Ethereum blob limit bumps up to 21, boosting network scalability

Ethereum scalability was boosted connected Wednesday with the 2nd Blob Parameter-Only hard fork, raising the blob bounds from 15 to 21, the archetypal of galore improvements aimed astatine scaling the Ethereum ecosystem successful 2026.

The 2nd BPO hard fork, which took effect connected Wednesday astatine 1:01:11 UTC, further increases Ethereum’s information throughput by allowing much transactions to beryllium batched via rollups.

The BPO hard fork besides raised the blob people from 10 to 14, which is wide seen arsenic the much important metric to watch, arsenic consistently approaching the 21-blob bounds could overload node bandwidth and storage.

One blob portion fits 128 kilobytes of data, meaning Ethereum tin present store up to 2,688 KB successful a azygous block. 

Source: Terence Chan

Blobs assistance support Ethereum mainnet steady

While blobs boost transaction throughput connected Ethereum furniture 2s, they besides assistance stabilize state fees connected the Ethereum mainnet arsenic the web becomes little congested.

YCharts data shows that Ethereum transaction fees person been acold much unchangeable since the archetypal BPO hard fork connected Dec. 9, 2025.

Change successful Ethereum fees implicit the past 12 months. Source: YCharts

Gas bounds rise besides connected the radar

Participants successful the Ethereum All Core Developers gathering connected Dec. 15 besides discussed the thought of raising the web state limit from 60 cardinal to 80 cardinal erstwhile the 2nd BPO hard fork was implemented.

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Doing that would straight summation the fig of transactions and astute declaration operations that tin acceptable successful each Ethereum artifact — further boosting wide throughput portion perchance lowering fees.

Glamsterdam hard fork is besides focused connected scalability

Later successful 2026, the Glamsterdam hard fork will let the state bounds to ratchet up to 200 cardinal and present “perfect parallel processing.”

Perfect parallel processing volition go feasible connected Ethereum done Block Access Lists nether Ethereum Improvement Proposal-7928, which seeks to alteration Ethereum’s single-lane mode of transaction processing into a multi-lane highway, further expanding transaction throughput.

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