OG Image & Thumbnail Generator
Create 1200×630 social preview images for blogs, X, Kakao, newsletters, and documentation thumbnails from browser templates.
Create a 1200×630 PNG for OpenGraph, Twitter/X, Kakao, and social previews using browser Canvas.
This tool runs in your browser. Inputs stay local and are not sent to any server.
How to use this result
Social cards often decide whether a useful post is noticed. This generator focuses on a standard 1200×630 canvas so the same image works across common OpenGraph, Twitter/X, Kakao, and blog preview contexts.
The tool is meant for fast, repeatable editorial production: pick a template, write a concise title, verify line breaks, then export a PNG without opening a full design application.
Korean text can wrap differently depending on font, length, and punctuation. Always preview the exported layout, especially for mixed Korean-English titles and numbers.
The generator uses browser rendering, so final visual fidelity depends on available fonts and canvas behavior. For brand-critical campaigns, treat the result as a draft and run a manual design review.
Examples
Blog thumbnail
Launch note
Documentation cover
Common questions
Q.Can I upload a logo?
This MVP uses built-in templates. Logo upload can be added later after validating safe image handling and layout controls.
Q.Is 1200×630 always the right size?
It is the common OpenGraph baseline, but some platforms crop differently. Keep important text away from edges.
Q.Are titles sent to the server?
No. The preview and PNG export are generated in the browser.
Before using OG Image
When it helps
OG Image is useful when files, images, and PDFs need format, size, privacy, or sharing checks before they are uploaded elsewhere. It is designed for situations like turning Post title and short summary into OG PNG for a post card without leaving the browser workflow.
Suggested workflow
The basic workflow is simple: enter Title and subtitle, adjust Visual options when needed, and review 1200×630 PNG. Before relying on the result, check the units, date, file type, rounding basis, or other assumptions that may change the outcome.
How to verify results
OG Image is a supporting utility for quick judgment. If the result affects contracts, filings, payments, security, customer data, or other important decisions, verify it against official sources, source systems, internal policy, or qualified review.
Data handling notice
Browser-local processing: the main calculation or conversion runs in your browser.
No server storage: except for UI preferences such as favorites, ZHS does not store your input files or text on the server.
Sensitive-data caution: even with local processing, avoid entering production secrets, national IDs, financial data, or raw customer data into public web tools.