Toggle the functions.php and wp-config.php tweaks you want, copy the block, paste it into your site.
Two visual builders for the WordPress files you touch most: a functions.php snippet picker and a wp-config.php constant picker. Small, specific snippets — read them before you paste them.
Build a functions.php file from common WordPress snippets
Toggle common wp-config.php constants with explanations
5 min read
Every WordPress developer ends up touching the same two files over and over: the child theme's functions.php (or a small custom plugin) and wp-config.php. Those are also the two files where the syntax is hardest to remember off the top of your head — the exact hook name to disable emojis, the exact constant name to bump the memory limit, the right place in wp-config.php to put it.
SnipKit's WordPress builders let you pick the tweaks you want from a list, see the resulting block of code, and copy it in one click. Each snippet is small and specific — one toggle, one job — rather than a do-everything security or performance plugin. You read what you're pasting, you understand what it does, you ship it.
<head>, defer scripts — without typing them out from memory.WP_DEBUG on and off in wp-config.php while debugging a plugin.WP_MEMORY_LIMIT when a site hits the 40M ceiling and white-screens on plugin activation.DISALLOW_FILE_EDIT on a client site so the client can't break their own theme from the WordPress admin.wp_posts table is bloating from 80 drafts of every page.<head>, defer front-end scripts, disable XML-RPC, remove dashicons on the front end, limit post revisions, and disable the theme and plugin file editor. Each toggle is a single, named function — the generated block has a header comment so future-you knows what it was for.WP_DEBUG, DISALLOW_FILE_EDIT, FORCE_SSL_ADMIN, WP_POST_REVISIONS, WP_MEMORY_LIMIT, AUTOSAVE_INTERVAL, DISABLE_WP_CRON, WP_CACHE, FS_METHOD, and WP_AUTO_UPDATE_CORE. Inline comments on each constant explain what it does.The functions.php snippets belong in either a child theme's functions.php or — the better choice — a small custom "site utilities" plugin in wp-content/plugins/. The plugin route survives theme switches, which the functions.php route does not.
The wp-config.php constants go in wp-config.php in the root of your WordPress install, above the line that says /* That's all, stop editing! Happy publishing. */. Anything below that line gets ignored.
Always back up the file before editing. A syntax error in either functions.php or wp-config.php will take the whole site down until the file is fixed via FTP or SSH.
SnipKit's WordPress tools are built around four principles:
<head> — with a header comment so future-you knows what it was for. No giant do-everything mega-plugins.functions.php or wp-config.php code you find online, including ours..htaccess snippet builder (Apache rewrites, security headers, caching rules) alongside the existing functions.php and wp-config.php builders..php plugin file with a proper plugin header.Yes. Every tool on SnipKit is free to use, with no accounts, no trials, and no paywall.
No. SnipKit has no sign-up flow at all. Open the site, use the tool, copy the code.
Yes. Each tool saves your current state to your browser's localStorage so you can come back later or refresh without losing progress. Nothing is sent to a server. Clearing your browser data removes the saved state.
Yes. Anything you generate is yours — no license, no attribution required. Use it in client work, personal projects, or commercial products.
The safest place is a custom "site utilities" plugin — a single PHP file in wp-content/plugins/ that contains your site-specific tweaks. That way the code survives a theme switch. If you'd rather keep it in your theme, a child theme's functions.php works too; never edit the parent theme directly because your changes will be overwritten on the next theme update.
Open wp-config.php in the root of your WordPress install and paste the constants above the line that says "/* That's all, stop editing! Happy publishing. */". Back up the file first — a syntax error in wp-config.php will take the whole site down.
They're not a security audit, and we don't claim they are. Each snippet does one specific thing — for example, removing the WordPress version number from the <head> is a minor obscurity tweak, not a security fix. Read every snippet before you paste it, the same way you should read any WordPress code you find on the internet. If you need a full security review, get one from a specialist.
On their own, no — the snippets are short and well-formed PHP. But a typo introduced while copy-pasting, or a conflict with a badly-written plugin, absolutely can. Always back up functions.php and wp-config.php before editing them.
No. Everything is pure WordPress core PHP. Drop the code in, save, refresh — that's it.