Build Traffic & Revenue
with Free Tools + Do‑it‑Yourself Playbooks

Practical tools for Affiliate/Dev/SEO: shorten Shopee/Lazada links with OG, direct Maven JAR downloads, draw PlantUML diagrams, plus step‑by‑step How‑tos.

Start Shortening Affiliate Links → Maven JAR Downloader → Try PlantUML Free →
100% Free Built for Real Use SEO‑Ready

Popular Use‑Cases

Why Dee4u

Outcome‑first, not theory‑dump. We focus on what grows revenue/traffic quickly and measurably.

Short URL Affiliate

Wrap Shopee/Lazada affiliate links, show OG preview, with internal links that boost SEO.

Shorten Shopee · Shorten Lazada Affiliate

Maven JAR Downloader

Search and download JAR by group:artifact:version quickly. Clean UX with SEO‑ready layout.

Maven JAR Downloader

PlantUML Online Free

Draw system/ERD/deployment diagrams instantly with templates and dark mode.

PlantUML Online
SEO Articles Shorten Shopee Shorten Lazada Affiliate Maven Downloader

Popular How‑to

How to shorten Shopee links with OG

  1. Copy the Shopee product URL
  2. Open /S/ and paste URL
  3. Click create; an OG preview card appears
  4. Copy short link into content/ads
Do it now →

Shorten Lazada links for campaigns

  1. Copy Lazada product/collection URL
  2. Open /S/, paste URL, set campaign name
  3. Create; check OG preview
  4. Track clicks in dashboard (if available)
Start now →

Quickly download JAR from Maven

  1. Visit /Maven/ and search group:artifact
  2. Pick the desired version
  3. Download the .jar directly
Try it →

FAQ

Yes. 100% free for the core tools; no sign‑up required.

/S/ is designed to wrap affiliate links cleanly, show OG previews after shortening, and add SEO‑friendly internal links.

Yes—see real examples and how‑tos in the Blog. Open Blog