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Show HN: I built a free Open Graph image designer

https://mosaicora.io/tools/og-image-designer
3•d-atanasov•5h ago
I'm working in e-commerce for more than 15 years, and the OG images are still one of the mos neglected parts of a shop. On a few projects, even fairly simple product specific image improved the conversion from shared traffic, which is what originally led me to work on this problem.

The new free tool is a browser based Open Graph image designer. You can choose a template, customize the content, add an image and download the OG image. It works without an account and manually uploaded images stay in the browser.

There is also an optional checker for people who do not want to start from scratch. It can inspect your page and create an initial image proposal from its content, which you can then open and adjust in the designer.

I would appreciate feedback on the templates and any customization options that feel missing and of course improvements. Thanks.

Show HN: I'm a 15 Year Old Wannabe Engineer, This Is a Cycloidal Gearbox I Built

https://github.com/tom-ilan/cycloidal_gearbox
37•tomilan•1h ago•11 comments

Show HN: FirstEmployee.ai – Start a Business

https://firstemployee.ai/
2•nadermx•42m ago•0 comments

Show HN: CostPerPrompt – Live AI API pricing and real-workload cost calculators

https://costperprompt.com/
3•ahmed_hassan7•1h ago•0 comments

Show HN: Legionlinuxtui – Control Lenovo legion laptops in the terminal

https://github.com/nooneknowspeter/legionlinuxtui
9•nooneknowspeter•3d ago•0 comments

Show HN: Elevators

https://john.fun/elevators
1584•Jrh0203•1d ago•387 comments

Show HN: Symbio self fine-tuning AI loop

https://github.com/huyedits/Symbio
7•huyedit•4h ago•2 comments

Show HN: Wage Against the Machine – MacWages Index for AI Tasks

https://watm.ddyo.dev/
6•danr4•4h ago•1 comments

Show HN: Evidence-to-Skill – a gate between untrusted sources and agent skills

https://github.com/Sanexxxx777/evidence-to-skill
3•Aleksandr_NFA•5h ago•0 comments

Show HN: Copy any website pixel perfect

https://github.com/HarKro753/claude-copy
4•Harro123•6h ago•4 comments

Show HN: I made 70K+ hand-drawn icons using AI

https://koboyo.com/icons
3•kamranahmedse•4h ago•2 comments

Show HN: Minimal LLM Post-Training Experiments on an 8GB GPU (SFT, DPO, GRPO)

https://github.com/pochenai/nano-llm-posttraining
20•popopanda•15h ago•0 comments

Show HN: PhaseProbe – Find simulation transitions and turn them into tests

https://github.com/aliengineering-byte/phaseprobe
2•ali110v•4h ago•0 comments

Show HN: What should the GUI for AI agents look like?

https://marbleos.com/demo
131•akbabu•1d ago•77 comments

Show HN: Use iPhone's camera as a lux meter

https://www.impulsearc.com/wavelength/
4•bkazez•4h ago•0 comments

Show HN: Understanding the ReMarkable Coordinate System

https://scrybble.ink/blog/understanding-remarkable-coordinate-system
4•azeirah•5h ago•0 comments

Show HN: Crew, a local collaborative (people and agents) IDE

https://github.com/JamelHammoud/crew
5•jamelhammoud•7h ago•0 comments

Show HN: I built a free Open Graph image designer

https://mosaicora.io/tools/og-image-designer
3•d-atanasov•5h ago•0 comments

Show HN: Pronto – real‑time wire for AI agents (70k+ feeds connected)

https://pronto.stream/
2•MomohNobert•5h ago•0 comments

Show HN: Created a Drink Journal App, Drinqly

https://drinqly.io/welcome
3•haileivera•5h ago•0 comments

Show HN: Gander, an Android file viewer that asks for no permissions

https://github.com/mokshablr/gander
203•mokshablr•1d ago•72 comments

Show HN: Check technical fit for B2B prospects without questionnaires

https://tryscoped.com/demo
2•ininew•6h ago•1 comments

Show HN: A Google Reader like discovery engine for long-form blogs

https://boredreading.com/
2•khet•6h ago•0 comments

Show HN: Lumaris – AI biotech intelligence briefs (sample: EGFR resistance)

https://lumaris.nanocorp.app/reports/egfr-resistance-nsclc-2026
2•lumaris_intel•6h ago•0 comments

Show HN: BitBang – Reach machines behind NAT from a browser, no account

https://github.com/richlegrand/bitbang-cli
90•narragansett•1d ago•37 comments

Show HN: I made a music player inspired by late 90s peer-to-peer sharing

https://jdanwire.jordanscales.com/
3•jordanscales•6h ago•0 comments

Show HN: Kedge – Full-stack cloud with forkable VM snapshots and global SQLite

https://kedge.dev/
136•wgjordan•3d ago•25 comments

Show HN: Distilling DeepSeek into GPT-OSS doesn't transfer censorship. Try it

https://www.ctgt.ai/research/distillation-censorship-transfer
165•cgorlla•2d ago•73 comments

Show HN: Voris: privacy-first analytics for the AI-influenced web

https://voris.ai/
3•wowinter15•7h ago•0 comments

Show HN: Open OneNote Viewer in Rust

https://github.com/emsi/OneNoteViewer
3•emsi•7h ago•0 comments

Show HN: Wienerdog – memory and self-improving skills for Claude Code/Codex

https://github.com/wienerdog-ai/wienerdog/
6•thegyula•13h ago•2 comments