Best Image Sizes for Squarespace for 2025
Let’s talk about images on your Squarespace site—not in a fussy, pixel-perfect way, but in a real-world, “how do I make this look good and still be able to find it later?” kind of way.
If you’ve ever uploaded an image and it looked blurry, too big, or weirdly cropped, you’re not alone. And if you’ve ever gone back into a Squarespace post to update or replace that image… bless you. Because it’s not always intuitive.
Why This MattersAt Bright Box Image, we’ve worked across many platforms. I started out deep in WordPress—still love its power and flexibility—but with Squarespace 7.1’s Fluid Engine and solid design tools, we’ve shifted a lot of our creative builds there.
It’s a great option for small businesses, solo founders, and personal brands who need something beautiful, functional, and doable—without needing a full dev team on speed dial.
And here’s the thing: visuals matter. Your site isn’t just a portfolio—it’s often your first impression. Crisp, intentional images can help someone connect with your work, fast.
Our Go-To Squarespace Image Sizes
To keep things looking good across modern devices without slowing your site down:
✅ Banner/Hero Images: ~2500px wide
✅ Blog/Body Content: ~1500px wide
✅ Thumbnails/Products: 800–1000px wide
✅ JPG for photos, PNG for transparency
✅ 72 DPI for web (don’t use print resolution—it’ll bog things down fast)
These aren’t hard-and-fast rules, but they’ve worked well across dozens of our projects and help avoid that all-too-common Squarespace “why is my image blurry?” moment or the “it’s taking forever to load!”.
Future-Proofing Your Files
But, here’s our big you will thank me later tip of the day and the thing we always recommend to clients:
organize your images before uploading.
Squarespace doesn’t have a traditional media library (unlike WordPress), so once an image is in a post or gallery, it can be tricky to find it again. That’s why we say:
✅ Save your original files in folders
✅ Label clearly with descriptions (this can help with SEO) (e.g. ABC-car-wash-santa-monica-customer-favorite-cover.jpg)
✅ Use cloud storage like Google Drive or Dropbox so you can share with team members and use for multiple content
✅ Group images by page, blog, or project
✅ Revisit key visuals every few years as screen quality improves
Why? Because what looked great three years ago might feel pixelated now.
The internet ages. Fast. And when it comes to visual content, keeping things sharp is an easy refresh—if you’ve planned ahead.
✅ WebP = Next-Gen JPG/PNG
A newer format that gives smaller file sizes with better quality than JPG or PNG.
Great for: Photos, thumbnails, blog graphics—basically anything you’d normally save as JPG or PNG.
BUT: Squarespace 7.1 automatically converts many uploaded JPG/PNG files to WebP behind the scenes.
👉 So you don’t need to manually convert unless you’re being ultra-technical or your site is on a custom setup.
🔧 If you want to go full pro mode: You can upload WebP images directly, but make sure to test them—some older browsers or email clients may not display them correctly.
✅ SVG = For Crisp Icons & Logos
SVG stands for Scalable Vector Graphics.
Think: logos, line art, icons—anything that should stay razor-sharp no matter the screen size.Super lightweight, fully scalable, and can be styled with code (OMG brand colors Yes!).
BUT: Squarespace does not support uploading SVG files directly for security reasons.
👉 Workaround: If you’re comfy with code, you can embed SVGs manually or use a developer plugin—but for most users, upload your logo in high-res PNG instead.
Save this in your notes! 👇 Bright Box Guidelines
✅ Banner: ~2500px wide
✅ Blog: ~1500px wide
✅ Thumbnails: 800–1000px wide
✅ Use JPG unless transparency is needed
✅ Organize before uploading (and label clearly!)
✅ Keep originals in a safe cloud folder
✅ Plan to revisit visuals every few years
Finally….the last step or Do I really Have to Resize My Images?Technically, Squarespace does auto-optimize your images after upload. That’s part of what makes it so appealing for small and solo brands—it handles a lot under the hood. But here’s the deal:
If your original image is huge, like straight-out-of-camera-at-6000px-huge, you’re making Squarespace work overtime—and you risk a slower load time on first view.
💡 Our tip: Get in the habit of resizing and compressing before you upload. It’s one of those small things that keeps your site lean, fast, and friendly to mobile visitors.
✅ Free Online Compression Tools
These are drag-and-drop simple—great for batch resizing and web compression:
TinyPNG – Also handles JPGs! Fast, easy, and effective
Squoosh – Super customizable, by Google
ImageOptim – For Mac users who want full control
🖥 Desktop Tools for Pros (Mac + PC)
Mac:
Preview (built-in) – Resize and export as JPG
ImageOptim – Lossless compression, great for photographers
Affinity Photo – Full control over export settings
PC:
IrfanView – Lightweight, super fast, great for batch resizing
RIOT – Advanced compression without losing too much quality
Photoshop – Export > Save for Web > Adjust quality/size manually
Getting into this habit now makes it so much easier when you revisit your site later. Think of it as future-proofing your brand one upload at a time.
Need help sorting it all? We do that.At Bright Box Image, we act as your fractional marketing support—helping you build, evolve, or clean up your brand across web, social, video, content, and strategy.
Whether you're launching something new or just need a refresh, we make the process feel smart, collaborative, and doable.
