Slop Press · Beta
Page layout and print design
InDesign, rebuilt for the browser.
Nothing to install: just open it in the browser on your phone, tablet or computer. It keeps working without internet after your first visit. Want an icon on your home screen? On iPhone or iPad, tap Share, then Add to Home Screen. On Android, open the browser menu and tap Add to Home screen. On a computer, click the install icon in the address bar.
Slop Press has these main features: Master pages & threaded text frames; Paragraph & character styles. It opens Any image, PDF, Plain text.
Beta: still being tested, so some parts may change.
What you can do with Slop Press
- Design a business card and get a print-ready PDF
- Make a zine
- Design a flyer to print or share
- A free InDesign alternative in your browser
How Slop Press compares
Slop Press next to Affinity, Scribus, Canva: facts from each tool's own pages, checked 2026-10-24. We make Slop Press.
| Tool | Price | Runs where | Account needed | Print PDF | CMYK | Opens IDML (InDesign) |
|---|---|---|---|---|---|---|
| Slop Press ours | Free | Browser; offline .html | No | PDF with bleed, crop marks and embedded fonts | Yes | No |
| Affinity | Free for individuals | macOS, Windows; iPad in progress | Yes, a free Canva account | PDF/X-1a and PDF/X-4 | Yes, plus spot colours | Yes |
| Scribus | Free, open source (GPL) | Linux, BSD, macOS, Windows | Not stated | PDF/X-1a, PDF/X-3 | Yes, plus spot colours and ICC | Yes (version 1.6) |
| Canva | Free; Pro US$12 a month billed yearly | Browser; Windows and Mac apps | Yes | PDF; crop marks and bleed option | Pro only | Not stated |
| Feature | Slop Press ours | Affinity | Scribus | Canva |
|---|---|---|---|---|
| Master pages | Yes | Yes | Yes | Not stated |
| Threaded text frames | Yes | Yes | Yes | No |
| Paragraph and character styles | Yes | Yes | Yes | Partly |
| CMYK colours | Yes | Yes | Yes | Partly |
| Spot colours | No | Yes | Yes | Not stated |
| PDF/X export | No | Yes | Yes | Not stated |
| Bleed and crop marks | Yes | Yes | Yes | Yes |
| Open IDML (InDesign) | No | Yes | Yes | Not stated |
| Templates | Yes | Yes | Yes | Yes |
| AI tools | Partly | Partly | Not stated | Partly |
| AI assistant that uses the app | Local model or your own key | Not stated | Not stated | Not stated |
| Runs in a browser | Yes | No | No | Yes |
| Desktop app | Works in the browser; offline .html file | macOS, Windows | Linux, macOS, Windows | Windows, Mac |
| No account needed | Yes | No | Not stated | No |
| Open source | Yes | No | Yes | No |
The full comparison, with sources: The best free desktop publishing software
Feature matrix
| Feature | Status | File types |
|---|---|---|
| Master pages & threaded text frames | Beta | Any image, PDF, Plain text |
| Paragraph & character styles | Beta | Any image, PDF, Plain text |
| Print-ready PDF export | Beta | Any image, PDF, Plain text |
| Offline .html | Beta | Any image, PDF, Plain text |
File types
Slop Press opens Any image, PDF, Plain text.
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