Slicejack

What Slicejack does

Slicejack is a privately held, bootstrapped web development services firm operating as Agile company Ltd. from Split, Croatia, founded in 2008 and structured around a 1–10 person team. Its core offering consists of five project-based services targeted at digital and creative design agencies: PSD-to-HTML conversion, custom WordPress development, WooCommerce e-commerce development, PSD-to-email template development, and Conversion Rate Optimization via A/B testing. Underlying technology is a conventional web stack (HTML5, CSS, JavaScript, PHP, MySQL, WordPress, WooCommerce, plus tooling familiarity with Laravel, HubSpot, Marketo, Salesforce, and Optimizely), with delivery positioned as hand-coded and pixel-perfect rather than tool-automated.

The company monetizes through project-based fees structured into four published budget tiers ranging from $1,500 to $10,000+, with enterprise complexity handled above $10,000. Distribution is direct-to-client via a website project planner, supported by content marketing (a technical blog covering WordPress, CSS Grid, JavaScript, A/B testing), a MailChimp newsletter, and active participation in the WordPress community through meetups, WordCamps (Europe 2014, Croatia, Belgrade, Boston 2015), and open-source contributions. Alongside services, Slicejack maintains a portfolio of branded open-source tools (OmniBuilder, Bojler, Formjack, MailPortfolio, Briar, Themejack) hosted on GitHub that function as developer-relations and credibility assets.

The customer base spans at least 20 named logos across design, venture capital, media, telecommunications, real estate, transportation, and nonprofit verticals in North America, the UK, Nordics, Benelux, Australia, and Croatia. Notable repeat relationships include Layertech (six years, multiple projects) and Qikker Online (five projects). Leadership is led by CEO Toni Trivković, with no external institutional investment, parent company, or public-market signals in the input data.

Name

Slicejack

Legal name

Agile company Ltd.

Website

https://slicejack.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

1–10 employees

Short description

Slicejack is a bootstrapped Croatian web development services firm in Split providing PSD-to-HTML, WordPress, WooCommerce, email template, and CRO services on a project basis to digital and creative design agencies worldwide.

Ownership category

akta.pro rank

Headquarters

HQ city

Split

HQ country

Croatia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Web Development Services: Project-based fees for PSD to HTML conversion, WordPress development, WooCommerce development, and email template development services. Clients submit project briefs with defined budgets ranging from $1500 to $10,000+

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Slicejack provides outsourced front-end and WordPress web development services to digital and creative design agencies. Core services include PSD to HTML conversion, custom WordPress theme and site development, WooCommerce e-commerce builds, hand-coded responsive email template development, and conversion rate optimization (A/B testing). The company also maintains a portfolio of open source developer tools (OmniBuilder, Bojler, Formjack, MailPortfolio, Briar email templates, and Themejack WordPress themes).

Product overview

Slicejack is a technical partner for digital agencies providing web development services. The core offering consists of five main services: PSD to HTML Development (converting design files to responsive code), Custom WordPress Development (bespoke WordPress sites), WooCommerce Development (e-commerce solutions), PSD to Email Development (email template creation), and Conversion Rate Optimization (A/B testing services). Alongside these service offerings, the company maintains an open source toolkit including OmniBuilder (WordPress library for Custom Post Types and Meta Boxes), Bojler (email boilerplate), MailPortfolio and Briar (email templates), Formjack (PHP form library), and Themejack (WordPress themes). All products are hosted on GitHub and released under open source licenses.

Differentiator

Problem solved

Functional benefit

Brands

• OmniBuilder: Open source WordPress library for Custom Post Type, Custom Taxonomy, Meta Box and Custom Fields registration.
• Bojler
• MailPortfolio
• Themejack
• Briar E-mail Template
• Formjack

