed.

3. YouTube: Thumbnails Are Their Own Science

YouTube is the one platform where a single image — the thumbnail — directly controls your revenue. A/B tests across thousands of channels consistently show that custom thumbnails outperform auto-generated ones by 30% to 50% in click-through rate.

  • Thumbnail — 1280 × 720 px (16:9): The non-negotiable standard. YouTube suggests keeping file size under 2 MB. Use high-contrast colors, large readable text, and faces with expressive reactions.
  • Channel Art — 2560 × 1440 px: This is the tricky one. YouTube displays the channel banner at wildly different crops depending on device. TV gets the full 2560 × 1440 px. Desktop crops to roughly 2560 × 423 px. Mobile is even tighter at 1546 × 423 px. The safe zone where text won't be cut off on any device is the central 1546 × 423 px strip.
  • YouTube Shorts Cover — 1080 × 1920 px: Same as Instagram Reels. If your Shorts are getting poor impressions, check that your cover frame shows something compelling in the top two-thirds of the vertical frame.

4. LinkedIn: The Platform Brands Keep Getting Wrong

LinkedIn audiences are smaller but higher-intent. A single well-formatted post to a professional audience can drive more qualified leads than ten Instagram posts. Yet LinkedIn image specs are among the least understood.

  • Personal Feed Post — 1200 × 628 px: LinkedIn renders single images at a 1.91:1 ratio in the feed. Square images (1200 × 1200 px) also work and often feel more editorial.
  • Company Page Cover — 1128 × 191 px: Extremely wide and shallow. This is almost a letterbox banner. Avoid putting important information at the edges — mobile crops aggressively.
  • Article Cover Photo — 1920 × 1080 px: LinkedIn articles (formerly "Pulse") display a full-width hero image. Use the full 16:9 canvas here.
  • Profile Photo — 400 × 400 px minimum: LinkedIn displays profile photos at 200 × 200 px but stores higher resolutions. Upload at least 400 × 400 px.

5. X (Twitter): Simpler Than You Think, With One Big Gotcha

X simplified its image specs significantly after the rebrand. In-stream images display at 16:9 (1600 × 900 px) when a single photo is posted. When you post two images, each crops to 2:1. Four images each crop to 2:1 as well.

The gotcha: Twitter/X auto-crops your image in the timeline preview to fit a fixed-height card. The crop is center-weighted but not always smart. If your subject is near the top or bottom of a tall image, it may be cut in the feed preview — even though clicking the image shows the full version. For important content, center your subject within the middle 60% of the frame.

6. Pinterest: Vertical Is King, And Longer Pins Get More Saves

Pinterest is the one major platform where tall images consistently outperform everything else. The feed is a masonry grid, which means taller images take up more visual space and stop the scroll more effectively.

  • Standard Pin — 1000 × 1500 px (2:3): The sweet spot. Tall enough to dominate the feed, short enough to load fast.
  • Long Pin — 1000 × 2100 px: Pinterest technically allows up to 1:2.1 ratio. Longer than that gets truncated in the feed with a "see more" prompt, which can actually increase clicks if the partial image is intriguing.
  • Story Pin — 1080 × 1920 px: Same as other platform Stories. Pinterest Idea Pins are full-screen vertical experiences.

7. The Three Things Everyone Gets Wrong About Image Resizing

Upscaling a small image to a larger canvas. If you have a 500 × 500 px photo and you resize it to 1080 × 1080 px, you are not adding detail — you are telling the platform to display blurry, pixelated information. Always start from the highest resolution source you have.

Ignoring aspect ratio in favor of absolute pixels. Instagram doesn't care that your image is 1080 px wide if the height is wrong. A 1080 × 1000 px image will be letterboxed by Instagram to fit within the 4:5 aspect ratio. Match both dimensions, not just one.

Using a single image for every platform. A square crop works on Instagram. The same square crop on a LinkedIn company page looks wrong. A YouTube thumbnail at 16:9 posted to Pinterest is almost invisible. Design for the platform, or at minimum resize correctly for each one before uploading.

8. Format Matters Too: JPG vs PNG vs WEBP

For photos, use JPG at 80–90% quality. The file size is dramatically smaller than PNG with almost no visible difference. For graphics with text, logos, or flat color backgrounds, use PNG — JPG compression artifacts are visible on hard edges and text. WEBP offers the best of both worlds but not every platform accepts it natively. When in doubt, JPG for photos, PNG for graphics.

Getting dimensions right is the single highest-leverage thing you can do to improve how your content looks across every platform — before you invest in better cameras, better editing software, or better copy.

FAQ

What is the best image size for Instagram in 2025?
For feed posts, use 1080 × 1080 px (square) or 1080 × 1350 px (portrait 4:5) — portrait gets more screen space and typically higher engagement. For Stories and Reels, use 1080 × 1920 px (9:16 vertical). For profile photos, upload at 320 × 320 px or larger.
Why does Facebook crop my cover photo differently on mobile and desktop?
Facebook displays cover photos at 820 × 312 px on desktop and 640 × 360 px on mobile. The platform crops from the center outward, so edges are cut on smaller screens. Upload at 820 × 312 px and keep all important content — text, logos, faces — within the center 640 × 312 px safe zone.
What YouTube thumbnail size gives the best quality?
Upload thumbnails at 1280 × 720 px (16:9 aspect ratio), JPG or PNG, under 2 MB. This is the maximum resolution YouTube stores and displays. Going larger does not improve quality — YouTube will compress it back down anyway.
Does resizing an image reduce its quality?
Scaling down (reducing size) has minimal quality impact when done correctly with good interpolation. Scaling up (enlarging) always reduces quality because the tool must invent pixel data that was never there. Always start from the largest, highest-resolution version of your image.
Should I use JPG or PNG for social media posts?
Use JPG (at 85–90% quality) for photographs — smaller file size with excellent visual quality. Use PNG for graphics, logos, infographics, or any image with text and hard edges where JPG compression artifacts would be visible. Most social platforms accept both; Instagram and Facebook recompress on upload regardless.
What is the difference between Crop & Fill, Letterbox, and Stretch modes?
Crop & Fill scales the image so it covers the entire target canvas, then crops the overflow — nothing is distorted but edges may be cut. Letterbox fits the entire image inside the canvas and adds white bars to fill the remaining space — nothing is cropped. Stretch forces the image to exactly fit the target dimensions, which can distort proportions. For most social media use, Crop & Fill gives the cleanest result.