Alternative
An online, no-install PosteRazor alternative
All the tile-printing power of PosteRazor, in a modern browser — nothing to download, nothing to learn. Free, private and cross-platform.
PosteRazor is a well-loved open-source desktop app that turns an image into a multi-page PDF ready to print and assemble. It works, but it has not seen a meaningful update in years and requires a download and install on every machine you want to use it from.
Block Poster delivers the same core workflow in a single tab. Drag in an image, pick your paper size and grid, download the PDF. It runs in Chrome, Safari, Edge, Firefox and every mobile browser — no Windows installer, no Linux package, no macOS gatekeeper warning.
For IT-locked-down environments where you cannot install software, library computers or anyone who prefers web tools, Block Poster is a drop-in replacement that is available anywhere you have a browser.
Block Poster vs PosteRazor
| Feature | Block Poster | PosteRazor |
|---|---|---|
| No installation needed | Yes | No |
| Works on Windows, macOS and Linux | Yes | Yes |
| Works on iOS and Android | Yes | No |
| Images stay on your device | Yes | Yes |
| Multi-language interface | 7 languages | Partial |
| Overlap and margin controls | Yes | Yes |
| Actively maintained | Yes | No |
Why choose Block Poster
- 1
Nothing to install
Skip the download, skip the installer, skip the admin-rights fight. Block Poster runs in the browser tab you already have open.
- 2
Same trusted workflow
Upload → tile → PDF. Identical mental model to PosteRazor, with a cleaner interface and a live preview.
- 3
Cross-device by default
Start on your work laptop, finish on your phone, print from the school computer — the tool comes with you, wherever the browser goes.
- 4
Actively improved
Block Poster ships updates regularly — new paper sizes, languages, helper tools and quality-of-life fixes. PosteRazor's last release was years ago.
Try it without installing
Open the tool in a new tab and make your first poster in under a minute. No download, no signup, no watermark.
Open Block PosterPosteRazor vs Block Poster — FAQ
For the vast majority of users, yes. Anything you would do in PosteRazor — choose a paper size, set overlap and margins, print to PDF — Block Poster handles in-browser and usually faster.
It supports A4, A3, US Letter, US Legal and Tabloid, matching or exceeding PosteRazor's built-in defaults. Orientation, margin and overlap are all configurable.
Entirely in your browser. After the page loads, splitting the image, generating the preview and assembling the PDF all happen locally on your device. Your image is never uploaded to a server.
Not today. If scriptability matters to you, PosteRazor or pdfposter are still the right choice. Block Poster targets the interactive workflow — fast and visual.
No. All processing happens in your browser via the Canvas API. Your image is never uploaded, stored or shared.