Smart 404
Give a visitor useful links when a page is missing.
- Version
- 1.0.9
- Released
- 10 November 2026
- Requires
- Discovery Foundation
- Licence
- Commercial
Price £19.00
Check access and installationCheck your application before checkout
What it solves
The problem
Visitors who follow a missing link on our site reach a dead end.
What your site gets
Our missing-page responses offer visitors links to related public pages.
Questions buyers ask
- Will missing pages still return a 404?
- Frontend and static 404 documents retain their 404 status.
- Do suggestions require JavaScript?
- Similar links and nearby hierarchy are available with or without JavaScript.
- Are unpublished pages included in suggestions?
- Suggestions use public URLs and do not expose unpublished content.
Use it in your project
Suggest similar published pages and nearby sections while keeping the correct 404 response. Visitors can follow the suggestions with or without JavaScript.
Picture it on your site
For a renamed section, try an old URL and review whether the suggested published pages genuinely help the visitor continue. Keep the correct missing-page response and test the ordinary links without JavaScript. Suggestions are a recovery aid, not a replacement for deliberate redirects when the team knows the exact new destination.
3 captures
Help people find your content
- Match missing paths to site-scoped public URLs.
- Keep unpublished pages out of suggestions.
Is this right for your project?
Help a reader complete a task
Start with the phrases and pages a visitor needs, not a dashboard score. Check that published content is discoverable, that its title and description make sense in context, and that the destination answers the question. Search and SEO tooling can support those tasks, but it does not write the content strategy or guarantee a ranking. Your team still decides what deserves to be published.
Check the public result
Use a known published page and an unpublished comparison to test the supported output. Include a moved URL, an alternative language or an empty result where that applies to your project. Review the actual response or generated document, not only the editor settings. Any external search account, index or crawler has its own setup and refresh behaviour to account for.
One customer organisation; up to 5 named users. Each entitlement covers one production website or application and up to two non-production environments, with a maximum of three active installations.
12 months of protected downloads, updates and included standard support.
You may ask Capell for a full refund within 14 days of purchase. Requests are assessed case by case against the recorded order, access and support history. This applies to live paid first-party packages; third-party author sales have separate terms. Read the Refund Policy
Renewal is charged at the price current when you renew. The price is shown before you pay.
Marketplace listings can describe install impact and data access.
This installs as a Composer package. Check its removal guidance and retained-data policy before uninstalling it.
Paid checkout adds access to the purchasing account after payment. Review compatibility and site impact, then follow the installation steps for this package.
This listing has no page of its own in the demo. Open the demo to see Capell running.
Before you install
Review the impact below before running the commands in a covered Capell application, starting with a non-production environment. Required dependencies are listed above.
- Admin and public surfaces
- The package declares: administration screens, frontend integration, command-line operations, public routes. Review the release documentation for configuration and exposure in your application.
- Data and migrations
- The manifest declares no package migrations. This does not establish that installation or runtime operations make no data changes. Uses package-local configuration and Capell metadata needed to enable the feature.
- Background work
- A complete jobs and scheduler assessment is not available here. Confirm background processing and worker requirements with the publisher.
- Access controls
- Access-control changes are not described here. Confirm the required roles and grants with the publisher.
- Removal and retained data
- A verified uninstall and retained-data assessment is not available here. Removing the Composer package does not establish that its data is deleted. Confirm cleanup, retention and dependencies with the publisher before removal.
-
01
Prepare protected Composer access
Sign in to the account with active package access. Open its generated installation instructions and configure the protected Composer repository before running the commands below. Keep access credentials private. Open my package installation instructions
-
02
Require the package
composer require capell-app/smart-404 -
03
Install the extension
php artisan capell:extension-install capell-app/smart-404 -
04
Activate the package licence
In this site’s Admin, open Marketplace, find Smart 404 (capell-app/smart-404), and activate its licence using the purchase licence key if requested. This activates the package you have already installed. Wait for the Marketplace operation to succeed before continuing; keep its queue worker running.
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05
Report the installed package
php artisan capell:marketplace:heartbeat
Release and review evidence
Release activity stays visible
These dates come from approved package releases, so you can see the release trail before installing.
- Latest approved release
- v1.0.9 Nov 10, 2026
- Recent activity
- 14 approved releases in the last 12 months
Review evidence for this release
Smart 404 package reviewed with no defects found; the suggestions endpoint rejects malformed paths, is rate limited, and returns only page titles and public URLs.
Review reduces risk, but it is not a permanent security guarantee.
- Reviewed version
- 1.0.9
- Approval date
- Nov 8, 2026
Areas reviewed
- Strict, maintainable PHP
- Presentation-only public views
- Actions and typed boundaries
- Clean anonymous public output
- Authorisation and input safety
- Declared package boundaries
- Manifest and migration integrity
- Compatibility and interoperability
- Meaningful behavioural tests
- Security and supply-chain checks
- Performance and operational behaviour
- Theme delivery quality where applicable
- Marketplace claims matched to behaviour
- AI-assisted analysis with human accountability
Accepted limitations
- Matching is deterministic rather than semantic, so an unrecognisable mistyped path may return nothing.
Access follows the account that owns the extension. Review the release trail and verification evidence here before installing.
Release notes and maintenance evidence
Version history
Showing the 10 most recent of 14 approved releases-
v1.0.9Nov 10, 2026Full Changelog: https://github.com/capell-app/smart-404/compare/v1.0.8...v1.0.9
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v1.0.8Nov 2, 2026 -
v1.0.7Oct 28, 2026 -
v1.0.6Oct 20, 2026 -
v1.0.5Oct 17, 2026 -
v1.0.4Oct 9, 2026 -
v1.0.3Oct 9, 2026 -
v1.0.2Oct 8, 2026 -
v1.0.1Oct 8, 2026 -
v1.0.0Oct 7, 2026
Before checkout
Know who owns access and what happens next
Payment, customer account ownership, site activation, and package access are separate steps. The checkout reference lets support trace a problem without moving the licence to another account.
Who processes the payment and taxes?
Lemon Squeezy is the seller and hosts paid marketplace checkout. Any VAT due is calculated and added by Lemon Squeezy at checkout, and Lemon Squeezy issues the tax receipt. Capell does not collect card details; it activates the matching marketplace licence after payment is confirmed.
Which account owns the licence?
The signed-in customer account that completes checkout owns the Capell licence, support history, and future install access. Capell surfaces a link to the tax receipt issued by Lemon Squeezy. Use the intended organisation account before paying.
How does the site receive package access?
The install flow connects the licence to the requesting site. Paid and private packages then use authenticated Composer access from the customer account that owns the licence.
What happens if checkout is cancelled or expires?
No licence is created until Lemon Squeezy confirms payment. After a cancellation or expired quote, return to the same marketplace listing and start a fresh checkout so price and package details are recalculated.
How do I request a refund?
There is no self-service refund button. Email [email protected] within 14 days of purchase with the account email, the order or receipt reference, the package and your reason. Capell reviews the recorded purchase and, where approved, submits the refund through Lemon Squeezy. Read the Refund Policy
What should I do if access does not appear?
Keep the checkout reference from the page or receipt and contact support before trying another account. Support can trace the payment, customer account, licence, and connected site from that reference.