FlagshipDiffline
- Free
- Landing page
- 5 styles
- WordPress 7.0+
- PHP 7.4+
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Overview
A neo-brutal terminal block theme for developer tools, APIs, CLIs and infrastructure products.
Diffline gives developer tools a home page that reads like a good terminal session: ink lines, hard offset shadows, square corners and a dotted grid paper background, set in IBM Plex Mono and IBM Plex Sans. Light "ink on paper" by default, a phosphor-green dark scheme one click away.
- Install-command hero with a terminal window, a code-and-screenshot split hero, a latest-release hero with a big version chip, an API request/response hero and a docs-style hero with a mini table of contents, plus a background-video hero.
- A changelog-first home: release notes as a git log with change-type chips, the latest release in the status strip above the header, next to uptime and service status.
- SDKs and integrations as cards with filter chips and search, keyboard shortcut tables, usage-based pricing with a monthly/yearly switch, a usage table and a plan comparison.
- Block styles: Terminal (code), Terminal window, Brutal card, Dotted grid paper and Ink band (groups), Shell prompt, Code comment eyebrow and Version chip (paragraphs), Diff (lists), Keyboard shortcuts (tables), Hard shadow frame (images), Hot (buttons). Terminals get a Copy button.
- Built in, no plugins needed: features, integrations, changelog, pricing plans, testimonials and FAQs (Symelo landing foundation), contact, API-access and newsletter forms with a Messages screen, galleries with a lightbox, featured video, reading progress, share buttons, entrance animations and light/dark color schemes (Symelo Theme Kit).
- Style variations: Night (dark by default), Amber (CRT amber on black), Blueprint (white on blue) and Paper (pure black and white).
- Templates for the blog, posts, pages, archives, search, 404, every product post type, and custom templates: Landing page, One-page with section links, Docs page with a contents sidebar and Wide page.
Questions
Where do form messages go?
Every form (contact, API access, newsletter) saves its messages under Messages in the dashboard. A form can also email them: select the form block and set the recipient in its settings. Without a recipient, messages go to the site's administration email.
How do I edit prices, SDKs, release notes or testimonials?
They are content types in the dashboard (Features, Integrations, Changelog, Pricing plans, Testimonials, FAQs). Product name, sign-up links, status and uptime are under Appearance → Product details. Editing the extra fields needs the Secure Custom Fields plugin; without it, everything still shows.
How do I add a featured video?
Open the post's settings and paste a video URL into Featured video. The video replaces the featured image on the post; the image remains the fallback.
Can I turn off the animations?
Visitors who prefer reduced motion get none. To remove an entrance animation from a block, delete its sk-reveal class under Advanced → Additional CSS classes.
How does dark mode work?
The theme follows the visitor's system setting and adds a switch in the header. Night, Amber and Blueprint are dark already, so they hide the switch.
All versions
- 1.0.0WordPress 7.0+ · PHP 7.4+ZIP · 1.9 MB
- First release.
SHA-256
137a8c0ab6e73ad9197b3dfe8fa8cf6f1be10430e3e533c7d7bab64695716f0c
Credits
Diffline WordPress Theme, (C) 2026 Symelo LTD. Diffline is distributed under the terms of the GNU GPL.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.
- IBM Plex Mono and IBM Plex Sans, (C) 2017 IBM Corp. (https://github.com/IBM/plex), SIL Open Font License 1.1 (assets/fonts/*/OFL.txt).
- Symelo Theme Kit (inc/kit) and Symelo landing foundation (inc/foundation), (C) 2026 Symelo LTD, GPLv2 or later.
- Product screenshots in inc/foundation/demo/images (ui-roadmap, ui-roadmap-dark, ui-feedback, ui-insights, ui-mobile): original artwork of the fictional product "Brightloop", (C) 2026 Symelo LTD, GPLv2 or later.
- Photos in inc/foundation/demo/images, assets/images and the video loop in assets/video: Symelo placeholder library (https://symelo.com/tools/placeholder-images), (C) 2026 Symelo LTD, distributed with the theme under the GPLv2 or later. Images: technology-10 (diffline-chip.webp), technology-3 (tech-fiber.webp, diffline-fiber-loop.mp4), abstract-5 (abstract-ink.webp), abstract-1 (abstract-waves.webp), workspace-8 (office-team.webp), architecture-4 (glass-tower.webp).
- Lucide icons (inc/foundation/src/Support/icon-data.php), ISC License, (C) Lucide Icons and Contributors (https://lucide.dev).
- Apple and Google Play logos on the store badges and the share icons of the kit: Simple Icons, CC0 1.0 (https://simpleicons.org).
- screenshot.png: made from the theme's own home page.
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