Nav0 v0.1.2 Performance Update: Even Lighter on the Same Hardware
By Ketan Patil · April 5, 2026 · 4 min read
Update: These figures are from Nav0 v0.1.2. Nav0 has kept improving since; the current build is v0.3.0. The numbers below remain a v0.1.2 snapshot against the original v0.0.6 benchmark.
A month ago, we published a head-to-head performance benchmark comparing Nav0 v0.0.6 against Google Chrome on a MacBook Pro M1. Nav0 used 48.5% less memory and 86.3% less CPU.
We just re-ran the same test on the same machine with Nav0 v0.1.2. The numbers got better.
The Setup
Same MacBook Pro M1. Same 8 CPU cores. Same 16 GB RAM. Same test script, same 15 rotating URLs, same methodology. The only differences: Nav0 v0.1.2 (up from v0.0.6) and a newer Chrome version.
For full details on the testing methodology — how we measure memory, CPU, process trees, and why we use macOS's footprint command — see the original benchmark post.
Nav0 v0.0.6 vs v0.1.2: What Changed
Memory Usage
| Tabs | v0.0.6 | v0.1.2 | Improvement |
|---|---|---|---|
| 10 | 1,247 MB | 1,162 MB | -85 MB (-6.8%) |
| 20 | 2,461 MB | 2,243 MB | -218 MB (-8.9%) |
| 30 | 3,755 MB | 3,632 MB | -123 MB (-3.3%) |
| 40 | 4,345 MB | 3,417 MB | -928 MB (-21.4%) |
| 50 | 4,294 MB | 4,287 MB | -7 MB (-0.2%) |
Memory improved across every tab count. The biggest gain was at 40 tabs, where v0.1.2 uses nearly 1 GB less RAM than v0.0.6. The efficient scaling behavior we noted in the original benchmark — memory growth flattening at higher tab counts — is still present. At 50 tabs, Nav0 uses roughly the same memory as at 40 tabs on v0.0.6.
CPU Usage
| Tabs | v0.0.6 | v0.1.2 | Improvement |
|---|---|---|---|
| 10 | 8.0% | 5.5% | -2.5 pts (-31.3%) |
| 20 | 9.1% | 5.8% | -3.3 pts (-36.3%) |
| 30 | 11.8% | 11.4% | -0.4 pts (-3.1%) |
| 40 | 12.0% | 8.9% | -3.1 pts (-26.2%) |
| 50 | 24.4% | 20.0% | -4.4 pts (-18.0%) |
CPU dropped at every tab count. The average across all tests went from 13.1% to 10.3%. At 10 and 20 tabs — where most people browse — CPU usage dropped by about a third.
Process Count
| Tabs | v0.0.6 | v0.1.2 | Improvement |
|---|---|---|---|
| 10 | 22 | 18 | -4 (-18.2%) |
| 20 | 34 | 30 | -4 (-11.8%) |
| 30 | 43 | 41 | -2 (-4.7%) |
| 40 | 53 | 51 | -2 (-3.8%) |
| 50 | 62 | 61 | -1 (-1.6%) |
Slightly fewer processes across the board, with the biggest reduction at lower tab counts.
Nav0 v0.1.2 vs Chrome: The Updated Comparison
Here's how v0.1.2 stacks up against the current version of Chrome on the same M1 hardware.
Memory Usage
| Tabs | Chrome | Nav0 v0.1.2 | Difference |
|---|---|---|---|
| 10 | 1,174 MB | 1,162 MB | -12 MB (-1.0%) |
| 20 | 4,155 MB | 2,243 MB | -1,912 MB (-46.0%) |
| 30 | 5,377 MB | 3,632 MB | -1,745 MB (-32.5%) |
| 40 | 6,012 MB | 3,417 MB | -2,595 MB (-43.2%) |
| 50 | 10,292 MB | 4,287 MB | -6,005 MB (-58.3%) |
At 50 tabs, Chrome consumed over 10 GB. Nav0 used 4.3 GB — saving nearly 6 GB of RAM. Chrome's behavior at 50 tabs is particularly striking: it jumped from 6 GB at 40 tabs to over 10 GB, suggesting the system was under pressure. Nav0 scaled gracefully from 3.4 GB to 4.3 GB.
