---
canonical: 'https://htmlcsstoimage.com/templates/playground?preset=fb5jpMSm'
title: 'Template Editor: Start with Gallery Season Poster Instagram Post (Vertical) Template'
description: 'Customize the Gallery Season Poster Instagram Post (Vertical) Template in the HTML/CSS to Image template editor, then save it for API image generation.'
---

# Template Editor: Start with Gallery Season Poster Instagram Post (Vertical) Template

Customize the Gallery Season Poster Instagram Post (Vertical) 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

[Gallery Season Poster](https://htmlcsstoimage.com/templates/details/gallery-season-poster/instagram-post-vertical.md)

## Template details

- **Preset:** Gallery Season Poster
- **Variation:** Instagram Post (Vertical)
- **Size:** Instagram Post (Vertical)
- **Categories:** Creative, Events
- **Types:** Announcements

## Examples

![Gallery Season Poster preview](<https://content-images.htmlcsstoimage.com/media-assets/da1b0f4106c7884142c6aa0b63f1ec251091756a4a1de06de3ebd6afda819583/example-image-019ef56d-fcad-719b-9459-a8e8a9cf70a9.png?v=auto&iv=2>)

Example variable values:

```json
{
  "cta": "Opening reception Saturday 6 PM",
  "date": "Aug 2 - Sep 14",
  "title": "New Works in Paper",
  "venue": "Room 204 Gallery",
  "series": "Open Studio"
}
```

## Similar templates to try

- [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.
- [Open House Flyer](https://htmlcsstoimage.com/templates/details/open-house-flyer.md): Promote an open house, broker preview, or property tour with a polished vertical announcement built around time, address, price, and listing highlights.
- [Class Schedule Announcement](https://htmlcsstoimage.com/templates/details/class-schedule-announcement.md): Post a weekly class schedule, studio lineup, training calendar, or signup reminder in a clear vertical format.
- [Event Night Announcement](https://htmlcsstoimage.com/templates/details/event-night-announcement.md): Announce a party, pop-up, live show, launch event, or local gathering with a bold vertical event graphic.
- [Training Webinar Banner](https://htmlcsstoimage.com/templates/details/training-webinar-banner.md): A banner for webinars and live training sessions.
- [Flash Sale Post](https://htmlcsstoimage.com/templates/details/flash-sale-post.md): A direct sale post for product discounts and limited-time offers.

## Get started

- [View the full page](https://htmlcsstoimage.com/templates/playground?preset=fb5jpMSm)
- [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.