Write the document. Study the material. Narrate the lesson.
One workspace. Many branches, deep roots.
Drazil is 44 free tools in one tab. Study runs deepest: a reader, page-attached notes, flashcards that schedule their own reviews, quizzes, exam mode. Write in Markdown or LaTeX, download a typeset PDF. Teach it back and Praxis drafts the lesson and renders the video. No install, no account, no uploads. Your files never leave this device.
FeedbackTakes you straight to the local workspace. No login, no uploads, and nothing to install.
44 tools · free forever · no account · nothing to install · files never leave this tab
01 · Text to PDF
A typesetter, not a print dialog.
Every other Markdown to PDF button is a print stylesheet in a trench coat. This one is a document engine written from scratch: its own parser, line breaker, pagination loop and maths layout. Fractions get a real rule. Delimiters grow to fit their contents. A table row that straddles a page break redraws its own edges.
Scripts are routed per run, not per block, so a line mixing English, Devanagari and Arabic keeps each in its own face, right to left included. Emoji are embedded as real images. Fonts are subset, then measured to prove the subset. If a writing system has a font, it typesets: the torture test walks fourteen scripts and counting.
When you would rather not mark it up by hand, AI Format takes plain prose plus an instruction. Say “box the key equation”, “tighten the leading” or “number the theorems”, and it applies real formatting markup, including LaTeX maths.
Figs. 1 to 3 are unretouched pages (5, 2 and 3 of 14) from the torture test, a document the engine must survive before every release. Click any page to inspect it full size.
02 · Praxis, the motion engine
Notes in. A narrated film out.
Give Praxis a topic, a PDF or your own notes and it drafts the lesson, draws the scenes, speaks the narration and records a captioned 1080p60 file. The whole production runs on your CPU, with no queue and no credits. Three neural voices run locally: Kokoro, Piper with 900+ speakers, and Chatterbox for cloning. None of them is a cloud API.
No AI provider configured? A deterministic offline planner still writes a complete, editable lesson, and the interface always labels which tier authored it. An offline draft can never masquerade as AI.
03 · LaTeX Studio, new
AI assistance over a real compiler.
Studio is a full editor for complete documents. The assistant restructures sections, writes preambles, formats theorems and hunts errors as real LaTeX. Then the local compiler settles the argument. The AI proposes; xelatex decides. What you see is what TeX produced, not a preview’s guess.
When a compile fails you get named failure blocks, the ten errors that actually bite in a browser, instead of a 4,000 line log.
“Tighten §3 into a formal theorem, box the result, and number the equations.”
Theorem 3.1 (Convergence). Every Cauchy sequence in ℝ converges.
xn → x, d(xn, x) < ε for n ≥ N(ε)(3.1)
Proof. By completeness of ℝ. ∎
Illustrative. The assistant edits real LaTeX; the page is compiled by the local engine.
04 · All tools
Everything else, in plain text.
All of it is free, and every entry below is a straight link into the app.
Text and documents: Create real PDF documents from your text, Markdown and LaTeX with Drazil Text to PDF. It is a true text to pdf generator and word to pdf converter in your browser, handling pagination, headers, fonts and images without watermarks. Convert Word to PDF instantly, export clean document to pdf files, and turn any notes into printable PDF pages with no account and no upload.
Images: Edit images in your browser with the Drazil image editor. Crop, resize, rotate, adjust brightness and contrast, add text and shapes, and convert between JPG, PNG and WebP. A fast online image editing tool with no install and no upload, built for quick photo and graphics editing.
Compression: Shrink files with the Drazil compressor suite. Use the PDF compressor, image compressor, video compressor and audio compressor to reduce PDF size, optimize photos, compress MP4 and MKV video, and shrink audio files while keeping quality. Free online file compression for web, email and storage.
Poster tiler: Print big posters on small paper with the Drazil poster tiler. Split any image or PDF into tiled A4, Letter or custom sheets that you print and tape together, with overlap, crop marks and scale control. Make wall sized prints, blueprints, banners and large format posters at home on a normal printer. Tile an image across multiple pages, print oversize art, and assemble a giant poster from standard A4 sheets with no special plotter required.