Average: Chrome 5,402 MB vs Nav0 2,948 MB — Nav0 uses 45.4% less memory.
CPU Usage
| Tabs | Chrome | Nav0 v0.1.2 | Difference |
|---|---|---|---|
| 10 | 15.4% | 5.5% | -9.9 pts (-64.2%) |
| 20 | 15.3% | 5.8% | -9.5 pts (-62.1%) |
| 30 | 39.2% | 11.4% | -27.8 pts (-70.8%) |
| 40 | 37.5% | 8.9% | -28.7 pts (-76.4%) |
| 50 | 118.0% | 20.0% | -98.0 pts (-83.1%) |
At 50 tabs, Chrome was saturating more than one full CPU core (118%) just to keep idle tabs alive. Nav0 at the same count: 20%. At 40 tabs, Chrome used 37.5% CPU while Nav0 used 8.9%.
Average: Chrome 45.1% vs Nav0 10.3% — Nav0 uses 77.1% less CPU.
Process Count
| Tabs | Chrome | Nav0 v0.1.2 | Difference |
|---|---|---|---|
| 10 | 30 | 18 | -12 (-40.0%) |
| 20 | 74 | 30 | -44 (-59.5%) |
| 30 | 84 | 41 | -43 (-51.2%) |
| 40 | 97 | 51 | -46 (-47.4%) |
| 50 | 108 | 61 | -47 (-43.5%) |
Summary
| Metric | v0.0.6 vs Chrome | v0.1.2 vs Chrome |
|---|---|---|
| Avg Memory | -48.5% | -45.4% |
| Avg CPU | -86.3% | -77.1% |
The margins vs Chrome shifted slightly because Chrome itself improved in newer versions — fewer processes, lower baseline memory at 10 tabs. But the story hasn't changed: Nav0 uses roughly half the memory and a fraction of the CPU of Chrome, and the gap widens as you open more tabs.
More importantly, Nav0 itself got measurably better. Less memory, less CPU, fewer processes — on the same hardware, running the same test, one month later.
We'll keep running these benchmarks with each release. The test script is open source in our repository — run it yourself and let us know what you find.
Frequently Asked Questions
How much memory does Nav0 v0.1.2 use compared to Chrome?
In our benchmark on a MacBook Pro M1, Nav0 v0.1.2 used an average of 2,948 MB across tests with 10 to 50 tabs, while Chrome used 5,402 MB — Nav0 uses 45.4% less memory. At 50 tabs, Chrome consumed over 10 GB while Nav0 used 4,287 MB, saving nearly 6 GB of RAM. The full methodology is described in our original benchmark post.
Did Nav0 v0.1.2 improve performance over v0.0.6?
Yes. On the same MacBook Pro M1 hardware, Nav0 v0.1.2 uses up to 21% less memory (928 MB savings at 40 tabs), up to 36% less CPU, and spawns fewer processes than v0.0.6. Average CPU dropped from 13.1% to 10.3% across all tab counts. Memory improved at every tab count tested.
How much CPU does Nav0 use compared to Chrome with 50 tabs?
With 50 tabs open on a MacBook Pro M1, Chrome used 118% CPU — saturating more than one full core just to keep idle tabs alive. Nav0 v0.1.2 used just 20%. On average across all tab counts, Nav0 used 77.1% less CPU than Chrome. At 10 and 20 tabs, Nav0's CPU usage was under 6%.
Is Nav0 getting faster with each release?
Yes. Between v0.0.6 (March 2026) and v0.1.2 (April 2026), Nav0 improved memory usage at every tab count tested (10 through 50), reduced CPU usage by up to 36%, and decreased process counts. These improvements were measured on the same M1 hardware using the same benchmark methodology, ensuring an apples-to-apples comparison.
What is the best lightweight browser for MacBook in 2026?
Nav0 v0.1.2 uses 45% less memory and 77% less CPU than Chrome in head-to-head benchmarks on a MacBook Pro M1. It has zero telemetry, a built-in ad blocker, and is fully open source under the MIT license. It is designed to be the lightest full-featured browser for macOS while still rendering the modern web effectively.
Download Nav0 — free, open source, and light on your system.
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