Drazil · Help

Docs

Start anywhere; the app is one workspace. Every tool has a real address and a full guide — here is the map, and how not to lose your work.

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Step 1

Open the app. Everything lives behind one door — the workspace at /home. No account, no install.

Step 2

Do the thing you came to do. Every card on the home screen is a tool with its own full guide behind it.

Step 3

Export a backup. Your work lives on this device only — one tap in the Library (more) keeps it safe.

Create & typeset

Documents, PDFs and the tools that make them.

Document generatorDraft agreements, letters, resumes, reports, stories and more in a short chat with the Document Generator. No upload, no account, hidden templates guide it. HTML viewerOpen a single HTML file or a whole folder of HTML, CSS, JS and assets, rendered sandboxed in your browser. Works offline, no upload, no account. Free. Images to PDFCombine images into one tidy PDF in your browser, in the order you choose. Free, no account, all files processed on your device. Nothing is uploaded. Interactive diagramsAI-drawn study diagrams of any topic, which you can move, label and quiz yourself on. They are saved locally in your browser. No account, no upload. LaTeX editorA LaTeX editor for whole documents with a real TeX Live 2025 XeLaTeX compiler in the loop. Draft and restructure, then compile locally. No upload. LaTeX to PDFCompile real LaTeX to a typeset PDF right in your browser. A TeX Live XeLaTeX engine runs locally as WebAssembly. No install, no account, no upload. Professional document engineDescribe the document you want and get a real typeset PDF, planned, designed and typeset locally in your browser, then exported. No upload, no account. SVG generatorDescribe an icon, illustration or logo in plain words and download it as SVG or PNG. Generation runs on your configured AI provider, right in your browser. Text to PDFA document engine, not a print dialog. Text, Markdown and HTML become paginated PDFs with real fonts, tables, code blocks and math. Runs in your browser. Video generator (Praxis)Praxis drafts a narrated lesson video from notes or a topic, with local text-to-speech, captions and a CPU render. Free, no account, nothing uploaded. WhiteboardDraw, write and pin sticky notes on a whiteboard for study and planning. Boards are saved locally in your browser, with no account and no upload. Word to PDFConvert a .docx file to PDF in your browser, keeping headings, lists, images and bold or italic text. Free, no account, and the file never leaves your device.

Study

The reading, recall and revision workspace.

AI chatChat with an AI study companion in the browser. Your AI provider answers, or free web search when no provider is configured. Free and no account needed. Ask & LearnAsk & Learn: ask a question, practice eight kinds of questions, or build a course from a topic. Answers checked against your own material. Free, no account. CalendarA month calendar in the study workspace for exams, deadlines and reminders. Import and export .ics files. Free, local, works offline, no account. Exam modeSit a timed paper in your browser with a question palette and clock, then review your mistakes afterwards. Free, private, on your device, no account. NotebooksNotebook bundles your PDFs, notes, flashcards and quizzes into a single study topic, saved to the local Library. Free, private, no account needed. NotesStudy notes in plain text and Markdown, with autosave and local storage. Start from a blank page, the Reader or a selection. Free, no account needed. Ollama guideConnect Drazil to Ollama on your own computer: install, set OLLAMA_ORIGINS, restart, choose a model. Every AI feature then stays on your machine. QuizCreate quizzes from the Reader or from pasted text: multiple choice, short and long answer. Runs free in your browser, no account, nothing uploaded. Repeat after meRepeat after me is a pronunciation drill in the study workspace: hear the line, say it back, compare the two takes. Free, local, no account needed. SimulationsInteractive browser simulations, from Game of Life to the solar system, plus new ones Drazil builds from your description. Free, local, no upload. Study workspaceA private study workspace with a PDF and Word reader, notes, highlights, flashcards, quizzes and exam mode. Your material never leaves this device. TasksTasks, timers, alarms and sticky notes, saved locally in your browser. No account, no sync service, and your plans never leave your device. Free. To-do listA to-do list for study and plans: Enter to add, due dates, recurrence, priority, projects and labels. Saved locally in your browser, free, no account. Transcript analysisPaste any transcript from any source into Drazil and turn it into notes, quizzes and flashcards. Nothing leaves your device, and no account is needed.

Convert & compress

Formats in, formats out, bytes down.

Audio converterExtract the soundtrack from a video to WAV, decoded and re-encoded locally as PCM 16-bit. Free, private, no account needed and no upload anywhere. Convert filesMKV to MP4 and other video container changes, document to PDF, CSV to JSON and several utilities, converted in your browser. Free, no account, no upload. Image converterConvert PNG, JPEG and WebP one file or a whole batch, with quality control and ZIP output. Runs in your browser, free, no account needed, no upload. Merge PDFsCombine several PDFs into one in your browser, in the order you choose, the text layer kept searchable and selectable. Free, no account, no upload. Reorder PDF pagesReorder PDF pages by dragging them on a thumbnail strip, rotate sideways scans and delete blanks, then download it. Free, no account, nothing uploaded. Reverse PDF pagesReverse the page order of a PDF in your browser for duplex and booklet printing or backwards scans. Structural flip, text layer intact, nothing uploaded. Split PDFSplit one PDF into separate PDFs by page ranges, right in your browser, keeping text and images intact. Free, no account, and nothing is uploaded.

Edit & protect

Pages reordered, restrictions lifted, stamps added.

