CLOUDFLARE has increased the maximum uncompressed code bundle size for Cloudflare Workers to 64 MiB on both free and paid plans, effective from 7 September 2026. Previously, deployments were judged by the size of the compressed bundle, with limits of 3 MB (free) and 10 MB (paid). Under the new rules, only the uncompressed bundle size is counted toward the limit, while the GZIP-compressed size is now shown for reference rather than as a gating factor.
The change primarily tackles issues with large JavaScript dependencies, frameworks, and generated code that previously failed deployments due to the lower limits. The 64 MiB cap applies to the code bundle itself; it does not increase the Worker’s runtime resources. The baseline runtime constraints remain: the free tier supports up to 100,000 requests per day, 10 milliseconds of CPU time, and 128 MB of memory; the paid tier provides larger memory, with more generous request and CPU time allowances.
Cloudflare notes that larger Workers may incur higher startup overhead, so developers are advised that bundling static files or large binaries into a single Worker is still not recommended. Before deployment, developers can verify the uncompressed bundle size with Wrangler’s dry-run, which reports Total Upload as the uncompressed size and gzip as reference.