Products and services

• PSD to HTML Development Converts design files (PSD) into high-quality, pixel-perfect HTML/CSS code with cross-browser compatibility and responsive design for tablets, smartphones, and desktop computers, delivered to digital agencies and their end clients.
• Custom WordPress Development Develops bespoke WordPress solutions including company websites, blogs, and e-commerce sites with emphasis on speed, scalability, and security for digital agencies and their clients.
• WooCommerce Development Integrates, customizes, and creates fully functioning e-commerce stores on WordPress using WooCommerce, including theme development, maintenance, and third-party API integrations for digital agencies and their e-commerce clients.
• PSD to Email Development Designs and builds hand-coded, responsive email templates tested across 40+ email clients with software integration for MailChimp, CampaignMonitor, and other marketing platforms for agencies and their clients.
• Conversion Rate Optimization (CRO) Implements and tests multiple variations of landing pages, CTA buttons, forms, and banners using A/B testing methodologies (via Optimizely) to improve conversion rates without requiring website file access, for marketing teams and agencies.
• OmniBuilder Open source WordPress library that simplifies Custom Post Type, Custom Taxonomy, Meta Box, and Custom Fields registration for WordPress developers.
• Bojler Open source email boilerplate and guideline for writing HTML code that renders correctly across popular email clients, helping developers create responsive email templates.
• Formjack PHP library that allows developers to create and validate forms with ease.
• Themejack Man-made WordPress themes offered as part of Slicejack's open source tool portfolio.

Quantifiable outcome

• Fast turnaround - projects completed in 1-3 weeks
• +2 more outcomes

Named customers23 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

One partnership is on record.

• AgilocoreStrategic or Co-development PartnerAgilo is described as Slicejack's sister company. They co-presented at WordCamp Croatia 2015 where Agilo designed the visual identity for the conference.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Huemor: Huemor is a web design and development agency serving B2B brands with conversion-focused websites. Comparable to Slicejack for its B2B website delivery model and CRO emphasis, though typically positioned as the primary creative agency rather than a white-label technical partner.
• Delicious Brains: Delicious Brains builds WordPress plugins and developer tools (e.g., WP Migrate, ACF) that overlap with Slicejack's open source WordPress utility portfolio (OmniBuilder, Bojler, Formjack). Both target the same developer/agency audience with reusable tooling.
• Lounge Lizard: Lounge Lizard is a digital agency offering web design and development, branding, and CRO. It overlaps with Slicejack on front-end and CRO services for mid-market and enterprise clients but with a more design-led brand identity.
• Crocoblock: Crocoblock is a WordPress/WooCommerce product company that builds JetPlugins and development tooling. It is comparable to Slicejack on the WordPress/WooCommerce developer audience, but positioned as a product/subscription business rather than a service partner.

Direct peers

• XWP: XWP is a WordPress engineering and digital experience agency that delivers WordPress platforms for publishers and enterprises. Comparable to Slicejack for its WordPress-centric delivery model and agency/enterprise customer base.
• Human Made: Human Made is a WordPress and open-source engineering agency serving enterprise clients and digital agencies globally. It is directly comparable to Slicejack as a specialist WordPress development partner, but with a larger team and broader enterprise footprint.
• 10up: 10up is a WordPress-focused web engineering agency that builds, optimizes, and maintains WordPress sites for agencies and enterprises. Like Slicejack, it sells deep WordPress expertise as a service line, though it operates at significantly larger scale and with a more enterprise posture.
• WebDevStudios: WebDevStudios is a WordPress and WooCommerce web development agency serving brands and agencies. Directly comparable to Slicejack as a WordPress/WooCommerce specialist with agency-style delivery and similar service lines (custom themes, WooCommerce builds).

Broad incumbents

• WP Engine: WP Engine is a large managed WordPress hosting and digital experience platform that serves agencies and enterprises. It is a broader incumbent that overlaps with Slicejack's WordPress delivery capability but as part of a much wider hosting/platform portfolio.
• WebFX: WebFX is a large full-service digital agency offering web design, development, SEO, and CRO services. Comparable to Slicejack on web development and CRO service lines, but operating as a broad incumbent with much larger scale and integrated marketing services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/slicejack
• GitHubgithub.com/Slicejack
• Facebookfacebook.com/slicejack
• LinkedInlinkedin.com/company/slicejack
• Instagraminstagram.com/slicejack

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Slicejack