Accessibility prompts for React and Flutter UI reviews

What people miss when they try to make a UI accessible

Most accessibility problems are not “big redesign” issues. They are small details that decide whether someone can use your UI at all.

What usually breaks first is surprisingly consistent. A page can look fine, pass a quick visual check, and still be hard to use with a keyboard or a screen reader.

Here are the first places UIs tend to fail:

• Keyboard access: you cannot reach key controls, or you get trapped in a modal
• Focus order and focus states: focus jumps around, or you cannot see where you are
• Labels and names: inputs and buttons have unclear or missing accessible names
• Announcements: dynamic updates happen but screen readers are not told
• Contrast and clarity: text, icons, and error states are hard to see

The tricky part is how easy it is to regress. A “small” change like swapping a button for an icon, wrapping a card in a gesture handler, or adding a custom dropdown can remove keyboard support, break focus order, or drop a label without anyone noticing.

A common scenario: a React form gets a new “clear” icon inside an input. It looks helpful, but the icon is not focusable, has no name, and steals click events. Now keyboard users cannot activate it, and screen reader users hear an unlabeled control.

This post gives you two things: copyable prompts you can use with your UI code (React and Flutter), and a repeatable review flow you can run in minutes. The goal is not perfection on day one. It is catching the issues that block real users.

If you build product screens but you are not an accessibility specialist, this is for you. It also fits teams using vibe-coding tools like Koder.ai, where UI changes can happen fast and you need quick, consistent checks. If you want a practical starting point, these accessibility prompts for React and Flutter UI reviews are designed to be reused every time you ship UI.

The 5 checks that catch most issues fast

If you only have 15 minutes to review a screen, these checks find the problems that most often block people. They work for both React and Flutter, and they fit nicely into accessibility prompts for React and Flutter UI reviews.

1) Can you use it with only a keyboard?

Try moving through the page without a mouse. Use Tab and Shift+Tab to move, Enter and Space to activate, and arrow keys where a widget looks like a menu, tabs, or a list.

A quick tell: if you get trapped inside a modal, or you cannot reach a key control (like “Close”), something is off.

2) Is the focus order sensible and is focus visible?

As you tab, focus should follow the visual layout (top to bottom, left to right) and never jump to hidden areas. Focus also has to be obvious. If the design uses subtle outlines, confirm they are still visible on light and dark backgrounds.

3) Do controls have clear names?

A screen reader should announce a useful name for every interactive element. “Button” is not enough. Icons need an accessible label, and form fields need a label that stays connected even when placeholders disappear.

4) Are contrast and text size OK?

Check small text, disabled text, and text on colored buttons. Also test zoom: increase font size and ensure the layout does not overlap or cut off key content.

5) Are changes announced clearly?

When something changes (error, loading, success), users should not have to guess. Use inline error text near the field, announce form errors, and make loading states clear.

If you build screens in Koder.ai, ask it to “verify keyboard-only flow, focus order, and screen reader labels for this page,” then review the result using the steps above.

Set up your review scope before you start changing UI

Accessibility work goes faster when you decide what you are reviewing and what “good enough” means before you touch any components. A tight scope also makes accessibility prompts for React and Flutter UI reviews more useful, because the model can focus on real screens and real interactions.

Pick the journeys that matter

Start with 2 to 4 critical user journeys, not the whole product. Good picks are the ones people must finish to get value, and the ones that can lock users out if they fail.

For most apps, that’s something like login, a primary “create or buy” flow (checkout, booking, submit), and one account area like settings or profile.

Then write down the exact screens in each journey (even if it’s only 5 to 8 screens). Include the “in-between” states too: error messages, empty states, loading states, and confirmation dialogs. Those are where focus and screen reader output often break.

A concrete example: if you’re building a small CRM screen in Koder.ai, scope it to “sign in -> open Contacts -> add contact -> save -> see success message.” That single flow touches forms, validation, dialogs, and announcements.

Decide what “pass” means

Keep it practical. Aim for WCAG AA style expectations, but translate that into plain checks you can apply fast: keyboard works end-to-end, focus is visible and logical, names and labels make sense, and contrast is readable.

Use a simple pass/fail note format so you don’t lose time debating. For every screen, capture:

• Check: (keyboard, focus order, labels, contrast, announcements)
• Result: Pass or Fail
• Evidence: one sentence describing what happened
• Fix guess: what likely needs changing (component, prop, styling)
• Retest: what to try after the fix

This keeps the review consistent across React and Flutter, and it makes it easy to hand issues to someone else without re-explaining the problem.

