Developer-First Link Infrastructure That Scales With Your Startup
From tracking which VC partner actually reviewed your DocSend pitch deck to measuring Product Hunt launch referral conversions, UL0 gives tech startups clean branded vanity links, robust REST APIs, and edge-cached redirects that never go down during traffic spikes.
Investor Deck Tracking
Create unique links for angel investors and venture funds. Know the moment a partner opens your deck and track if they share it with partners.
Launch Attribution
Separate traffic from Hacker News, Product Hunt, X, and Reddit. See which launch channels deliver high-activation users vs casual bounces.
Clean REST API
Automate short link creation for transactional notifications, referral programs, or customer invite links with straightforward API keys.
curl -X POST https://ul0.site/api/shorten \
-H "Content-Type: application/json" \
-d '{
"url": "https://yourstartup.com/launch?utm_source=hackernews",
"customSlug": "hn-launch"
}'Startup & Developer FAQ
How can founders track investor engagement on pitch decks using UL0?
By creating a dedicated short link for each investor or VC firm (e.g. ul0.site/sequoia-deck or pitch.yourstartup.com/a16z), you can see exactly when the link was opened, what country and city the partner is in, and whether they revisited the deck.
Does UL0 offer a programmatic REST API for automated link shortening?
Yes. UL0 provides a simple, high-speed REST API that developers can call using cURL, Node.js, Python, or Go to generate short links and retrieve click analytics programmatically.
How does UL0 handle high traffic spikes from Product Hunt or Hacker News launches?
UL0 runs on global edge infrastructure backed by Upstash Redis and distributed CDNs, ensuring sub-25ms redirect response times even during massive viral traffic surges.
Build On High-Reliability Link Infrastructure
Create your custom links or explore API keys for automated programmatic generation.
