All tools
Every tool, one list.
44 tools, all free, all running in this tab. Type a word to filter, or wander. Nothing uploads; nothing is behind an account.
Study & AI
- Study workspace A private study workspace with a PDF and Word reader, notes, highlights, flashcards, quizzes and exam mode. Your material never leaves this device. Open
- Quiz Create quizzes from the Reader or from pasted text: multiple choice, short and long answer. Runs free in your browser, no account, nothing uploaded. Open
- Exam mode Sit a timed paper in your browser with a question palette and clock, then review your mistakes afterwards. Free, private, on your device, no account. Open
- Notes Study 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. Open
- Notebook Notebook bundles your PDFs, notes, flashcards and quizzes into a single study topic, saved to the local Library. Free, private, no account needed. Open
- Chat Chat 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. Open
- Ask & Learn Ask & 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. Open
- To-do A 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. Open
- Tasks Tasks, timers, alarms and sticky notes, saved locally in your browser. No account, no sync service, and your plans never leave your device. Free. Open
- Calendar A month calendar in the study workspace for exams, deadlines and reminders. Import and export .ics files. Free, local, works offline, no account. Open
- Library An IndexedDB-backed library in your browser for files, notebooks, quizzes and decks. No account. Export everything as JSON; clearing data wipes it. Open
- Repeat after me Repeat 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. Open
- Narrator File Narrator reads your documents and notes aloud in the browser, with system voices and on-device neural voices. Free, no account, fully local. Open
- Dictation Dictate in your browser with live transcription: browser speech or on-device Whisper. Free, private, runs on your device, no account, nothing uploaded. Open
- Transcript analysis Paste any transcript from any source into Drazil and turn it into notes, quizzes and flashcards. Nothing leaves your device, and no account is needed. Open
- LaTeX Studio A LaTeX editor for whole documents with a real TeX Live 2025 XeLaTeX compiler in the loop. Draft and restructure, then compile locally. No upload. Open
Documents & PDF
- PDF editor Edit PDFs in your browser: reorder, rotate, delete, split, reverse, watermark and remove owner-password locks. Local processing, no upload, no account. Open
- Merge PDFs Combine several PDFs into one in your browser, in the order you choose, the text layer kept searchable and selectable. Free, no account, no upload. Open
- Split PDF Split one PDF into separate PDFs by page ranges, right in your browser, keeping text and images intact. Free, no account, and nothing is uploaded. Open
- Reorder PDF pages Reorder PDF pages by dragging them on a thumbnail strip, rotate sideways scans and delete blanks, then download it. Free, no account, nothing uploaded. Open
- Reverse PDF pages Reverse the page order of a PDF in your browser for duplex and booklet printing or backwards scans. Structural flip, text layer intact, nothing uploaded. Open
- Unlock PDF Remove owner-password restrictions from PDFs that open without a password, in your browser. It cannot bypass or guess unknown passwords. No upload. Open
- Watermark PDF Stamp 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. Open
- Document generator Draft agreements, letters, resumes, reports, stories and more in a short chat with the Document Generator. No upload, no account, hidden templates guide it. Open
- Professional documents Describe the document you want and get a real typeset PDF, planned, designed and typeset locally in your browser, then exported. No upload, no account. Open
- Text to PDF A 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. Open
- Word to PDF Convert 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. Open
- Images to PDF Combine 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. Open
- Dual page viewer Split 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. Open
- LaTeX to PDF Compile 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. Open
Images, video & audio
- Image viewer A 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. Open
- Image converter Convert 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. Open
- Audio converter Extract 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. Open
- Praxis video 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. Open
- Image generator Describe 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. Open
- Poster and image tiler Cut 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. Open
Utilities
- Convert MKV 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. Open
- HTML preview Open 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. Open
- OCR On-device OCR with Tesseract.js reads images and multi-page PDFs entirely on your machine. The engine downloads once, then stays cached for offline. Open
- QR code generator Make 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. Open
- Whiteboard Draw, 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. Open
- Interactive diagrams AI-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. Open
- Simulations Interactive browser simulations, from Game of Life to the solar system, plus new ones Drazil builds from your description. Free, local, no upload. Open
- Local models Connect Drazil to Ollama on your own computer: install, set OLLAMA_ORIGINS, restart, choose a model. Every AI feature then stays on your machine. Open
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