Firefly Lab

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

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

Recent activity

NotebookBloom: I could have shipped fake-looking page numbers. I didn’t.

Help: could my Gmail tracking extension break privacy or anti-spam law?

NotebookBloom: What 559 Google impressions taught me about page-two SEO

How I stopped my own inbox from inflating my open rate — with a hash, not an IP

NotebookBloom: What 559 Google impressions taught me about page-two SEO

NotebookBloom: A 40% store conversion rate can still hide the real bottleneck

EmailKnow:I hold the keys to send email as my users. Here's how I made that as un-scary as I could.

NotebookBloom: Why I stopped treating “installed” as activation

Two weeks in public: 19 installs, 21 visitors, and the whole funnel in real numbers

My auto-follow-up feature silently did nothing — because the ID it needed didn't exist yet

My auto-follow-up feature silently did nothing — because the ID it needed didn't exist yet

NotebookBloom: Turn a whole YouTube course into a source you can question

EmailKnow:Apple quietly broke every "read receipt" — here's how I stopped lying about it

NotebookBloom: A reliability lesson from building on a product with no API — make your failures loud

EmailKnow: an honest, open-source email tracker (0 users, and here's the whole thing)

NotebookBloom: A reliability lesson from building on a product with no API — make your failures loud

EmailKnow: an honest, open-source email tracker (0 users, and here's the whole thing)

My VideoObject passed Google's Rich Results Test — with two warnings. Both were one missing timezone.

What one week of SEO actually looks like (real numbers)

My video was sharp on YouTube but blurry on my own site. The fix was one line of CSS.