Limits and quotas - Platform reference

Account quotas

Quota	Default	Counted over	Notes
Deployment size	1,000,000	All your routes	Decimal, so about 1 MB. Each route is charged for everything stored for it, which is several times the size of your source file. See How deployment size is counted.
Edge workers	5	All your routes	One for each route that has an edge worker. Redeploying a route without `<script type=worker edge>` deletes its worker and frees the slot.
Claimed domains	1	Your account	A `name.rt.ht` subdomain. A custom domain needs an upgraded account. See Domains and subdomains.
Path routes	Any number	Under your domain	Within the size and worker totals above. A path route needs no claim of its own.

A deploy that goes over the size or the worker quota fails as a whole with storage quota exhausted. The message does not say which of the two ran out. If a deploy would claim a domain beyond your quota, it fails with a message that the domain quota is used up.

How deployment size is counted

The size is not the size of your source. For each route, RTEdge.net adds up what it stores: your source with its editor state, the served page, every exported file and worker asset, and the worker code. Deploying to several routes charges each of them in full. Redeploying a route replaces its previous size, and deleting it frees the size.

The user menu in the playground shows a workers meter and a storage meter with what is used, the quota and what is free. They refresh when you open the menu, and after a deploy or a delete while it is open. Measuring code size shows how to see the size of your own files.

Names and routes

Rule	Limit	Notes
Subdomain length	At least 4 characters	A shorter name is shown as not available.
Subdomain characters	Letters, digits and `-`	The name does not start with `_` and is not a reserved word. See Domains and subdomains.
Route path segments	Letters, digits, `-`, `_` and `~`	A segment cannot contain a `.`. See Reserved paths for the strings that are refused.
Editors	`person@domain.tld`, `domain.tld` or `*`	A domain needs a dot and cannot be an IP address. `*` means any signed-in account.

Deploys and history

What	Limit	Notes
Deploy request	60 seconds	The playground gives up after that. Bundling the static imports of a worker before the deploy has its own limit of 60 seconds.
Deploy note	No enforced length	The note is collapsed to one line. Keep it short, about 200 characters. The version viewer cuts long notes in its lists and shows the whole note in its tooltip.
Version history	The newest 100 versions	The viewer loads 100 at a time. `edge.versions()`, Smart Undo and the size history read the newest 100. See Versions and Smart Undo.
Screenshot	20 seconds for each attempt	A failed attempt is retried. The page is captured at 1200 by 630 CSS pixels, at twice the scale. See Social previews and screenshots.
Your social tags	The first 8,192 characters of the page	A tag you write further down does not replace the generated one.

KV storage

The limits of env.KV, in the playground and on RTEdge.net. Data written in the playground stays in the browser and never syncs with RTEdge.net.

Limit	Playground	RTEdge.net
Value plus metadata, per key	64 KiB (65,536 bytes)	10 MiB (10,485,760 bytes)
When it is exceeded	`put()` throws `KV storage limits exceeded` and writes nothing.	`put()` throws `KV storage limits exceeded`.
Stored key	Fewer than 512 bytes, with the hidden scope prefix counted	At most 512 bytes, with the hidden scope prefix counted
Metadata	Counted with the value	At most 1,024 bytes of JSON
Expiry	No minimum	`expirationTtl` of at least 60 seconds, and an `expiration` at least 60 seconds ahead
`list()`	See Storing data in KV	`limit` defaults to 1,000, which is also the maximum
Bulk `get()`	Up to 100 keys	Up to 100 keys
Writes to one key	Not documented	One per second
Operations per invocation	Not documented	At most 1,000 KV operations. A `put()` or `delete()` costs a read and a write.

On RTEdge.net, KV is eventually consistent. A write is usually visible at once in the same location but can take a minute or more elsewhere, and there are no atomic increments, so concurrent counters lose updates. Cloudflare publishes the underlying KV limits. A worker built with a shell older than 2025-09-29, which its edge-worker header shows (see Response headers), still has the older 64 KiB cap on RTEdge.net. Redeploy it to get the current limit.

Other limits

What	Limit	Notes
Index page size (`N`)	1,000	The default and the maximum for the `` index of your deployments. See The `` suffix.
KV viewer page size (`N`)	Default 25, maximum 1,000	For `::kv`. Experimental
QR code data	L 2,953, M 2,331, Q 1,663, H 1,273 bytes	UTF-8 bytes at each error-correction level of `::qr`. Longer input answers 400. Experimental
Request rate	Limited	The platform limits how fast a visitor can send requests, and how fast you can deploy. The numbers are not published. A visitor over the limit gets a 429 page, and a deploy reports "Rate limit hit. Try again later!"

Playground limits

The playground has no deploy quotas. It limits worker imports: a build stops with "Load exceeds size budget" when the modules it loads add up to more than 20 × 1024² characters of text, or more than 10 MiB when gzipped, and with "Input exceeds size budget" when the import statements themselves are that large. See Importing modules and WebAssembly.