Sheaf
Split big files for AI chats
Only for Mac
$2.99
Mac
Split huge logs, CSVs and transcripts into ordered, token-aware parts that fit any AI chat's context window. Fully offline, on your Mac.
Big files don't fit an AI's context window. A long log, a wide CSV export, a full chat transcript — paste it in and the chat truncates, errors, or silently drops the end. Sheaf prepares those files first: it splits them into smaller, ordered, AI-ready parts that fit the budget you choose, so you feed them in one clean piece at a time.
Sheaf is the instrument; you stay in control. It does not talk to any AI itself, send anything anywhere, or need an account. It runs entirely on your Mac.
WHAT IT DOES
- Token estimate per part and a headline total, so you can see at a glance how each piece lands against a model's limit.
- "Split for" presets — Claude, GPT-4o, Gemini, or Custom — each setting a sensible per-file budget you can adjust.
- Cut by characters or by lines, your choice.
- Whole lines are never split. A log line, a CSV row, a JSON record stays intact in one part.
- Lossless: with markers off, concatenating the parts reproduces your original file exactly — byte for byte.
- Optional "part X of N" markers that label each file and chain them in order, so a model knows where it is in the sequence.
- "Save N parts…" writes every part to a folder you pick, with Reveal in Finder when it's done.
- Open With support — right-click a text, log, or CSV file and open it straight into Sheaf.
- A Count unit you control: measure in characters or UTF-8 bytes.
- Five visual themes. The signature green adapts to system light and dark; four more are crafted light aesthetics.
FULLY OFFLINE, FULLY PRIVATE
- No network. No accounts. No sign-in.
- No analytics, no tracking, no data collection of any kind.
- Sandboxed, with access only to the files you explicitly choose.
- Everything happens on device. Your files never leave your Mac.
WHO IT'S FOR
Developers handing a giant log or stack trace to an AI for debugging. Data folks who need a wide CSV in digestible parts. Writers and researchers pasting long transcripts, drafts, or datasets into a chat. Anyone who has hit "message too long" and wants the file split cleanly, in order, the first time.
Sheaf does one job and does it precisely: it gets your big files ready for AI, then gets out of the way.
Ratings & Reviews
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The developer, George Hales, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- George Hales
- Size
- 3 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
English and 5 more
- English, French, German, Japanese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 George Hales