Copyable prompts for React components (keyboard, labels, roles)

When you ask for an accessibility review, the fastest wins come from being specific: what component, what user action, and what “good” looks like. These accessibility prompts for React and Flutter UI reviews work best when you paste the component code plus a short description of what the UI is supposed to do.

If you’re using a chat-based builder like Koder.ai, add the prompt right after you generate a screen or a component so issues get fixed before they spread across the app.

Review this React component for keyboard navigation issues. 
- Can every interactive element be reached with Tab and activated with Enter/Space?
- List the exact problems you see in the code.
- Propose fixes with small code edits.

Check focus order and focus visibility.
- Describe the expected focus order for a keyboard-only user.
- Point out where focus could get lost (modals, menus, drawers).
- Tell me exactly where to add :focus-visible styles (which elements, which CSS).

Find missing accessible names.
- Identify inputs, buttons, and icons without clear labels.
- Suggest label + htmlFor, aria-label, aria-labelledby, or visible text.
- If there is helper/error text, connect it with aria-describedby.

Identify interactive elements that are not buttons/links.
- Find div/span with onClick, custom dropdowns, and clickable cards.
- Suggest correct semantics (button/a) or add role, tabIndex, and keyboard handlers.

List screen reader announcements that will be confusing.
- Predict what a screen reader will announce for key controls.
- Rewrite UI text to be shorter and clearer.
- Suggest aria-live usage for status changes (loading, errors, saved).

Before you send a prompt, include these details so you get usable fixes, not generic advice:

• What the component is (for example: “login form”, “pricing toggle”, “settings modal”).
• The keyboard path users should follow (start point and end point).
• Any UI library used (MUI, Chakra, Radix, custom components).
• States to test (loading, error, disabled, empty results).
• One concrete user goal (for example: “change plan and confirm”).

Copyable prompts for Flutter widgets (Semantics, focus, gestures)

If you want consistent results, paste a widget snippet (or the whole screen) and ask for specific checks. These accessibility prompts for React and Flutter UI reviews work best when you include: the widget tree, how the screen is reached, and any custom gestures.

Prompts you can paste into your review

Review this Flutter widget tree for keyboard navigation and focus traversal.
Call out focus traps, missing focus order, and places where Tab/Shift+Tab will feel confusing.
Suggest exact widget changes (Focus, FocusTraversalGroup, Shortcuts, Actions).

Check this screen for missing Semantics labels, hints, and tap targets.
Point to the exact widgets that need Semantics(label/hint), tooltip, or exclusion.
Also flag controls under 48x48 logical pixels and suggest fixes.

Find custom gestures that break accessibility (GestureDetector/Listener).
Replace them with accessible widgets or add keyboard + semantics support.
If a gesture is required, describe how a keyboard user triggers the same action.

Audit error messages and validation on this form.
What should be announced to a screen reader, and when?
Suggest how to expose errors via Semantics and focus movement after submit.

Propose a consistent focus highlight style across screens.
It should be obvious on dark/light themes and work with keyboard navigation.
Show a small code example using FocusTheme/ThemeData.

Quick fixes the assistant should suggest

Expect answers that mention a few concrete patterns:

• Wrap main content in FocusTraversalGroup and set FocusTraversalOrder only when needed.
• Use Semantics (or MergeSemantics) for composite controls, and avoid duplicate labels.
• Prefer InkWell, IconButton, ListTile, SwitchListTile over raw GestureDetector when possible.
• Add Shortcuts + Actions for non-text inputs (for example, Enter to activate, Escape to close).

A minimal example to make a custom card behave like a button:

Semantics(
  button: true,
  label: 'Add payment method',
  hint: 'Opens the add card screen',
  child: Focus(
    child: InkWell(
      onTap: onPressed,
      child: Card(child: child),
    ),
  ),
)

Step-by-step: a simple keyboard and focus review flow

A fast keyboard and focus review finds problems that also affect screen readers and switch devices. Do it on a real page flow (not a single button), and keep notes as you go so you can re-check the same path later.

The 5-step flow

Start by picking one “happy path” a user would take, like signing in, opening a settings screen, and saving.

1. Do the whole flow with the keyboard only. Put the mouse away. Use Tab and Shift+Tab to move, Enter and Space to activate, and arrow keys where they make sense (menus, radio groups, tabs). If anything requires a click or swipe, mark it.
2. Make sure focus is always obvious. Every time focus moves, you should instantly see where it is. Watch for thin outlines that disappear on dark backgrounds, focus rings removed by CSS, or Flutter widgets that look “active” but do not show focus.
3. Check the order matches what you see. Focus should follow the visual layout and the reading order. Common red flags: jumping to a footer, getting stuck in a sidebar, or skipping a field because it is not focusable.
4. Stress-test overlays. Open menus, dialogs, and drawers. Focus should move into the overlay, stay inside while it is open, and return to a sensible place when it closes. Escape should close the overlay when appropriate.
5. Re-test after each change. Fix one issue, then re-run the same path. Note what improved and what got worse, especially focus order changes and new “dead ends.”

