Cloudflare vs BunnyCDN vs KeyCDN for Image Delivery: Which One Should You Actually Use in 2026?

BunnyCDN is the right default for most image-heavy sites in 2026 — a flat $9.50/month Optimizer fee plus bandwidth from $0.005/GB beats both Cloudflare's paywalled image tier and KeyCDN's pay-as-you-go pricing for anyone with steady traffic. Cloudflare still wins if security is the actual priority. KeyCDN only makes sense if your traffic is too small or spiky to justify a flat fee. The honest answer isn't "it depends" in the vague sense — it depends on one specific thing: how much of what you're paying for is bandwidth versus protection.

What Each One Actually Costs

The pricing pages make this harder to compare than it should be, because each provider structures its plan around a different assumption about what you need most.

BunnyCDN charges a flat $9.50/month for its image Optimizer, then bandwidth separately starting at $0.005/GB in North America and Europe — some of the cheapest per-gigabyte delivery available anywhere. There's no free tier, but there's also no surprise: you know roughly what a month costs before it happens.

KeyCDN has no flat plan at all. It's pure pay-as-you-go: about $0.04/GB for North America and Europe on the first 10TB, plus $0.40 per 1,000 image processing operations, with a $4/month minimum to keep the account active. That per-gigabyte rate is 8x BunnyCDN's, which only makes sense if your total volume is low enough that the difference in absolute dollars stays small.

Cloudflare gives away CDN caching for free with no bandwidth bill on the free tier — genuinely useful if all you need is basic caching. But image resizing and on-the-fly optimization live behind the Pro plan at $20/month, and the Business tier jumps to $200/month for the features larger sites actually want. You're paying for a much bigger network (250+ points of presence versus BunnyCDN's 40+) and a serious security stack, not primarily for image delivery.

Format Support Is Where It Gets Uneven

Bandwidth pricing is the headline number, but format support decides how much bandwidth you actually use. AVIF typically runs 10-20% smaller than WebP at equivalent visual quality, and that gap compounds across every image on every page load, every day.

Cloudflare supports AVIF conversion. So do Cloudinary, ImageKit, Imgix, Fastly, and Gcore. BunnyCDN and KeyCDN, as of mid-2026, both cap out at WebP for automatic format conversion. That's not a dealbreaker — WebP alone still beats serving raw JPEG or PNG by a wide margin — but if AVIF is part of your performance budget, it quietly removes BunnyCDN and KeyCDN from consideration unless you're willing to generate and host AVIF versions yourself outside the CDN's automatic pipeline.

Feature	Cloudflare	BunnyCDN	KeyCDN
Entry cost	Free tier / $20/mo Pro	$9.50/mo flat Optimizer	$4/mo minimum, pay-as-you-go
Bandwidth (NA/EU)	Included on paid tiers	From $0.005/GB	~$0.04/GB
AVIF support	Yes	No (WebP only)	No (WebP only)
Edge locations	250+	40+	Global, smaller footprint
Strongest at	Security (WAF, DDoS)	Cheap media delivery	Low/spiky traffic

The Actual Recommendation

If you're running a store, a gallery platform, or any site where images are most of the page weight and traffic is reasonably steady month to month, BunnyCDN is the right call. The math is simple: a flat $9.50 plus bandwidth that's a fraction of what Cloudflare charges for the same tier of service adds up to a materially smaller bill at any real scale, and the boring, predictable pricing is a feature, not a limitation.

Cloudflare earns its premium when security is genuinely part of the requirement — a WAF, DDoS protection, bot management, and a larger edge network matter more than saving a few dollars a month if you're a target for abuse or need enterprise-grade uptime guarantees. Paying for Cloudflare purely for image delivery, when BunnyCDN does the delivery job for less, is paying for a feature set you're not using.

KeyCDN is the right tool exactly once: when your traffic is too small or too unpredictable to justify committing to a flat monthly fee, and the pay-as-you-go model genuinely saves you money because most months you're barely using it.

A CDN Isn't a Substitute for Compressing Before Upload

Whichever provider you pick, the CDN is optimizing whatever you feed it. A 12MB source photo run through BunnyCDN's Optimizer or Cloudflare's Polish still costs more in processing and produces a larger delivered file than a properly compressed 400KB source would. Paid image CDNs are genuinely good at responsive resizing, format negotiation per browser, and edge caching — they are not good at fixing an upload pipeline that never compresses anything in the first place.

The right setup is both: compress and resize images to sensible targets before they ever reach your origin server, then let the CDN handle format negotiation, caching, and geographic delivery on top of an already-lean file. Skipping the first step and expecting the CDN to fully compensate is the most common way people overpay for image delivery regardless of which provider they picked.

Optimage handles that first step free, in the browser, before anything hits your CDN bill.

What to Do This Week

Check your current CDN bill against what BunnyCDN would actually cost at your traffic level — for most image-heavy sites, it's a meaningful drop with no loss of functionality. If you're paying Cloudflare's Pro or Business tier purely for image resizing and don't need the security stack, that's money going to a feature you're not using. And regardless of which CDN you land on, compress your source images before upload — it's the step that makes every other optimization layer actually matter.

Related reading:

• Optimage vs Squoosh: Which Image Compressor Should You Use? — the pre-upload compression step this article assumes
• Why Your LCP Is Failing and How to Fix It — CDN choice is one lever among several
• How to Optimize Images for Google PageSpeed Insights — where CDN delivery fits into the bigger performance picture