Compatibility Fix for Safe SVG
Fixes a conflict between "Safe SVG" and "Enable Media Replace" when replacing existing media files with SVG uploads.
Solid choice
Compatibility Fix for Safe SVG is a solid plugin choice in 2026, with a few things worth checking first. It runs on 10+ sites and was last updated 2 weeks ago, and scores 66/100 on our health check.
- Actively developed — last update 2 weeks ago
- Tested with the latest WordPress (7.1)
- Small user base (10+ active installs)
- Very few reviews so far
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Compatibility Fix for Safe… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| compatibility | >100 |
| enable-media-replace | >100 |
| mime | #85 |
| safe svg | #14 |
| SVG | >100 |
Version adoption
Share of active sites per release.
About Compatibility Fix for Safe SVG
From the official readme · v1.1.2Description
Problem:
With “Safe SVG” alone, uploading SVG files into the WordPress Media Library works fine. As soon as you try to replace an existing file with an SVG via the “Enable Media Replace” plugin, the operation aborts with the message “Sorry, this file type is not permitted for security reasons.”.
Root cause: EMR calls wp_check_filetype_and_ext() directly from its own submenu (upload.php?page=enable-media-replace/...) without going through the standard upload path (wp_handle_upload). Safe SVG, however, registers its MIME-type fix only on certain admin page hooks — and those do not reliably fire on the EMR replace page in practice.
Solution:
This plugin registers the two required filters (upload_mimes, wp_check_filetype_and_ext) globally so that SVG uploads work through EMR as well.
Safety guard:
So that this plugin does not open an unsanitized SVG upload path, the filters are active only when the “Safe SVG” plugin itself is active. Safe SVG then handles the SVG sanitization on wp_handle_upload_prefilter / wp_handle_sideload_prefilter. Without an active Safe SVG, SVG remains non-uploadable.
Installation
- In the WordPress admin go to Plugins → Add New → Upload Plugin and upload the ZIP file.
- Activate the plugin.
- Make sure that “Safe SVG” and “Enable Media Replace” are also active.
- Replace an existing media item with an SVG file via “Replace media” — it now works.
Frequently asked questions
Do I really need Safe SVG?
Yes. Without Safe SVG the filters of this plugin stay inactive. This is intentional: SVG uploads without a sanitizer would be an XSS risk (embedded JavaScript / SVG smuggling).
Does the plugin also work with other replace plugins?
Yes. The two filters are generic and apply to any plugin that calls wp_check_filetype_and_ext() directly.
Does the plugin also work in WP-CLI / Cron / REST sideloads?
Yes. As of version 1.1.0 the filters no longer perform a capability check, so SVG uploads also work in contexts without a logged-in user (for example programmatic sideloads via REST or WP-CLI). Security is still enforced through the Safe-SVG-active guard and Safe SVG’s sanitization on wp_handle_upload_prefilter.
Is the plugin still needed once EMR is updated and fixes the conflict itself?
No. The plugin can be deactivated and removed without leftovers (no postmeta, no options, no cron).
Changelog
Metadata-only update: Tested up to raised to WordPress 7.1. No functional changes.
1.1.2
- Compatibility:
Tested up toraised to WordPress 7.1. No code changes. - Assets: cosmetic corrections to the banner graphics on WordPress.org.
1.1.1
- Metadata:
Contributorsslug inreadme.txtchanged fromjoerngorrestojgorresto match the WordPress.org user name. No code changes.
1.1.0
- Plugin renamed from “Safe SVG Upload Fix” to “Compatibility Fix for Safe SVG” (slug:
compatibility-fix-for-safe-svg). Reason: the WP.org Plugin Directory does not accept plugin names that start with the name of another plugin; the “for Safe SVG” pattern is explicitly allowed. - Function prefix
ssuf_→compatibility_fix_for_safe_svg_. - Removed the capability check (
current_user_can( 'upload_files' )) from the filter callbacks. As a result SVG uploads now also work in non-user contexts (WP-CLI, Cron, REST sideloads). Security is still guaranteed by the Safe-SVG-active guard and Safe SVG’s sanitizer hook. - Plugin header description translated to English.
- Added a
languages/index.phpstub against direct access. - Translated all
readme.txtsections (Installation, FAQ, Changelog, Upgrade Notice) to English.
1.0.1
- Plugin Check compliance, no functional changes: Short Description and
== Description ==translated to English.
1.0.0
- Initial release.
- Registers the
upload_mimesandwp_check_filetype_and_extfilters globally, gated by an active-Safe-SVG check.
For developers
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FAQ
Compatibility Fix for Safe SVG: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 28, 2026
Is Compatibility Fix for Safe SVG free?
Yes. Compatibility Fix for Safe SVG is free to download and use from the official WordPress.org plugin directory.
Is Compatibility Fix for Safe SVG safe to use in 2026?
Compatibility Fix for Safe SVG is a solid plugin choice in 2026, with a few things worth checking first. It runs on 10+ sites and was last updated 2 weeks ago, and scores 66/100 on our health check.
How many websites use Compatibility Fix for Safe SVG?
Compatibility Fix for Safe SVG is active on 10+ WordPress websites and has been downloaded 315 times since it launched in May 2026. It was downloaded 134 times in the last 30 days.
Does Compatibility Fix for Safe SVG work with WordPress 7.1?
Yes. The developer has tested Compatibility Fix for Safe SVG up to WordPress 7.1.2, the latest release. It requires WordPress 6.5 or newer.
What PHP version does Compatibility Fix for Safe SVG need?
Compatibility Fix for Safe SVG requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Compatibility Fix for Safe SVG last updated?
The latest version, 1.1.2, was released on September 13, 2026 (2 weeks ago).
Who makes Compatibility Fix for Safe SVG?
Compatibility Fix for Safe SVG is developed and maintained by jgorres.
What are the best alternatives to Compatibility Fix for Safe SVG?
The most popular alternatives to Compatibility Fix for Safe SVG are Plugin Compatibility Checker (9K+ installs), Better Plugin Compatibility… (4K+ installs) and Eli's PHP Compatibility Sca… (500+ installs).
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