What to record as you go

Keep it simple: page name, what you pressed, what happened, and what you expected. That small log makes it easy to confirm a React refactor or a Flutter widget swap did not quietly break keyboard access.

Screen reader-friendly names, labels, and announcements

Screen readers do not “see” your UI. They rely on names, roles, and short messages that explain what changed. If the name is missing or vague, the app becomes guesswork.

Start with form fields. Every input needs a real label that stays true even when the field is filled. Placeholders are hints, not labels, and they often vanish as soon as the user types.

Icon-only actions are another common miss. A trash icon, a pencil, or a three-dot menu needs a meaningful name that matches the outcome, not the shape. “Delete project” is better than “Button” or “Trash”.

Headings and section labels matter because they become the page outline. Use headings to reflect structure, not styling. A screen reader user will jump by headings to find “Billing” or “Team members”, so those labels should match what the section contains.

Error messages should be specific and actionable. “Invalid input” is not enough. Say what went wrong and what to do next, like “Password must be at least 12 characters” or “Email address is missing the @ sign”.

Copyable review prompts (React and Flutter)

Use these prompts when you review a screen (or when you ask a tool like Koder.ai to update components):

• “Go through this screen and ensure every text input has a visible label, and that the accessible name matches it (React: label + htmlFor, aria-labelledby; Flutter: InputDecoration.labelText).”
• “Find icon-only buttons and give each an accessible name that explains the action (React: aria-label; Flutter: Tooltip or Semantics(label: ...)).”
• “Check headings: use proper heading levels in React, and clear section titles in Flutter so the structure reads correctly.”
• “Rewrite validation errors so they say what happened and how to fix it, and make sure the error is announced when it appears.”

Announcements for dynamic updates

Many screens change without a page reload: saving a profile, adding an item, loading results. Make sure those updates are announced.

For React, prefer an aria-live region (polite for “Saved”, assertive for critical errors). For Flutter, use Semantics and make status messages visible (for example, a banner or SnackBar) so they are read, not just shown. A quick check: trigger “Save”, and confirm you hear a short message like “Changes saved” without moving focus away from the button.

Contrast and visual clarity checks that do not take forever

You can catch most contrast and clarity problems in minutes if you focus on the places people actually struggle: small text, icons, focus rings, and status colors. This is a practical part of accessibility prompts for React and Flutter UI reviews because it is easy to verify and easy to fix.

A 10-minute contrast pass

Start by scanning one screen at 100% zoom and then at 200%. If anything becomes hard to read, it is usually a contrast, weight, or spacing issue, not a “user problem”.

Check these five spots first:

• Body text, captions, and helper text (especially light gray on white)
• Disabled states (disabled should look disabled, but still be readable)
• Icons without labels (a faint icon is effectively invisible for many users)
• Focus indicators (ring/outline should stand out from the background)
• Error and success messages (text and icon, not just color)

A quick rule of thumb: if you need to squint, your users will too. If you are not sure about a color pair, temporarily switch the text to pure black or pure white. If readability jumps, your contrast was too low.

Focus visibility is often missed. Make sure the focus outline is thick enough to notice, and not the same color as the background. If you have a “selected” state in a list, it should look different even in grayscale, for example by adding an icon, underline, or a clear border.

Mobile clarity: targets and themes

On mobile, visual clarity is also about touch. Buttons and icon-only actions should have generous tap targets and spacing so users do not hit the wrong control.

Do a fast theme sweep: toggle dark mode, and if your app supports it, high contrast settings. Re-check text on surfaces, dividers, and focus rings. A common bug is a focus ring that disappears in dark mode or an “inactive” icon that becomes almost the same color as its background.

If you are generating UI quickly in a tool like Koder.ai, add one extra review step: ask for a “contrast and focus ring pass” after the first layout, before polishing visuals.

Common mistakes that keep coming back

Most accessibility bugs repeat because they feel like small UI tweaks, not product behavior. When you run accessibility prompts for React and Flutter UI reviews, watch for these patterns first.

Placeholder text is not a label. A placeholder disappears as soon as someone types, and many screen readers do not treat it as the field name. Use a real visible label (or an explicit accessible name) so the input is understandable when it is empty, filled, and when errors show up.

Focus styles get removed because they “look ugly.” That usually makes keyboard users lost. If you change the default outline, replace it with something equally clear: a strong ring, a background change, and enough contrast against the page.

