Developer & System Engineer
Based in Vietnam
Building practical web tools, mobile apps, and demo sites. Focused on solving real problems with clean, efficient solutions.
Web tools built for everyday use — free, fast, and privacy-focused.
Free online PDF utilities — merge, split, compress, and convert PDFs right in the browser. No uploads, no sign-up.
Visit pdftools-free.comFree online image utilities — resize, compress, convert, and edit images in the browser. Runs entirely client-side.
Visit imagetools-free.comA perspective correction tool available on Gumroad. Fix distorted photos of documents, whiteboards, and more.
View on GumroadPuzzle games for iOS that train your brain and sharpen your math skills.
Combine number and operator cards to hit the target number. A fast-paced math puzzle with synthwave visuals and escalating difficulty.
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Use four numbers and arithmetic operators to make 10. A classic brain-training puzzle with hints, levels, and infinite problems.
Learn moreDesign and development showcases built for various industries.
Personal portfolio demo site showcasing creative web design and modern layout techniques.
View demoKorean-Japanese cosmetics EC landing page — clean layout with product showcases and promotional sections.
View demoLuxury spa booking demo site with elegant design, service menus, and reservation sections.
View demoProduct catalog demo for a Vietnamese trade company — category browsing and product detail pages.
View demoJapanese restaurant demo site with menu display, reservation section, and atmosphere gallery.
View demo