The default WordPress “shortlink” URLs look like this: <code>http://www.example.com/blog/?p=123</code>, where “<code>123</code>” is actually a 7+ digit decimal number. This plugin shrinks your shortlinks by encoding that number into only 4 characters, and using the abbreviated URL prefix of your choice.
On my site, the default shortlinks are 35 bytes long, even though I have a very short domain name. This plugin shrinks them to 21 total bytes, which is comparable to most public URL-shortener services, and better than many.
E.g., this: <code>http://www.jwz.org/blog/?p=13240780</code> 
becomes: <code>http://jwz.org/b/ygnM</code>
This doesn’t affect your (long) permalinks: those can still be in whatever format you like.

Base64 Shortlinks

This plugin makes your shortlinks shorter!

Surflab

Raiyan Mrf

SurfLink is designed to Search & Replace, Easy Redirection, 404/410 Manager, Link Shortener, Auto Linking, Backup & Restore, Hide Login Url Security.
<h3>Search and Replace</h3>
Safely perform bulk find-and-replace operations directly on the database. 
* Database Management: Supports all tables and handles serialized data (critical for preventing data corruption). 
* Safety First: Includes a “Dry Run” mode to test before applying, case-sensitivity toggles, and specific GUID handling. 
* Title Updater: Update post titles in pages, posts and custom post types. 
* History Logs: View detailed logs of changes with a “View Changes” diff modal (Before vs. After). 
* Easy URL Updater (Pro): A dedicated visual interface to update old domain names or migrate HTTP to HTTPS across contents, attachments, and links. 
* Rerun Operation (Upcoming): Re-run a Search & Replace operation from the History Logs.
<h3>Redirects, 410 & 404s</h3>
A complete suite for managing traffic and broken links. 
* Redirect Manager: Create 301, 302, or 307 redirects. 
* Advanced Rules (Pro): Redirect based on Regex, “Starts With”, “Contains”, “Is 404”, User Agent, or even redirect to Random Posts. 
* Redirect List: View redirects in a nice table. Create, edit, and delete redirects. 
* Dead Link Handling: Monitor 404 logs and easily convert them to Redirects or 410 Gone status (to tell Google a page is permanently deleted). 
* Import/Export: Support for CSV import/export for bulk management.
<h3>Backup and Restore</h3>
Secure your site data with a few clicks. 
* Flexible Backups: Backup the entire database, specific directories (Uploads, Themes, Plugins), or both. 
* Selective Restore: Restore an entire site or just specific components (e.g., restore only the database, keep the themes). 
* Scheduled Auto Backups (Pro): Set it and forget it. Schedule daily or weekly backups to ensure you never lose data. 
* Upload & Restore (Mix): Restore backups from external files easily. Unlimited file size support in premium version. 
* Cross domain Restore: Restore backups from a different domain (e.g., staging, localhost, or a new production domain). 
* Remote Backups (Upcoming): Backup to a remote location (e.g., Google Drive) for long-term storage.
<h3>LoginHider Security</h3>
Protect your site from brute-force attacks. 
* Hide Login URL: Change your default <code>wp-login.php</code> to a custom slug (e.g., <code>/my-secret-entry</code>) and show a nice login form. 
* Options: Configure the custom login slug, max login attempts, and IP ban duration. 
* Limit Attempts: Log failed login attempts and automatically ban IPs after a set threshold. 
* Failed Login Logs: View detailed logs of failed login attempts. 
* IP Unbanning: Easily remove IP addresses from the ban list.
<h3>Module Manager</h3>
<ul>
<li>Module Manager: Enable/disable modules to keep your admin interface clean.</li>
<li>Background Processes: Also enable/disable background processes to optimize performance as needed.</li>
</ul>
* Advanced Options (Upcoming): You can enable/disable a specific sub-module in the Module Manager.
<h3>🟢 Free Features vs 🔴 Pro Features</h3>
<h4>Free Version Includes:</h4>
<ul>
<li>Search & Replace: Standard DB search/replace, Dry Run, History Logs, “View Changes” diff.</li>
<li>Easy Title Updater: Update post titles with a single click in post, page and custom post types. Dry Run, History Logs, “View Changes” diff.</li>
<li>Redirects: Add specific (single/bulk) redirects, 404 Logs, Specific 410 (Gone) status, Import/Export.</li>
<li>Backup: Manual Backup creation, Saved Backup logs, Manual Restore, Selective Restore.</li>
<li>Security: Login Hider settings, Failed login logs, IP Unbanning.</li>
<li>General: Module Manager (enable/disable features).</li>
</ul>
<h4>Pro Version Includes:</h4>
<ul>
<li>Easy URL Updater: Visual interface for URL migration.</li>
<li>Advanced Redirect Rules: Regex, Wildcards, Parameter handling, Random post redirects.</li>
<li>Link Shortener: Create and track branded shortlinks. Make QR codes for them.</li>
<li>Link Report: Dashboard, Link Reports, Domain Reports and Error Reports.</li>
<li>Broken Link Scanner: Scan all posts and terms for broken links.</li>
<li>Auto Linker Beta (Pro): Automatically link selected keywords in your future and present posts, pages, categories, tags, and custom post types.</li>
<li>Soft Linker (Pro): Link selected keywords just before the page is loaded. No hardcoding.</li>
<li>Hard Unlinker Beta (Pro): Automatically unlink posts, pages, categories, tags, and custom post types.</li>
<li>Group Tagging: Create, edit, and delete groups of shortlinks.</li>
<li>Advanced 410: Add 410s automatically from deleted items (trash/delete hooks).</li>
<li>Add Multisite 410: Add multiple 410s at once.</li>
<li>Scheduled Backups: Automated daily/weekly backups to keep your data safe.</li>
<li>Upload large files & Restore: Restore backups from external files with no size limitation.</li>
</ul>
<h3>SurfLink is compatible with these plugins</h3>
You can use these similar type plugins while keeping Surflink installed: PrettyLinks, BetterLinks, Redirection, Better Search Replace, UpdraftPlus, All-in-One WP Migration, Duplicator, BackWPup. 
Surflink will continue working alongside these. If you don’t want a specific module, you can always disable that Surflink module from module manager.

SurfLink – Link Manager & Backup Restore

Search & Replace, 301/302/307 Redirection, 404/410 Manager, Link Shortener, Auto Linking, Backup & Restore, Hide Login Url Security.

Base64 Shortlinks vs SurfLink – Link Manager & Backup Restore