BlockPoster.ai
Make a block poster from photos or AI art.
FreeVisual editingOtherImage1 impressionslaunches Oct 271 comment
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>log in to commentEver wanted to turn a single photo into a wall‑sized poster using just your home printer? I built BlockPoster.ai to let you upload, crop, split and preview the layout all in one browser‑based workspace, then download a free basic PDF or an HD version without watermarks. Let me know what works and what could be better 😊
BlockPoster.ai splits images into printable block posters and provides free basic or paid HD PDF downloads.
- for
- DIY makers, educators, home decorators who want large wall art from ordinary paper.
- pricing
- freemium
Key features
- Local processing — Images are decoded, cropped and split in the browser, keeping files private.
- Free basic PDF — Export a single-image PDF up to 5 sheets with a watermark and 150 DPI.
- HD, watermark-free PDFs — Paid downloads support up to 10 sheets, 300 DPI and no watermark.
- AI art generation — Generate artwork from prompts directly in the workspace (credits required).
- Multiple paper sizes — Choose A4, US Letter, A3, Legal or Tabloid in portrait or landscape.
- Assembly guides — Overlap lines, trim marks and page numbers help align and tape sheets.
Use cases
- Create a classroom map display on standard printer paper.
- Print a large landscape photo as wall art for a home office.
- Design a colorful backdrop for a birthday or event celebration.
BlockPoster.ai vs alternatives
 BlockPoster.ai |  Photopea |  Cloudinary |  InvokeAI |  Thumbor | |
|---|---|---|---|---|---|
| Best for | Split images into printable wall-sized posters | General image editing | Programmatic image processing | AI art creation | Server-side image manipulation |
| Pricing | Freemium | Free | Subscription | Free | Free |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Oct 2026 | — | — | — | — |
- BlockPoster.ai vs Photopea: Browser-based Photoshop-like editor without built-in poster splitting
- BlockPoster.ai vs Cloudinary: API for image transformation and delivery, not a UI poster tool
- BlockPoster.ai vs InvokeAI: Open-source AI image generation, no PDF splitting or printing workflow
- BlockPoster.ai vs Thumbor: Smart imaging service for resizing/cropping via API, not a user-facing poster maker
BlockPoster.ai FAQ
Do my photos get uploaded to a server?+
No, all decoding, cropping and splitting happen locally in your browser.
What file formats are supported for upload?+
JPG, PNG and WebP files up to 40 MB.
Can I print without a subscription?+
Yes, the free edition lets you download a basic PDF with a watermark and up to 150 DPI.
How does AI generation work?+
Prompts and any reference images are sent to external AI providers; only generated assets use credits.
What paper sizes can I use?+
A4, US Letter, A3, US Legal and Tabloid, in portrait or landscape orientation.
Is there a batch export option?+
Batch export is available with a paid plan; the free version only exports the first image.
Summarized by DevHunt from blockposter.ai · Oct 24, 2026. Details may change; check the official site.
