Rich Text Formatting - in Preview Program

The following feature has been added to the Preview Program. Feel free to try out the feature and report issues or possible improvements in this thread.

AppSheet is expanding how text can be formatted. For data that is typed as LongText, app creators can now choose to render Markdown or HTML in Detail views.

Note: In all views other than Detail, the value will render as plain text.

How do app creators use the feature?

  1. Start with data that has HTML or Markdown inputs.

In this example, the Quote column contains HTML data and the Reviews column contains Markdown data.

  1. In the AppSheet editor, go to Data > Columns, expand the desired table, and set the Type field to LongText for the columns that you want to render Markdown or HTML in Detail views.

  1. Click to modify the row, and set the Formatting field to HTML or Markdown (depending on your column data).

  1. Save your application. You should see the rendered text within the Detail view of your app.

How do app users use this feature?

Users can input HTML or Markdown in the appropriate fields.

What are the supported views?

Currently rich-formatted text will only be rendered in Detail views - all other views will display plain text.

What are the supported data types?

The column type must be set to LongText with the format set to HTML or Markdown.

What are the supported HTML tags?

<a>, <b>, <strong>, <i>, <u>, <em>, <mark>, <small>, <del>, <ins>, <sub>, <sup>, <p>, <li>, <ol>, <ul>, <br>, <hr>, <blockquote>, <img>, <h1>,<h2>,<h3>,<h4>,<h5>,<h6>, <table>, <tbody>,<tr>,<td>, <th>

  • Unsupported tags will be rendered as plain text.
  • Allowed attributes:
    for <a>: href, name, and target
    for <img>: src
  • All other attributes will be removed (for example, inline styles such as <p style="color:red;">A red paragraph.</p> will be removed and will not have any effect).

What are the supported Markdown elements?

Heading, bold, italic, blockquote, ordered list, unordered list, inline code, code block, horizontal rule, link and image.

Example: Using a virtual column

  1. Create a virtual column and set its column type to LongText and formatting to HTML.
  2. Edit the App Formula to use the CONCATENATE formula to combine HTML tags with column values.
  3. Save and view your app.

The resulting app:

Please let us know your feedback in this thread!


Would be nice to have an HTMLESCAPE() function to prevent user-input text from hijacking the formatting.


Great stuff! Markdown support will be a huge help. This is a very good companion/addition to the formatting rules we currently use.

It would also be a huge help if the rich text elements could also render in the email and attachment/file templates of an automation task.

When you say views other than Detail and Form will be in plain text, I assume that the tags will be removed? Or do the other views include the tags? (I don’t have time to test it right now :blush:)


In views other than Detail and Form the tags will not be removed, but that could be an enhancement we can look into!

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Definitely. A number of my apps have card views that use an excerpt of a long text field. It’s fine if the rich text is dropped, but having the tags included without an easy way to clean them, either in situ or via a VC, will require additional workarounds.

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That makes NO sense whatsoever.


Ideally, we would want to render the rich text in other views as well.

There are already UI issues for instance in a Table View where LongText is not rendered properly because a row cannot accommodate for multiple lines. So we didn’t want to change it knowing that the field does not need to be enabled Card View, Table View, Deck View or Gallery View.

That being said, Joseph and you are right that we could just remove the tags in views other than Form and Detail in the meantime. We’ll look into it. However, we want to be careful because it could be one of those changes where customers see their apps change (“suddenly it’s not plain text, it has some added formatting to it”) without having done anything. When they don’t want the change, it requires them to scramble and change their app definitions. (I doubt it’ll be the case here, but I have been surprised in the past.)





Honestly, I simply expected that WYSIWYG type of interface will be added for richer text experiences rather than asking for app users to directly type HTML or markdown where majority of appsheet app user are no-code people. This will be leaving appsheet bit more low-code platform rather than no-code services from my point of view.


Hi @Arthur_Rallu

From the announcement, I understood all the atribute will be removed and no effect, but what is going to happen to table tag? the border lines for table will be 0 px thikness or no color ? or any default setting for border line which make table visible?

a img tags are supported, while no attributes are respected. How can we use those two tags where we are not able to push href and src attributes for those tags? Technically, we are not able to produce a hyperlink, nor render image file.


I tried a few things, but it seems that not all attributes are excluded, since href and src are retained.

I would like to see the addition of a WYSIWYG editor function as a user input item, but even at this stage, I think I can expand the expressiveness of the application by using it in Virtual Column.


We just tested by turnig on Preview

I m interested in how the table will be created using table tab. This is how it looks like.

We see the solid border line, but really wish to control the style by using inline styling, which is not currently supported. Hope it will.

The tricky part for this table is the width of table is looking like unlimited. When we push the long text, it is displayed as a single line and keep pushing the table width to fit the length of such strings rather than wrapping text. For us , it is going to make sense that the table tag will have max width style, i.e. 100 pct or 100 vw based on the detail view width rather than pushing the width unlimitedly.


My thinking is that rich text rendering should be done in a Show column, not directly in a LongText column.


Our plan is just to use with virtual column rather than physical.


Yes you’re correct, sorry I should have specified:

for <a>: href, name, and target will not get removed
for <img>: src will not get removed

All other attributes will be removed.

I’ll edit the post above!


AppSheet allows us to specify a Display name and Description for each column. As far as I’m aware, there are two key differences between the options:

  1. Other than form UX views, Display name is the default display option everywhere in the app. In form views, Description takes precedence if it is not blank.
  2. Display name behaves like the Text datatype, Description behaves like longtext (e.g. allows linebreaks).

I just did some testing and, the rich text formatting does not work with the Description field… but it would be awesome if it did.



I admit I have been struggling with understanding ways users would use these new formatting capabilities. I don’t think many end user would even know about the possible tags - let alone expect to be able to manually insert them. At least not in the apps I have been building. Maybe allowing these inline tags are a step towards some type of editing tool coming in the future??

But…as @Jonathon and @Steve have pointed out…allowing this Rich Text in Column Descriptions and in Show columns would be a BIG plus in the look and feel of Text within an app!!


In addition to use CSS for this to control the style, I wish to use tab to let the inline contents horizontally centered with just a center tag alone. Thank you.

Possible useful tag which is currently not in the list could be tag as well

Hi @tsuji_koichi ,

You are correct, this feature is more towards low code.

In my humble opinion, in general, a no-code and low code or even high code could exist together and serve well for all users.

I think that principle is used by many widely used office and work automation platforms. One could use Excel or Gsheet on its own with just simple to complex spreadsheet formulas and also take it to next level with VBA or GAS. Both elementary and advanced users use a spreadsheet as per their needs from simple to- do list to spreadsheet-based inventory management and dashboards and now as a backend database for mobile apps.

Word and PowerPoint have many advanced features such as mail merge/ slide automation and so on that can be optionally used.

There are many website-building platforms that allow a total WYSIWYG website development with options to add HTML/CSS etc. for those who wish to add their own flavor.


I understand rich long text fields can be displayed on detail view only for now but it would be better at least it is also be rendered on dashboard view, as it is quite common that we place detail view within dashboard as a part of elements.

Currently, it is looking like this.