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Show HN: I built a JSON viewer that decodes Base64 media inline

https://viewjson.net
3•dassh•2h ago
I built this for myself while debugging multimodal AI APIs.

The problem: I kept running into JSON responses stuffed with Base64-encoded images. Every time, I had to copy the string, find an online decoder, paste, preview. Repeat for each image. It got old fast.

So I made ViewJSON. Paste your JSON, and it automatically detects and renders Base64 media inline: images, audio, video, even PDFs. No more copy-paste decode loops.

Other things it does: - Format/minify JSON - Paste an image, get Base64 string (reverse direction) - Build API requests, copy as cURL - Variable substitution for testing - Share JSON via URL

No login, completely free. Would love feedback on edge cases I might have missed!

Show HN: isometric.nyc – giant isometric pixel art map of NYC

https://cannoneyed.com/isometric-nyc/
20•cannoneyed•25m ago•3 comments

Show HN: Sweep, Open-weights 1.5B model for next-edit autocomplete

https://huggingface.co/sweepai/sweep-next-edit-1.5B
466•williamzeng0•17h ago•90 comments

Show HN: Interactive physics simulations I built while teaching my daughter

https://www.projectlumen.app/
40•anticlickwise•3d ago•4 comments

Show HN: A Node Based Editor for Three.js Shading Language (TSL)

https://www.tsl-graph.xyz/
2•bhushanwtf•12m ago•0 comments

Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)

https://github.com/ChartGPU/ChartGPU
643•huntergemmer•1d ago•201 comments

Show HN: Bible translated using LLMs from source Greek and Hebrew

https://biblexica.com
5•epsteingpt•1h ago•4 comments

Show HN: Rails UI

https://railsui.com/
192•justalever•22h ago•106 comments

Show HN: RatatuiRuby wraps Rust Ratatui as a RubyGem – TUIs with the joy of Ruby

https://www.ratatui-ruby.dev/
147•Kerrick•5d ago•30 comments

Show HN: I built a JSON viewer that decodes Base64 media inline

https://viewjson.net
3•dassh•2h ago•0 comments

Show HN: SkillLens – scan and audit locally installed agent skills

https://skilllens.run
3•morozred•2h ago•0 comments

Show HN: Differentiable Quantum Chemistry

https://github.com/lowdanie/hartree-fock-solver
49•lowdanie•4d ago•14 comments

Show HN: AIIM – Parametric Identity Engine for Consistent NPCs

https://ai-im.tech
2•juliavvrn•3h ago•0 comments

Show HN: yolo-cage – AI coding agents that can't exfiltrate secrets

https://github.com/borenstein/yolo-cage
57•borenstein•1d ago•72 comments

Show HN: High speed graphics rendering research with tinygrad/tinyJIT

https://github.com/quantbagel/gtinygrad
28•quantbagel•13h ago•9 comments

Show HN: A quiet, offline-first reading app for reading books

https://deep-reader-page.vercel.app
2•smallluo•3h ago•0 comments

Show HN: Take a Break – a gentle extension to stop autoplay late at night

https://hardiksondagar.me/take-a-break/
2•hardiksondagar•3h ago•0 comments

Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs

https://github.com/mastra-ai/mastra
211•calcsam•2d ago•69 comments

Show HN: Retain – A unified knowledge base for all your AI coding conversations

https://github.com/BayramAnnakov/retain
42•Bayram•21h ago•14 comments

Show HN: Open-source certificate from GitHub activity

https://certificate.brendonmatos.com
40•brendonmatos•4d ago•9 comments

Show HN: SGR – A Linear-Complexity "Living Cell" Outperforming Transformers

4•MrPan•5h ago•0 comments

Show HN: See the carbon impact of your cloud as you code

https://dashboard.infracost.io/
65•hkh•1d ago•26 comments

Show HN: Dotenv Mask Editor: No more embarrassing screen leaks of your .env

https://marketplace.visualstudio.com/items?itemName=xinbenlv.dotenv-mask-editor
22•xinbenlv•17h ago•23 comments

Show HN: Company hiring trends and insights from job postings

https://jobswithgpt.com/company-profiles/
45•sp1982•23h ago•6 comments

Show HN: Semantic search engine for Studio Ghibli movie

https://ghibli-search.anini.workers.dev/
26•aninibread•1d ago•7 comments

Show HN: Agent Skills Leaderboard

https://skills.sh
133•andrewqu•1d ago•43 comments

Show HN: Hyve – Parallel isolated workspaces for coding agents, multi-repo dev

12•eladkishon•1d ago•1 comments

Show HN: SpeechOS – Wispr Flow-inspired voice input for any web app

https://www.speechos.ai/
12•gangster_dave•1d ago•5 comments

Show HN: Diesel-guard v0.5.0 – Lint Diesel/SQLx Postgres migrations (24 checks)

https://github.com/ayarotsky/diesel-guard/releases/tag/v0.5.0
3•ayarotsky•4h ago•0 comments

Show HN: TopicRadar – Track trending topics across HN, GitHub, ArXiv, and more

https://apify.com/mick-johnson/topic-radar
35•MickolasJae•2d ago•9 comments

Show HN: Skill & MCP server for searching and retrieving 200k+ icons

https://github.com/better-auth/better-icons
2•bekacru•11h ago•0 comments