Another repeat offender is fake buttons. In React it is tempting to use a div with onClick, and in Flutter a Container with a GestureDetector. Without proper semantics, keyboard support and screen readers suffer. Native controls (button, a, TextButton, ElevatedButton) give you focus, role, disabled state, and activation behavior for free.

Dialog and form focus bugs are subtle but painful. After closing a modal or saving a form, focus often jumps to the top of the page or disappears. That happens when focus is not restored to the control that opened the dialog, or when the save action rerenders the screen and drops focus. Users then have to start over to find where they were.

Overusing ARIA (or Flutter Semantics) can also break things. Adding roles and labels everywhere can conflict with what the native element already provides, leading to double announcements or wrong names.

A quick “repeat issues” check you can ask for when reviewing a screen:

• Confirm every input has a persistent label, not just a placeholder
• Confirm every interactive element is a real control with correct role
• Confirm focus is always visible and never removed without a replacement
• Confirm focus returns to the trigger after dialogs, toasts, and saves
• Confirm ARIA/Semantics only adds what native controls cannot

If you generate UI from chat (for example in Koder.ai), include these as acceptance criteria in your prompt so the first draft already avoids the common traps.

Example walk-through: one screen, end-to-end

Imagine a simple Settings screen: a profile form (Name, Email), two toggles (Email notifications, Dark mode), a “Save changes” button, and a toast that appears after saving.

Start with the keyboard. The expected focus order should match the visual order, top to bottom, left to right. Tabbing should never jump into the toast area, the footer, or a hidden menu.

A quick pass that works for most accessibility prompts for React and Flutter UI reviews:

• Press Tab from the top: focus lands on Name, then Email, then Email notifications toggle, then Dark mode toggle, then Save changes.
• Use Shift+Tab to go back and confirm it reverses cleanly.
• On toggles, Space should toggle. Arrow keys should not trap focus.
• On Save changes, Enter should submit, and focus should not disappear after submit.
• When the toast shows, focus should stay where it was unless the toast needs action (like “Undo”).

Now check what a screen reader announces. Each control needs a clear name, role, and state. For example: “Name, text field, required” and “Email notifications, switch, on”. If the Email field has an error, it should be announced when focus enters the field and when the error appears (for example: “Email, text field, invalid, Enter a valid email address”). The Save button should read as “Save changes, button” and be disabled only when you also communicate why.

For contrast, check normal text, placeholder text, and error messages. Also check the focus ring: it must be easy to see against both light and dark backgrounds. Error states should not rely on red alone. Add an icon, clear text, or both.

Turn what you find into a short fix list:

• Fix focus order so it matches the layout.
• Add missing accessible names for toggles and icons.
• Announce errors with the field (not only as a banner).
• Improve focus styles and low-contrast placeholder/error text.
• Make the toast non-blocking, or focusable only when it includes actions.

If you’re building in Koder.ai, paste this screen description and your findings into the chat and ask it to update the React or Flutter UI to match the expected keyboard and screen reader behavior.

Next steps: reuse this checklist and bake it into your workflow

If you want accessibility prompts for React and Flutter UI reviews to pay off long term, treat them like a repeatable habit, not a one-time cleanup. The goal is to run the same small set of checks every time you add a new screen or component.

Keep a single “definition of done” for UI changes. Before anything ships, do a quick pass that covers keyboard, focus, names, and contrast. It takes minutes when you do it often.

Here’s a fast checklist you can run on almost any UI:

• Keyboard: can you reach every interactive element and use it without a mouse?
• Focus: is focus visible, and does it move in a logical order?
• Labels: does every field and button have a clear name (including icons)?
• Announcements: do state changes get announced (errors, loading, success)?
• Contrast: is text readable and are disabled states still understandable?

Save your best prompts as templates. A simple way is to keep one “React review prompt” and one “Flutter review prompt” that you paste at the end of each change request. Then add a short line that describes the new component and any special behavior (modal, stepper, list with infinite scroll).

Re-run the same checks on each new component before release, even if it feels repetitive. Accessibility issues are often introduced by small edits: a new icon-only button, a custom dropdown, a toast message, or a focus trap in a dialog.

If you build with Koder.ai, paste the prompts into the chat and ask for specific fixes, not general improvements. Then use planning mode to review the impact before applying changes. Take a snapshot before the accessibility pass, and use rollback if a fix breaks layout or behavior. That makes it safer to iterate on focus order and semantics without fear.

After your accessibility pass, you can treat it like a release gate: export the source code for your repo workflow, or deploy and host the app and connect a custom domain when you are satisfied with the results.