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Core Feature
Large Document Performance
Smooth, lag-free scrolling in documents of any size. No stutter, no waiting, just instant response.
The problem with large docs
Most markdown viewers choke on large files. They try to render everything at once, causing lag, stuttering, and sometimes crashes. Ohai takes a different approach.
How it works
Virtualized Rendering
Only renders content that's currently visible on screen.
Instant Scrolling
Scroll through thousands of lines with zero lag or stutter.
On-Demand Loading
Content is prepared just-in-time as you scroll.
Memory Efficient
Constant memory usage regardless of document size.
Specifications
500KB+ documents
1MB+ supported
60fps scrolling
TextKit 2 engine
Under the hood
Ohai uses Apple's TextKit 2 with NSTextView for large documents. TextKit 2 automatically virtualizes content, rendering only visible lines. Combined with our hybrid file monitoring, you get instant updates even in massive files.
Ready to open that giant README?
Download for Mac