Harborline Labs

Useful tools for the web

About

Harborline Labs builds small, focused web tools that do one job well. Simple to use, fair to try for free and built in the open. Always open to feedback on what to make next.

Links

436.io

InkGrid

Badges

Gone streaking

Maker History

InkGridQR Codes you can edit after printing
Oct 2026
436.ioSkip the reports. Get the plan.
Sep 2026

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Joined Product HuntSeptember 23rd, 2026

Forums

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14h ago

InkGrid - QR Codes you can edit after printing

Printed QR codes break when a link changes or a free trial ends. InkGrid makes codes you can change after you print them, so menus, posters and business cards stay useful. Static codes are free with no sign-in and never expire. Editable codes show scan counts, and a daily check emails you if a link behind one breaks. Pro adds custom colors and logos, smart rules by device or language, link pages and bulk creation.

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1mo ago

436.io - Skip the reports. Get the plan.

Audit your whole website with PageSpeed Insights, track performance history over time and get one prioritized, strategic report instead of a wall of page scores.