Technical Specs
Dhito Reference Sheet
A comprehensive, structured guide of the technical specifications, compatibility, and on-device models powering Dhito — plus the full list of file tools and answer rows, and where it stands against the alternatives.
On-Device AI Models
Dhito bundles lightweight, highly optimized open models that run 100% locally on your device.
| Task | AI Model | Execution Mode | Privacy Guarantee |
|---|---|---|---|
| Semantic Search | BGE-small-en-v1.5 | Apple Neural Engine / CPU | 100% Local Vector Space |
| Audio & Video Transcription | OpenAI Whisper | Apple Neural Engine / CoreML | Offline speech-to-text mapping |
| Image Visual Understanding | Microsoft Florence-2 | GPU / Metal | On-device visual feature tagging |
| Result Reranking | MS-MARCO Cross-Encoder | Apple Neural Engine / CPU | On-device relevance scoring |
| Document QA / Summarization | Qwen3 (Quantized) | Unified Memory GPU | Offline context generation (RAG) |
System Compatibility
- Supported OS: macOS 13.0 (Ventura) or newer.
- Processor support: Apple Silicon required (M1, M2, M3, M4 series). Intel-based Macs are not supported.
- Memory (RAM): 8GB minimum, 16GB unified memory recommended for optimal background indexing.
- Disk Space: ~350 MB to download; roughly 1.2 GB on disk once installed, for the application binary and the bundled models, plus the index itself.
Data & Privacy Guard
- No Cloud Pipeline: Dhito functions without internet access — search, chat, the file tools and every answer row but currency need no connection at all. All vector weights stay on local storage.
- Zero Analytics Tracking: We collect no file data of any kind — not contents, not filenames, not search queries, not usage telemetry.
- Outbound Calls, In Full: Licence validation sends a hardware ID and your billing email. The currency answer row — on by default, switchable off — downloads the day’s exchange-rate table once a day and converts from that local copy; the request carries no file, no path, no identifier and nothing you typed. Those are the only two, and the app is fully usable offline between them.
- Apple Notarized: Installer is officially code-signed and scanned by Apple Gatekeeper for safety.
Supported File Formats
Over 100 file extensions in total.
Documents & Text
PDF, DOCX, DOC, RTF, ODT, EPUB, TXT, Markdown (.md), RST, CSV, TSV, plus HTML, CSS, JSON, XML, YAML, TOML, SVG and around 33 code formats
Images
JPEG, PNG, HEIC, HEIF, WebP, PSD, TIFF, BMP, ICO, AVIF, and camera RAW (CR2, CR3, NEF, ARW, DNG, ORF, RW2, RAF, PEF, SRW) — OCR + visual tagging
Audio & Video
17 video containers (MP4, MOV, AVI, MKV, WebM, M4V, MPEG…) and 14 audio containers (MP3, WAV, M4A, FLAC, AAC, OGG, OPUS…), indexed by transcript at segment level
Not supported
Spreadsheets and slide decks: XLSX, XLS, PPTX and PPT. Apple iWork: Pages, Keynote and Numbers. Adobe InDesign and Illustrator. Word documents are supported — the gap is spreadsheets, decks and iWork specifically.
File Tools
Around 45 verbs, every one of them running on the machine. Reachable from a result’s right-click menu, the selection bar after a multi-select, the Tools tab, or by typing the verb into ordinary search.
| Family | Verbs |
|---|---|
| Images | Convert to JPG / PNG / WEBP (HEIC in), compress, compress to a size budget, resize, strip EXIF + GPS, combine into one PDF |
| Merge, split, convert to images, compress, compress to a size budget, add page numbers, watermark, extract text, compare two PDFs with the differences explained by the local model | |
| Spreadsheets & data | Convert to CSV / Excel / JSON, clean up a CSV, format and validate JSON, generate TypeScript types from JSON |
| Documents | DOCX, Markdown and HTML to PDF, Word, HTML, Markdown or plain text |
| SVG | To PNG or JPG, optimize, to a React or Vue component, to a data URI |
| Text | Diff two files, change case |
| Audio | To MP3, compress, trim, join, extract the audio track from a video |
| Any file | Checksum (SHA-256, SHA-1, MD5), Base64, zip, unzip, summarize |
- A tool never overwrites. Every run writes a new file beside the original (
photo.jpg→photo-compressed.jpg), and that result appears as a row at the top of the results so the next tool can be chained onto it. - Undo is the Trash. The Finder’s own Put Back works, so recovering a file never depends on Dhito being open.
- Bulk runs report honestly. A run that fails on two of nine files says which two and keeps the other seven.
- Nothing is uploaded. Every verb runs on the machine, with no network call of any kind.
Answer Rows
Around 20 answers, typed into the ordinary search box and returned above the file results before the search finishes. Cmd + C copies. Everything except currency is pure local computation.
Maths & conversion
Arithmetic, percentages, unit conversion, cooking conversion, aspect ratios, shoe sizes, random numbers and coin flips, currency
Time & text
Timezone conversion, date maths, lorem ipsum, text case, random strings, dictionary definitions via macOS DictionaryServices — offline
Developer & design
Hashes, UUID v4 and v7, passwords and passphrases, Base64, QR codes, barcodes, hex colour with a WCAG contrast check
The one row that uses the network
Currency — on by default and switchable off — downloads the day’s exchange-rate table once a day and converts from that local copy. The request carries no file, no path, no identifier and nothing you typed.
Search Product Matrix
| Feature Capability | Dhito AI | macOS Spotlight | Alfred / Raycast | Fenn | Sortio |
|---|---|---|---|---|---|
| Semantic Search (Synonyms/Meaning) | |||||
| 100% Offline Processing | |||||
| Audio & Video Transcription | |||||
| Visual Image Search (descriptions) | (OCR planned) | ||||
| Offline Document QA Chat | (Pro is Cloud) | ||||
| App Launching by Purpose | (by name) | (by name) | |||
| Built-in Local File Tools | ~45 verbs, on-device | Quick Actions (macOS 26) | Via third-party extensions | ||
| Inline Answer Rows | ~20, local except currency | Calculations and conversions | Calculator and conversions | ||
| Notes as a Search Source | Apple Notes + Markdown vaults | Apple Notes | Apple Notes, Bear, Notion, Craft | ||
| Document Format Coverage | 100+ extensions; no Excel, PowerPoint or iWork | System-wide | Defers to the OS index | 50+, incl. Office, iWork, Adobe | Sorts by name and metadata |
| Subscription Cost | $4.99/mo month to month, or $99 once; 14-day trial | Built-in (Free) | Free tier; Raycast Pro $8/mo billed annually | $9/mo billed annually ($108 up front), or $249 lifetime | Free tier; Pro $14.99/mo or $99/yr |
Competitor prices and capabilities were checked against each product’s own site in September 2026. Published pricing moves — confirm on their site before relying on it. Where a row reads “not advertised” or is marked absent for a competitor, that means the product does not claim the capability on its own site, not that we tested and found it missing.