A real document editor in your browser
SlimDoc writes true A4 pages and exports print-perfect PDFs — entirely on your device. No account, no upload, no watermark. Your document never leaves your machine.
How it works
From blank page to PDF in three steps
Write on a real page
Type onto a true A4 page. SlimDoc paginates live — page breaks appear as you write. Format text, drop in tables and images, add headers and footers.
Save one self-contained file
Press Ctrl/Cmd+S. SlimDoc writes a single .html file with all styling inlined. It re-opens straight back into the editor and renders in any browser. No proprietary format.
Print or export to PDF
One click sends the finished page to your browser's native print dialog. Backgrounds, headers, footers and page numbers all resolve. The PDF is faithful to the page.
Everything SlimDoc does
A complete document editor — all of it on your device
Rich text, real pages, headers and page numbers, tables, images, templates and faithful PDF export. No feature gated behind an account.
Writing & formatting
A full rich-text editor with a precise, paper-like feel.
- H1 to H4 headings; bold, italic, strikethrough and highlight
- Text color with a full color picker
- 9 font families and font size from 6 to 100px
- Line spacing presets: single, 1.15, 1.5, double, 2.5, triple
- Alignment left, center, right or justify
- Bullet and numbered lists, blockquotes, horizontal rules, hyperlinks
- Inline code and code blocks, a selection bubble toolbar, full undo/redo
Tables
Structured data that stays editable on the page.
- Insert tables with a dedicated table toolbar
- Drag-resizable columns
- A header row
- Per-cell editing
Images
Pictures that travel inside the file.
- Insert images from your device
- Embedded inline, so they live in the file itself
- Drag to resize
- Per-page background images
Real A4 pages & live pagination
True WYSIWYG pages, not an infinite scroll.
- True A4 (210 by 297mm) pages
- Live pagination with automatic page breaks as you type
- Format pages on demand
- Margin presets: None, Narrow, Normal, Moderate, Wide
Headers, footers & page numbers
Repeat the same furniture on every page.
- Add a header and/or footer pinned to the page edge
- Each with its own margin, padding and background, fully styleable
- They repeat on every page
- Insert "Page X of Y" or just "X" in the header or footer
- Two numbering modes: continuous, or restart per document/section
Multiple documents in one file
Bundle related documents as named sections.
- Keep several documents — e.g. a Contract plus an Appendix — in one file
- Add, rename, delete and jump between sections
- Per-section page numbering
Templates & placeholders
Reusable fill-in documents with guardrails.
- Type {{placeholder}} tokens
- Reserved-token highlighting
- A warning when a placeholder would collide with built-in page-number tokens
- Built for reusable fill-in templates
Edit, preview, print & PDF export
From draft to print-perfect output in one click.
- Toggle between editing and a clean print-preview
- One-click Print / Export to PDF via the browser's native print dialog
- Output resolves backgrounds, headers, footers and page numbers
- Faithful, print-perfect pages
Self-contained .html save format
One portable file, no lock-in.
- Saves ONE self-contained .html file with all styling inlined
- Opens, renders and prints correctly in ANY browser
- Re-opens straight back into the editor
- No proprietary format
Local-first, private & fast UX
Everything stays on your device, and stays quick.
- Runs entirely in your browser; nothing is uploaded; works offline
- Saves back to the same file in place via the File System Access API (Chromium)
- Download/upload fallback in other browsers
- Ctrl/Cmd+S to save, Ctrl/Cmd+O to open
- Unsaved-changes indicator and toast notifications
- Right-click context menus on pages and on headers/footers
Made for
One private editor, many documents
Purpose-built guides for the documents people make most.
Why SlimDoc
Private by design, not as a setting
Your document never leaves your device
SlimDoc runs entirely in your browser. There's no server, no upload, no account. The file you edit stays on your machine, start to finish.
Real pages, real PDFs
You write on true A4 pages with live pagination. What you see is what prints. Export to PDF through the browser's native print dialog, with headers, footers, backgrounds and page numbers resolved.
One file, no lock-in
Everything saves to a single self-contained .html file with styling inlined. It opens and prints in any browser and re-opens straight back into the editor. No proprietary format to trap your work.
Free, offline, no strings
No sign-up, no watermark, no cost. It works offline. Part of the same family as Slimcast — same private, in-browser promise.
FAQ
Questions, answered
Does my document leave my device?
No. SlimDoc runs entirely in your browser. Nothing is uploaded — there's no server and no account. Your document stays on your machine the whole time.
What file format does SlimDoc use?
It saves one self-contained .html file with all styling inlined. There's no proprietary format. That single file opens, renders and prints in any browser, and re-opens straight back into the editor.
How do I get a PDF?
Click Print / Export to PDF. SlimDoc uses your browser's native print dialog, and the output is faithful to the page — backgrounds, headers, footers and page numbers are all resolved.
Does it work offline?
Yes. Because everything runs locally in your browser, SlimDoc works offline. No connection is needed to write, save or export.
How much does it cost?
It's free. No sign-up, no watermark, no paid tier.
Which browsers are supported?
It works in any modern browser. On Chromium browsers it can save back to the same file in place using the File System Access API; other browsers use a download/upload fallback. Saved files open and print correctly in any browser.
How is this different from Google Docs or Word?
SlimDoc is local-first: nothing is uploaded and no account is required. It produces true A4 pages with live pagination and prints to a faithful PDF, and your whole document lives in a single portable .html file rather than a cloud document or a proprietary file.
Can I keep more than one document in a file?
Yes. You can bundle several documents — for example a Contract and an Appendix — as named sections in one file, then add, rename, delete and jump between them, with per-section page numbering.
Start writing — nothing to install, nothing to upload
Open the editor and your first real page is already waiting.