Video and audio: Extract audio from any video with the Drazil audio extractor. Pull soundtracks out of MP4, MKV, MOV and WebM files and export as MP3, WAV, AAC, M4A, OGG or FLAC. Convert video and audio formats in the browser with the Drazil file converter, including mkv to mp4, MP4 to MKV, MOV, WebM, AVI, MP3 and more. Change containers, codecs and bitrates locally, extract streams, and export playable files with no cloud and no account.
HTML viewer: Browse HTML folders and files in the browser with the Drazil HTML viewer with folder support. Open a project directory, preview HTML, CSS and JavaScript, navigate the file tree, render local sites, and inspect static pages offline. A fast local html folder viewer and static site preview tool.
PDF utilities: Reverse the page order of any PDF with Drazil reverse pdf. Flip pages end to first, reorder and reverse PDFs for booklet printing, and export a clean reverse order PDF in seconds. Use Drazil dual print for alternate printing pdf pages on both sides, with odd and even pages ordered for duplex and double sided printing, and no blank pages. Edit PDFs fully with the Drazil PDF editor: merge, split, reorder, reverse, watermark, unlock, annotate, rotate and compress pages in one place.
Whiteboard, diagrams and study: Plan and study with the Drazil whiteboard app with image support and AI. Add images, text, shapes and sticky notes, draw freehand, use AI to generate diagrams, mind maps and study aids, and build interactive diagrams, concept maps and notebooks. Create study notebooks, flashcards, quizzes and exam mode practice. Import your material, take structured notes, create spaced repetition cards, run quizzes, practice with exam mode, and review with interactive diagrams and simulations.
Documents & PDF
LaTeX to PDFLaTeX StudioText to PDFPDF editorMergeSplitReorderReverseDual pageWord to PDFImages to PDFWatermarkUnlockCompress
05 · Privacy
Your files are opened in your browser, not on a server.
The document, PDF, image, audio and video tools read your file into this tab, transform it, and hand it back as a download. Your work is saved to the Local Library on your own device, and the backup is yours to keep.
One feature uses the network, and only when you ask it to. AI sends the text you give it to the provider you configured, and that provider can see the text and the fact that you used the feature. Point Drazil at a local model such as Ollama and it never leaves your machine. The audio and video tools can fetch their engines (~25 MB FFmpeg, ~75 or ~500 MB Whisper) once on first use; after that, they work offline.
No account is needed, and nothing here is paid. If that, or how the site is operated, changes, this page will say so rather than leaving an old promise standing.
06 · FAQ
Reasonable doubts, answered briefly.
Do my files get uploaded?
No. The document, PDF, media and study tools run in this tab: your file is read into memory, transformed, and handed back as a download. One feature uses the network, and only when you use it. AI sends the text you give it to the provider you chose, and that provider can see the text; a local model keeps it on your machine.
Open any tool →Is the LaTeX a real compiler or a maths renderer?
A real compiler, not a renderer: TeX Live 2025’s xelatex compiled to WebAssembly, 672 packages bundled, with refs and citations resolved by automatic reruns. A renderer cannot do that, because it never runs a second pass.
Try the compiler →How is Text to PDF different from the browser’s Print to PDF?
A real document engine, not a print stylesheet: Drazil’s engine is written from scratch, its own parser, line breaker, pagination loop and maths layout. That is why the specimen pages above exist at all.
Open the typesetter →Does the video engine need a subscription or cloud credits?
No. Rendering and narration run on your CPU. With no AI provider configured, a deterministic offline planner still drafts complete, editable lessons, always labeled as such.
Open Praxis →Where does my work live?
In your browser’s Local Library, backed by IndexedDB on your device and exportable as JSON. It is the only copy, so keep a backup. Clearing your browser data clears the library.
Open the Library →Does it work on phones and tablets?
The app is responsive and runs on tablets. The LaTeX compiler and long video exports want a desktop to be comfortable.
Open the app →Plant something. It costs nothing.
no account · no credits · no uploads · open a tool and start