Recommended Image Sizes and Formats – Happeo
Recommended Image Sizes and Formats
This article provides a complete reference for recommended image sizes, formats, and usage guidelines in Happeo, helping you ensure images display correctly and consistently across pages, channels, feeds, and other platform areas.
Overview
Using the correct image sizes and formats helps your organization keep content clear, consistent, and easy to consume across your platform. Properly sized images load faster, display correctly on all devices, and reduce issues like unexpected cropping or blurry visuals.
This article applies to anyone creating or managing visual content in Happeo, including Page editors, Channel owners, content creators, and admins.
Why image consistency matters
Visual consistency reinforces your platform's professionalism and usability. When images display correctly across devices and contexts, your team can focus on the content—not technical distractions. Consistent visuals also help maintain brand alignment and ensure your content looks credible and trustworthy.
Before you begin
You need editing rights to the Channel, Page, or content you are updating.
Images should be prepared in advance using the recommended sizes below.
Unless stated otherwise, Happeo supports JPG/JPEG, PNG, and GIF formats.
General image size guidelines
For most images in Happeo, the recommended maximum length of the longest side is approximately 2560 px, unless otherwise specified.
Images are cropped responsively, so important content should always be centered.
Recommended image sizes by content type
Channel, Page, and content headers
| Context | Recommended size | Notes |
| Channel header | 2560 × 640 px | Landscape (4:1). Minimum responsive size: 1142 × 285 px |
| Page hero header | ~1428 × 400 px | Approximate ratio 3.5:1 |
| Article or Post cover | 2560 × 640 px | Common across articles and posts |
| Pages background image | 2560 × 1920 px | Cropped responsively |
Images inside posts and articles
| Context | Recommended size | Notes |
| Uploaded image | Up to 2560 × 2560 px | No strict aspect ratio |
For most use cases, keep the longest side around 2560 px to balance quality and performance.
Toolbar logo
| Context | Recommended size |
| Toolbar logo (standard) | Max 280 × 80 px |
| Toolbar logo (@2×) | 140 × 40 px uploaded at double resolution |
Feed widgets
| Feed type | Display size | Display behavior | Recommended size |
| News Feed | (Thumbnail display) Visible from 86 × 86 px to 140 × 140 px | Depends on column width | 280 × 280 px (@2×) |
| Blog Feed | Height: 142 px Width: 224–338 px |
Fixed height; width varies by column | 676 × 284 px (@2×) |
| Carousel Feed | — | Fluid/depends on column width | ~720 × 720 px up to 1920 × 720 px (@2×) |
| Banner Feed | — | Fluid/depends on column width | ~720 × 720 px up to 1920 × 720 px (@2×) |
| Discussion Feed | — | Adhere to respective feed limits | — |
| Tiny Feed (deprecated) | — | Not recommended; deprecated | — |
Page widgets
| Widget type | Applies to | Display behavior | Recommended size |
| Image widget | Pages 2.0 | Image scales to widget container | — |
| Banner widget | Legacy Pages | Banner images are shown within a fixed-height banner, and enabling Use only images in the banner displays more of the uploaded image | 5432 × 508 px |
| Banner widget | Pages 2.0 | Image scales to the type of banner selected (e.g. card vs. image-only), and widget configurations | — |
Email branding images
| Context | Recommended size |
| Email header image | 670 × 100 px |
| Email logo | 140 × 26 px |
Images used in emails must be hosted via public URLs.
Custom login page images
| Context | Recommended size | Notes |
| Favicon | Max 64 × 64 px | JPG, PNG, ICO, SVG |
| Login cover image | 460 × 700 px (ideal) | JPG, PNG, GIF |
| Sharper login cover | 920 × 2048 px | JPG, PNG, GIF |
| Login logo | Max height 48 px | JPG, PNG, SVG, GIF |
Page template preview images
| Context | Recommended size | Notes |
| Template preview image | 800 × 600 px | Larger images are cropped |
User profile images
| Image type | Recommended size | Format |
| User header image | 1135 × 200 px | JPG, PNG |
| User profile picture | 720 × 720 px | JPG, PNG |
Custom emojis
| Requirement | Value |
| Size | 20 × 20 px |
| Max file size | 128 KB |
| Supported formats | JPG, PNG, GIF |
| Background | Transparent recommended |
Supported formats and best practices
Choosing the right format
- JPG/JPEG: Best for photographs. Smaller file sizes.
- PNG: Lossless quality. Best for graphics, screenshots, or transparency. Larger file sizes.
- GIF: Supported for simple or animated visuals.
- SVG: Supported for favicons and login logos where specified.
Governance and content quality tips
- Use consistent image sizes across similar content types to reinforce structure.
- Upload images at @2× resolution for sharpness on high-DPI screens.
- Regularly review pages and channels to remove outdated or duplicated visuals.
- Assign clear ownership for pages and channels so image standards are maintained over time.
Summary / Cheat sheet
| Context | Recommended size | Notes |
| Channel Header | 2560 × 640 px | JPG/PNG/GIF |
| Page Hero | ~1428 × 400 px (3:5:1) | JPG/PNG/GIF |
| Article Cover | 2560 × 640 px | JPG/PNG/GIF |
| Post Image | Up to 2560 × 2560 px | JPG/PNG/GIF |
| Pages Background | 2560 × 1920 px | JPG/PNG/GIF |
| News Feed Thumb | 280 × 280 px (@2×) | JPG/PNG/GIF |
| Blog Feed | 676 × 284 px (@2×) | JPG/PNG/GIF |
| Carousel / Banner Feed | ~720 × 720 — 1920 × 720 px | JPG/PNG/GIF |
| Banner Widget (Legacy Pages) | 5432 × 508 px | JPG/PNG/GIF |
| Banner Widget (Pages 2.0) | Scales to selected type of banner | JPG/PNG/GIF |
| Image Widget | Scales to container | JPG/PNG/GIF |
| Email Header | 670 × 100 px | Hosted via public URL |
| Email Logo | 140 × 26 px | Hosted via public URL |
| Login Favicon | 64 × 64 px | JPG/PNG/ICO/SVG |
| Login Cover | 460 × 700 px (ideal) | JPG/PNG/GIF |
| Login Logo | Max 48 px height | JPG/PNG/SVG/GIF |
| Template Preview | 800 × 600 px | JPG/PNG |
| Custom Emoji | 20 × 20 px | JPG/PNG/GIF |
| User Header Picture | 1135 x 200 px | JPG/PNG |
| User Profile Picture | 720 x 720 px | JPG/PNG |
Troubleshooting
My image looks blurry
Upload a higher-resolution image, ideally @2× the display size.
Important content is cropped
Ensure key elements are centered. Happeo crops images responsively.
Images load slowly
Reduce file size and avoid uploading images larger than recommended.
My image isn't showing up in search results
Images themselves aren't indexed, but the content around them is. Ensure your Page or Channel has descriptive titles, summaries, and text to improve discoverability.
I uploaded a custom emoji, but it's not appearing
Check that the file size is under 128 KB and the format is JPG, PNG, or GIF. If the emoji still doesn't appear, contact your admin to verify emoji permissions.