---
canonical: 'https://htmlcsstoimage.com/templates/playground?preset=T6NtiQNY'
title: 'Template Editor: Start with Lineup Reveal Post Instagram Post (Square) Template'
description: 'Customize the Lineup Reveal Post Instagram Post (Square) Template in the HTML/CSS to Image template editor, then save it for API image generation.'
---

# Template Editor: Start with Lineup Reveal Post Instagram Post (Square) Template

Customize the Lineup Reveal Post Instagram Post (Square) Template in the HTML/CSS to Image template editor, then save it for API image generation.

The HTML/CSS to Image API (HCTI) creates images, PDFs, and website screenshots from HTML/CSS, live URLs, or reusable templates. It also supports visual template editing, automated Open Graph images, signed image URLs, batch rendering, direct-to-storage output, and an OAuth-connected MCP server for AI agents.

The template playground is the browser-based visual editor for reusable image templates: configure the canvas, compose blocks, add variables, preview placeholder values, and save the result for rendering through the API.

## What you can do

- Build layouts from text, images, shapes, panels, and other reusable blocks.
- Define variables for content and styling that changes between renders.
- Preview the template with realistic values before saving it.
- Render saved templates through the HTML/CSS to Image API.

## Loaded preset

[Lineup Reveal Post](https://htmlcsstoimage.com/templates/details/lineup-reveal-post/instagram-post-square.md)

## Template details

- **Preset:** Lineup Reveal Post
- **Variation:** Instagram Post (Square)
- **Size:** Instagram Post (Square)
- **Categories:** Creative, Events
- **Types:** Social Post

## Examples

![Lineup Reveal Post preview](<https://content-images.htmlcsstoimage.com/media-assets/58078248ecf42461fb90f5f0af11e7e5b7e296a0cb7bb680f60c6334ccd9a676/example-image-019ef56b-88d7-717b-9288-e8fb9432042f.png?v=auto&iv=2>)

Example variable values:

```json
{
  "date": "Sat 23 Aug",
  "title": "Night Signal",
  "venue": "Warehouse 18",
  "footer": "Doors 8 PM \u00B7 All ages balcony",
  "artist1": "MIRA VOSS",
  "artist2": "THE LOW SUNS",
  "artist3": "PALM STATIC",
  "artist4": "NOON DRIVE",
  "artist5": "DJ RIN",
  "eyebrow": "Full Lineup"
}
```

## Similar templates to try

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- [Gallery Season Poster](https://htmlcsstoimage.com/templates/details/gallery-season-poster.md): Promote a gallery season, exhibition series, or arts calendar with a vertical poster that feels editorial instead of generic.
- [Flash Sale Post](https://htmlcsstoimage.com/templates/details/flash-sale-post.md): A direct sale post for product discounts and limited-time offers.
- [Exhibition Opening Announcement](https://htmlcsstoimage.com/templates/details/exhibition-opening-announcement.md): Promote an art opening, gallery night, studio show, or creative event with a polished announcement built for social sharing.
- [Student Progress Scorecard](https://htmlcsstoimage.com/templates/details/student-progress-scorecard.md): A structured scorecard for progress updates and learning outcomes.
- [Just Listed](https://htmlcsstoimage.com/templates/details/just-listed.md): Share a new listing with a square social graphic that highlights the property photo, price, address, and strongest selling point.

## Get started

- [View the full page](https://htmlcsstoimage.com/templates/playground?preset=T6NtiQNY)
- [Browse templates](https://htmlcsstoimage.com/templates.md)
- [Open the template playground](https://htmlcsstoimage.com/templates/playground.md)
- [Learn how the visual template editor works](https://htmlcsstoimage.com/features/template-editor.md)
- [Read the template API documentation](https://docs.htmlcsstoimage.com/getting-started/templates/)

Rendering or saving a template requires authenticated HTML/CSS to Image API credentials. Keep API keys in trusted server-side configuration. If credentials are not available, ask the user to configure an API key securely, then follow the template API documentation.