Firefly Lab

@gongshaojie12

Shanghai, People's Republic of China

indie dev shipping small useful web tools & apps. building in public. currently running makelineart, taplup, omniemoji + a plant care app 🌱

OmniEmoji
$0/mo2026 — present
an emoji lab: generate, mash up and edit emojis in your browser
Taplup
2026 — present
free browser games you can play instantly, no download

Recent activity

PostedHelp: could my Gmail tracking extension break privacy or anti-spam law?2026-09-03
Commented onNotebookBloom: What 559 Google impressions taught me about page-two SEO2026-09-03
PostedHow I stopped my own inbox from inflating my open rate — with a hash, not an IP2026-08-27
PostedNotebookBloom: What 559 Google impressions taught me about page-two SEO2026-08-26
PostedNotebookBloom: A 40% store conversion rate can still hide the real bottleneck2026-08-25
PostedEmailKnow:I hold the keys to send email as my users. Here's how I made that as un-scary as I could.2026-08-25
PostedNotebookBloom: Why I stopped treating “installed” as activation2026-08-24
Commented onTwo weeks in public: 19 installs, 21 visitors, and the whole funnel in real numbers2026-08-24
Commented onMy auto-follow-up feature silently did nothing — because the ID it needed didn't exist yet2026-08-24
PostedMy auto-follow-up feature silently did nothing — because the ID it needed didn't exist yet2026-08-21
PostedNotebookBloom: Turn a whole YouTube course into a source you can question2026-08-20
PostedEmailKnow:Apple quietly broke every "read receipt" — here's how I stopped lying about it2026-08-20
Commented onNotebookBloom: A reliability lesson from building on a product with no API — make your failures loud2026-08-20
Commented onEmailKnow: an honest, open-source email tracker (0 users, and here's the whole thing)2026-08-20
PostedNotebookBloom: A reliability lesson from building on a product with no API — make your failures loud2026-08-19
PostedEmailKnow: an honest, open-source email tracker (0 users, and here's the whole thing)2026-08-19
PostedMy VideoObject passed Google's Rich Results Test — with two warnings. Both were one missing timezone.2026-08-18
Commented onWhat one week of SEO actually looks like (real numbers)2026-08-18
PostedMy video was sharp on YouTube but blurry on my own site. The fix was one line of CSS.2026-08-17
PostedTwo weeks in public: 19 installs, 21 visitors, and the whole funnel in real numbers2026-08-16