About Services Portfolio Contact
HREN

We create brands that are remembered

Digital marketing from the heart of a baroque city. Social media, branding, content and strategy that works.

Creative concept for a brand awareness campaign, work by BYVALLUM studio from Varaždin
EST. 2025

About us

Hi! We're BYVALLUM, a creative duo from Varaždin, run by Sandra and Erika. We love good ideas, but we love it even more when there's a clear plan behind them. We approach every brand strategically — from positioning and messaging to visuals and content that actually work.

We develop social media, create visual identities and build branding systems that are consistent, sustainable and recognizable. We don't follow trends just for the sake of trends; we'd rather build solid foundations that deliver long-term results. The name BYVALLUM comes from the Latin word for 'wall' or 'fortress', inspired by Varaždin's Old Castle. That approach is close to us — a brand isn't built in a rush, but layer by layer, with clear structure and purpose behind every element.

We build brands that last. Yours is next.

360°
Marketing approach
24/7
Online presence
100%
Creative focus
VŽ
Creating from Varaždin

Our services

Everything your brand needs to be visible, relevant and recognizable in the digital world.

(01)

Social Media Management

Strategy, content creation and channel management. Instagram, TikTok, Facebook, LinkedIn — all platforms with a content plan tailored to your brand.

(02)

Branding & visual identity

From logo to complete brand book. A visual identity that communicates your values and sets you apart from the competition.

(03)

Paid ads & performance

Meta Ads, Google Ads, TikTok Ads — targeted campaigns that drive conversions. Budget optimization for maximum ROI.

(04)

Content Creation

Photography, video production, graphic design and copywriting. Content that stops the scroll and drives engagement.

(05)

Strategy & consulting

Market, competitor and audience analysis. Digital strategy with clear goals and measurable results.

(06)

Influencer Marketing

We connect brands with the right creators. From micro-influencers to bigger names — authentic collaborations that deliver results.

✕○✕○✕
Your next turn? We're ready to play.
Click to play

Varaždinski DJIR — a city guide by BYVALLUM

Our city guide that reveals the best of Varaždin — restaurants, cafés, hidden spots and local stories. Curated by BYVALLUM.

Let's create
together

Have an idea, project or question? Get in touch — we'd love to grab a coffee and talk about how we can help your brand.

Phone
099 460 2277 Sandra
099 821 7954 Erika
Location
Varaždinska ulica 214, 42209 Sračinec
(near Varaždin), Croatia
Social Media
@byvallum

Your move

You are ✕ — your move
0You
0Draws
0BYVALLUM

Privacy Policy

Data controller

BYVALLUM, a sole proprietorship for marketing, design and consulting, owner Sandra Jozičić, Varaždinska ulica 214, 42209 Sračinec, Croatia. Business ID (OIB): 67048611667. Business registration number (MBO): 99093529. Phone: +385 99 460 2277. E-mail: info@byvallum.hr.

What we collect and why

Through the contact form on this website we collect your name and surname, e-mail address, subject and message. We use them for one purpose only: to answer your enquiry and, if it leads to that, to agree on cooperation. We do not use them for newsletters, profiling or automated decision-making, and we do not sell them to anyone.

Legal basis

Your consent, which you give by ticking the box on the form (Art. 6(1)(a) GDPR), and where the enquiry concerns a possible contract, the steps taken at your request prior to entering into a contract (Art. 6(1)(b) GDPR). You may withdraw consent at any time; this does not affect the lawfulness of processing carried out before the withdrawal.

How long we keep it

Twelve (12) months from our last communication about the enquiry. If cooperation follows, we keep the data for as long as the business relationship lasts and for as long as tax and accounting regulations require. After that we delete it.

Who else has access

This website is hosted by Netlify, Inc. (United States), which also receives and stores contact form submissions on our behalf as a processor. The transfer to the United States is covered by the European Commission's standard contractual clauses and Netlify's participation in the EU–US Data Privacy Framework. We do not pass your data to anyone else, except where we are required to do so by law.

Cookies

This website sets no advertising, analytics or tracking cookies. It only stores two technical entries in your browser's local storage: your language choice and the fact that you have dismissed the notice at the bottom of the page. Fonts are served from our own server, so no data is sent to third parties when the page loads.

Your rights

You have the right of access to your data, and the right to rectification, erasure, restriction of processing, data portability and objection to processing, as well as the right to withdraw consent. Write to info@byvallum.hr and we will respond within 30 days.

Right to lodge a complaint

If you believe we are processing your data unlawfully, you may lodge a complaint with the Croatian Personal Data Protection Agency (AZOP), Selska cesta 136, 10000 Zagreb, azop@azop.hr.

Last updated: 12 August 2026.

Copyright, visual content and editorial note

Content of this website

The texts, logo, visual identity and the work shown in the portfolio are the copyrighted work of BYVALLUM. The portfolio pieces are our own works and concepts, created by hand, without the use of generative artificial intelligence. Copying, publishing or using them without our written permission is not allowed.

Use of artificial intelligence

The illustrations in the Varaždinski đir section were created with the help of generative artificial intelligence tools, based on our own briefs, descriptions and selection. They are not photographs but stylised drawings, and they are not intended to depict any building with documentary accuracy. All texts on this website are written by us.

Buildings shown

The buildings shown in the illustrations are permanently located in public spaces, where depicting them in drawings and other visual works is permitted under Article 91 of the Croatian Copyright and Related Rights Act. We do not publish photographs belonging to third parties on this website. If you believe any content infringes your rights, write to us at info@byvallum.hr and we will respond promptly.

Editorial note

The recommendations in Varaždinski đir are our personal impressions of places we visited ourselves. We have not received any payment, discount, free service or other consideration in exchange for publishing them, and we are not in a business relationship with the venues shown. These posts are not paid advertising or sponsored content. Should that ever change, it will be clearly marked on the post itself.

Accuracy of information

Menus, prices, opening hours and offers change over time. The information in our posts reflects the situation at the time of writing, so please check with the venue before you set off. We accept no liability for any changes made by the venues.

Last updated: 12 August 2026.