Image optimization plugins work directly with uploaded media, generated derivatives, file names, MIME types, and background processing jobs. That makes them useful for performance, but also security-sensitive because unsafe media handling can lead to path manipulation, unauthorized file access, broken public assets, or exposure of media metadata. Image Optimizer – Optimize Images and Convert to WebP or AVIF version 1.7.5 has successfully completed the CleanTalk Plugin Security Certification process and received PSC-2026-64666, confirming that the plugin was reviewed from a secure code perspective with attention to common exploitation paths for image optimization, format conversion, media processing, and upload pipeline behavior.
| Name of | Image Optimizer – Optimize Images and Convert to WebP or AVIF |
| Version | 1.7.5 |
| Active installations | 1,000,000+ |
| Description | Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance. |
| Security | Successfully tested for: SQL Injection (SQLi) Cross-Site Scripting (XSS) – Stored and Reflected Cross-Site Request Forgery (CSRF) Authentication Vulnerabilities Authentication Bypass Exploits Privilege Escalation Buffer Overflow Denial-of-Service (DoS) vectors Data Leakage Vulnerabilities Insecure Dependency Usage Remote Code Execution (RCE) Risks Unauthorized File Access Insufficient Injection Protection Information Disclosure via Misconfigured Endpoints |
| CleanTalk Certification | Proudly earned the “Plugin Security Certification” (PSC) from CleanTalk, indicating adherence to stringent security standards. |
| Additional Information | Use Image Optimizer – Optimize Images and Convert to WebP or AVIF with confidence backed by the “Plugin Security Certification” (PSC). Always verify the latest plugin details and keep WordPress core and dependent components up to date. |
| Plugin Security Certification by CleanTalk |  |
| Logo of the plugin |  |
PSC by CleantalkJoin the community of developers who prioritize security. Highlight your plugin in the WordPress catalog.
Key Features
Image Optimizer – Optimize Images and Convert to WebP or AVIF Image Optimizer helps WordPress sites resize, compress, and convert uploaded images to WebP or AVIF. It supports optimization during upload, bulk processing for existing media, generated derivative files, and administrator controlled settings for compression behavior. These capabilities matter for security because the plugin touches media uploads, image metadata, background jobs, generated files, file system paths, and public image delivery. Secure implementation must validate file types and extensions, keep generated files inside allowed upload locations, protect bulk actions with nonce and capability checks, handle failed jobs safely, and avoid exposing server path details through optimization errors.
Security Assurance
The CleanTalk Plugin Security Certification evaluation focuses on defensive media processing behavior for plugins that modify images and generate alternate formats. For image optimization plugins, common abuse patterns include processing unexpected file types, writing derivatives outside the uploads directory, triggering excessive background work, leaking local file paths, or changing media owned by another user without proper permission. The review validates that optimization workflows are restricted to authorized users, that media validation follows WordPress expectations, and that generated files remain constrained to legitimate media locations. Particular attention is paid to upload handling, conversion queues, bulk optimization actions, media metadata updates, error handling, and the way optimized assets become visible on the public site.
The plugin has been successfully tested for:
✅ Information Leakage Vulnerabilities
✅ SQL Injection Vulnerabilities
✅ Cross-Site Scripting (XSS) Attacks
✅ Cross-Site Request Forgery (CSRF) Attacks
✅ Authentication and Authentication Bypass Vulnerabilities
✅ Privilege Escalation Vulnerabilities
✅ Buffer Overflow Vulnerabilities
✅ Denial-of-Service (DoS) Vulnerabilities
✅ Data Leakage Vulnerabilities
✅ Insecure Dependencies
✅ Code Execution Vulnerabilities
✅ File Unauthorized Access Vulnerabilities
✅ Insufficient Injection Protection
Conclusion
With PSC-2026-64666, Image Optimizer – Optimize Images and Convert to WebP or AVIF version 1.7.5 demonstrates strong baseline security for the workflows that matter most in image optimization plugins: validating media files, protecting bulk optimization actions, constraining generated derivatives, and preserving public asset integrity during conversion. This certification helps site owners improve performance while reducing the risk of unsafe media processing. As a best practice, monitor bulk optimization jobs, keep media permissions limited, and test critical pages after changing image format settings.
Note: The date and certification information may change over time. It is advisable to verify the latest details on the plugin developer’s website.
