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OpenGraph.xyz
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OG:IMAGE
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Bulk Open Graph Tag Generator & Previewer for Indie Hackers

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.
Website, pricing, platforms and company facts side by side.
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| Website | ogbulk.com | diffyn.com |
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| Company | Startup from the Philippines · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


I built OGBulk because I was tired of launching a new side project or SaaS feature, sharing the link on X or in a Discord community, and seeing a broken preview. The image was the wrong size, the description was truncated, or the card didn't show at all. That first impression was dead before...
No description of Diffyn yet.
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing OGBulk and Diffyn.
OGBulk's answer
OGBulk is the only Open Graph tag tool built specifically for indie hackers and makers, combining bulk CSV generation with a real‑time, multi‑platform preview panel that shows exactly how a link will unfurl on Facebook, LinkedIn, X, Discord, iMessage, and WhatsApp — all in one place without sign‑up or clutter.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
OGBulk's answer
Most OG tools handle one URL at a time and focus on generic SEO audiences. OGBulk is designed for the speed and scale makers need: upload a CSV of hundreds of URLs and get consistent, pixel‑perfect tags instantly. It also includes specialised checkers like a 1200×630 px image validator, an X Card debugger, and a character counter — practical extras that prevent broken previews before they go live, all completely free.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
OGBulk's answer
OGBulk is built with HTML, CSS, and JavaScript as a fast single‑page application. A headless Puppeteer instance powers the link‑preview logic, generating accurate platform‑specific unfurls without relying on third‑party APIs.
Diffyn's answer:
React, Next.js, POSTGRESQL
OGBulk's answer
The primary audience is indie hackers, SaaS founders, solo developers, and small maker teams who launch products frequently and need their social share previews to look flawless on every platform without investing time in manual tag debugging.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
OGBulk's answer
OGBulk was born from a personal frustration that every maker knows too well. After launching a new side project and seeing the link preview break across social media — the image wrongly cropped, the description missing — the founder set out to build a dedicated tool that would put an end to embarrassing unfurls and give indie hackers the same quality of social cards as big-budget startups.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
OGBulk's answer
Because OGBulk is a free, no‑sign‑up tool, it does not have named enterprise customers. It is used daily by thousands of indie hackers, Gumroad creators, Product Hunt launchers, and front‑end developers who need reliable bulk OG tags and social previews they can trust.
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