OCROn-device OCR with Tesseract.js reads images and multi-page PDFs entirely on your machine. The engine downloads once, then stays cached for offline. PDF editorEdit PDFs in your browser: reorder, rotate, delete, split, reverse, watermark and remove owner-password locks. Local processing, no upload, no account. Poster tilerCut a big image into printable A4 or Letter pages with overlap, crop marks and scale control. Tape them into a poster. Free, no account, no upload. Unlock PDFRemove owner-password restrictions from PDFs that open without a password, in your browser. It cannot bypass or guess unknown passwords. No upload. Watermark PDFStamp text across every page of a PDF or Word document, directly in your browser. Drazil is free, needs no account and never uploads your confidential file.

View & listen

The quiet utilities: viewers, QR, reading aloud.

DictationDictate in your browser with live transcription: browser speech or on-device Whisper. Free, private, runs on your device, no account, nothing uploaded. Dual printSplit a PDF into odd and even halves for manual duplex printing, with delay pages and reverse order. Reordered locally in your browser. No upload, no account. File narratorFile Narrator reads your documents and notes aloud in the browser, with system voices and on-device neural voices. Free, no account, fully local. Image viewerA local image editor in the browser: zoom, crop, draw, rotate, flip, remove backgrounds and filters. Pixels stay on your device, free, no account, no upload. Local libraryAn IndexedDB-backed library in your browser for files, notebooks, quizzes and decks. No account. Export everything as JSON; clearing data wipes it. QR code generatorMake QR codes for links, Wi-Fi and text, downloaded as PNG or SVG, with error correction, module size, margin and colors. Free, no account, no upload.

Your data & backups

Everything Drazil stores for you — library files, notebooks, quizzes, decks, notes, diagrams, tasks, calendar, boards and settings — lives in your browser's storage on this device only. There is no account and no server copy, which is the privacy model and the risk, said out loud: clearing your browser data clears the library.

Export, monthly. In the app: Library → Export backup. You get one portable JSON of the twelve module families, dated by the download filename. Store it anywhere you trust — it is your archive.
Restore is a choice, made explicit. Library → Import backup validates the file and shows you the counts, then asks — Merge (keep what's here, add the backup on top, same IDs overwritten, local-only entries always survive) or Replace (a snapshot of the current library is downloaded first, then only the backup survives).
Snapshots, automatically. Before a full “Clear library”, Drazil writes a snapshot download first. Before your very first save, you get a one-time reminder that this is the only copy.
AI keys are secrets. They are never written into a backup unless you explicitly say yes at the moment of export.
Between devices. Export on one, import on the other. That is the whole sync story — deliberate, visible, and yours.

Bringing old material in

The Notes toolbar has an Import button that reads every shape study material actually arrives in:

Zotero / any reference manager — RIS, BibTeX and CSL-JSON, including @string macros and wrapped abstracts
Readwise — highlights.csv and articles.csv exports
Anki — binary .apkg decks (SQLite inside — fields and tags cross over), or .txt/.tsv “Notes in Plain Text”
Quizlet — tab-separated exports, term → definition
Notion — single-page Markdown exports, one note per page

Everything lands in your notes and decks, on this device. Text is imported verbatim; media inside .apkg files is skipped on purpose — cards are text. Anki 23.10+ decks (zstd-compressed) are refused with a plain-language way out: File → Export → Notes in Plain Text.

The template gallery

The Document generator ships eight real templates, each with its own interview and its place in the flow — no prompt engineering required:

Agreement / Contract — parties, purpose, terms, signatures
Report — summary, findings, recommendations
Resume / CV — profile, skills, experience
Letter — formal, cover, complaint, thank-you
Academic essay — thesis, evidence, conclusion
Research paper — abstract, method, findings
Story — plot, characters, arc
Meeting minutes — agenda, decisions, owners

Every template lands as a Markdown draft you export to PDF, DOCX or TXT — or straight into the library.

Deep links you can share

Every tool is a real, bookmarkable URL — no shell, no hash-bang routing. Some useful ones:

/tool/<slug>/ — opens that tool directly, e.g. /tool/qr/ or /tool/latex-pdf/.
/home — the workspace itself; the address the installed app opens.
/nb/<notebook-id>/ and /nb/<notebook-id>/quiz — straight into a specific notebook, on a specific tab.
/clock — the clock, directly.
/tool/qr/?c=https://example.com — opens the QR generator with the content already filled in. The first of the prefilled-state deep links.
Installed the PWA? The system share sheet routes links and files into the Capture inbox (?shared=1).
A bookmarklet like ?clip=text&title=…&url=… clips any page into the inbox with no extra software.

Prefilled-state deep links for more tools (a quiz preloaded with questions, a clip opened straight into the reader) are landing in upcoming builds.

Offline, install & the offline page

Drazil keeps working when the network doesn't: the app shell, every tool you have opened, the PDF and image engines, and everything stored in your library. Two steps make it properly yours:

Chrome / Edge / Android — the Install button in the top bar (it appears when the browser offers) or ⋮ → “Install app” / “Add to Home screen”.
iPhone / iPad — Safari → Share → Add to Home Screen. Same result, one more tap.
No network at all? Visit /offline/ — a plain, working page that never needs a wire.

What genuinely requires the network: cloud AI providers (your calls go to them, not through Drazil), web search, and the first download of large engines (Whisper, FFmpeg, the TeX packages your document asks for).