---
title: "Cloudflare Workers size limit is now 64 MiB uncompressed on all plans: 2026-09-04 | Harbyn"
description: "Cloudflare Workers size limit is now 64 MiB uncompressed on all plans, announced Sep 4, 2026."
canonical: "https://harbyn.com/changes/cloudflare/2026-09-04-workers-deploy-larger-workers-up-to-64-mib-for-both-free-and-paid-plans"
last-updated: 2026-10-08
---

# Cloudflare Workers size limit is now 64 MiB uncompressed on all plans

Markdown version of <https://harbyn.com/changes/cloudflare/2026-09-04-workers-deploy-larger-workers-up-to-64-mib-for-both-free-and-paid-plans>.

Behavior change - Cloudflare. info severity. In effect.

Worker deploys are no longer rejected for exceeding a compressed size of 3 MB (Free) or 10 MB (Paid); only the uncompressed bundle size is checked, with a 64 MiB limit on all plans.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Cloudflare](https://harbyn.com/vendors/cloudflare.md) |
| Kind | Behavior change |
| Severity | info |
| Status | In effect |
| Announced | Sep 4, 2026 |
| Added to Harbyn | Oct 8, 2026 |
| Lead time | No dated deadline |
| Vendor page | <https://developers.cloudflare.com/changelog/post/2026-09-04-increased-worker-size-limit/> |
| Review | Reviewed by a person, extracted by a deterministic parser |

## Find it in your code

```sh
npx harbyn scan
```

This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Cloudflare, from its packages and API hosts. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://developers.cloudflare.com/changelog/rss/workers.xml> (changelog, fetched 2026-10-08 17:16 UTC, sha256 `973fb8762af99818dc6dbcdab6ede7e50c65150b9db76acf6eb3f0f95506d863`)

## Related changes

### More from Cloudflare

- [Miniflare v5 changes local development behavior and APIs](https://harbyn.com/changes/cloudflare/2026-09-08-workers-miniflare-v5-prepares-local-development-for-the-cf-cli.md) (Breaking change, announced Sep 8, 2026)
- [Radar top browsers and NetFlows summary endpoints deprecated](https://harbyn.com/changes/cloudflare/2026-10-02-radar-top-browsers-and-netflows-summary-endpoints-deprecated.md) (Deprecation, effective Apr 2, 2027)
- [Array form of createBatch() is deprecated](https://harbyn.com/changes/cloudflare/2026-10-08-workflows-workers-create-workflow-instance-batches-by-count-or-list-2.md) (Deprecation, announced Oct 8, 2026)
- [Clef returns decisions up to 2x faster on Workers AI](https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-2.md) (Behavior change, announced Oct 9, 2026)

### Changes at other vendors

- [Amazon Selling Partner API: ORDER\_CHANGE notifications add PreFulfillmentStatusChange for Amazon Autos](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-3.md) (effective Oct 28, 2026)
- [BigCommerce: 301 redirects will apply only to storefront channels](https://harbyn.com/changes/bigcommerce/2026-10-07-301-redirects-now-apply-to-storefront-channels-only.md) (effective Nov 10, 2026)
- [GitHub: Secret scanning audit log business field changes to enterprise slug](https://harbyn.com/changes/github/2026-10-20-updates-to-github-secret-scanning-7.md) (effective Nov 12, 2026)
- [Jira / Atlassian Cloud: New IP address ranges in use from January 1, 2027](https://harbyn.com/changes/atlassian-jira/2026-10-16-atlassian-cloud-adds-new-ip-address-ranges.md) (effective Jan 1, 2027)

[All upcoming deadlines](https://harbyn.com/deadlines.md)